Mighty River Power Capital Markets Day - 2 October 2013 - Amazon AWS

 
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Mighty River Power Capital Markets Day - 2 October 2013 - Amazon AWS
2 October 2013

Mighty River Power
Capital Markets Day
Mighty River Power Capital Markets Day - 2 October 2013 - Amazon AWS
CAPITAL MARKETS DAY

Disclaimer

The information in this presentation has been prepared by Mighty River Power Limited with due care and attention. However,
neither the company nor any of its directors, employees, shareholders nor any other person shall have any liability whatsoever to
any person for any loss (including, without limitation, arising from any fault or negligence) arising from this presentation or any
information supplied in connection with it.

This presentation may contain projections or forward looking statements regarding a variety of items. Such projections or forward
looking statements are based on current expectations, estimates and assumptions and are subject to a number of risks,
uncertainties and assumptions. There is no assurance that results contemplated in any projections and forward looking
statements in this presentation will be realised. Actual results may differ materially from those projected in this presentation. No
person is under any obligation to update this presentation at any time after its release to you or to provide you with further
information about Mighty River Power Limited.

A number of non-GAAP financial measures are used in this presentation. You should not consider any of these in isolation from,
or as a substitute for, the information provided in the audited consolidated financial statements which are available at
www.mightyriver.co.nz.

The information in this presentation is of a general nature and does not constitute financial product advice, investment advice or
any recommendation. Nothing in this presentation constitutes legal, financial, tax or other advice.
Mighty River Power Capital Markets Day - 2 October 2013 - Amazon AWS
CAPITAL MARKETS DAY

Agenda
1.00pm      Introduction and Health & Safety

1.15pm      Operations

2.15pm      Retail

3.00pm      Afternoon tea break

3.30pm      Metrix

3.45pm      Development

4.30pm      Capital Management

5.00pm      Q&A
Mighty River Power Capital Markets Day - 2 October 2013 - Amazon AWS
CAPITAL MARKETS DAY

Our company and the environment we operate in
> Operate in a competitive and well-functioning market that has led to world-best
  outcomes
    >   for security, level of renewables and resilience to future fuel shocks
    >   Consumer benefits now occurring from major investments
> Our portfolio well positioned for demand-supply dynamics
    >   current excess capacity, reflecting flat demand and increased renewable generation
    >   potential for reduction in excess capacity, as more flexible take-or-pay requirements
        lead to further response from fossil fuel generators
> Inherent portfolio advantages mean greater earnings surety under most market
  conditions, including weak Waikato hydro conditions
> Multi-brand retail strategy delivers a tailored customer experience through
  innovation in an intensely-competitive market
> Metrix, our technology business with unique multiple technology platforms,
  provides opportunity for earnings-accretive growth
> Development business continues to position for weak domestic outlook and
  medium term economically-viable growth options offshore
> Focus on sustainable earnings and capital management underway and ongoing
Mighty River Power Capital Markets Day - 2 October 2013 - Amazon AWS
CAPITAL MARKETS DAY

Health & Safety
> Health & Safety focus on ‘zero harm’ is an absolute     TOTAL RECORDED INJURY
  priority                                                FREQUENCY RATE
                                                          2.5
> Critical industry opportunity with common contractors
  and sub-contractors - StayLive generators’ group        2.0
> Company (and other generators) TRIFR well below
  electricity sector averages                             1.5
       > our TRIFR shows 17% improvement y-o-y; and
          59% improvement over past five years            1.0
       > Ngatamariki project TRIFR (involving 1 million
                                                          0.5
          person-hours) of 0.98 vs 3.54 for last major
          project (Nga Awa Purua)
                                                          0.0
> LTIFR at similar levels for the last 5 years                   FY2009    FY2010    FY2011     FY2012     FY2013

> Significant and on-going effort into Health & Safety
  processes, specific focus to improve critical risk       LOST TIME INJURY FREQUENCY RATE
  identification, including systems and culture            (EMPLOYEES AND ON-SITE
                                                           CONTRACTORS)
> Sentenced for ‘near-miss’ incident in September 2013     0.6
      > $32,000 for drilling contractor; $16,000 for
                                                           0.5
        Mighty River Power as principal for failing to
        take all practicable steps                         0.4
      > Judge referenced one-off nature of incident and    0.3
        Company’s good safety record and robust safety     0.2
        processes
                                                           0.1
      > early guilty plea from the Company; focus on
        capturing learnings and implementing               0.0
        improvements in future risk identification                FY2009    FY2010     FY2011     FY2012     FY2013
Mighty River Power Capital Markets Day - 2 October 2013 - Amazon AWS
Operations
Capital Markets Day

Presented by:
Fraser Whineray       Phil Gibson
General Manager       Wholesale Markets Manager
Operations
Mighty River Power Capital Markets Day - 2 October 2013 - Amazon AWS
OPERATIONS

Operations
Operations is responsible for:
> Managing the generation of electricity to be sold on the wholesale market and to certain large
  commercial customers
> Managing wholesale electricity value and risk position through a range of levers
> Operation and maintenance of power stations and upstream fuels
Mighty River Power Capital Markets Day - 2 October 2013 - Amazon AWS
OPERATIONS

Market Structure
Mighty River Power Capital Markets Day - 2 October 2013 - Amazon AWS
OPERATIONS

Wholesale/portfolio decisions and governance

                                     Governance – Management/Board

     SHORT‐TERM                                      MEDIUM‐TERM                           LONG ‐TERM
 Cover risk and achieve                          Optimise sales book and              Future earnings growth
   best value for fuel                                fuel choices                    and asset management
             Pricing                                         Pricing                              Pricing
        Competitors                                     Competitors                          Competitors
   Dispatch Optimisation
                                                    Portfolio net position              Portfolio net position
          Fuel Value
                                                      Outage Planning                    Asset Management
    Outage scheduling
        Transmission                                     Plant Mode                            New Plant

               Fuel                                           Fuel                                  Fuel

                                                                                          Decisions made in conjunction with
     Decisions made in conjunction with retail         Decisions made by Operations
                                                                                          Development
Mighty River Power Capital Markets Day - 2 October 2013 - Amazon AWS
OPERATIONS

 Demand and supply
 > Excluding industrial, demand flat over last six years
               > deindustrialisation trend seen since 2003
 > Meridian Tiwai negotiations more positive than expected
               > 170MW step down in Meridian contract volume in 2015
               > provides clear signal and time for thermal response, including others contracting with Tiwai
 > Thermal units in New Zealand are large relative to the total market
               > 170MW step-down equivalent to a 15% reduction by the three CCGTs

       NATIONAL CONSUMPTION

      45,000
      40,000                                                                                                                                                                                                                                                                                                                          Thermal Generation
      35,000                                                                                                                                                                                                                                                                                                                          for FY2013
GWh

      30,000
      25,000
      20,000
                03 1998
                          09 1998
                                    03 1999
                                              09 1999
                                                        03 2000
                                                                  09 2000
                                                                            03 2001
                                                                                      09 2001
                                                                                                03 2002
                                                                                                          09 2002
                                                                                                                    03 2003
                                                                                                                              09 2003
                                                                                                                                        03 2004
                                                                                                                                                  09 2004
                                                                                                                                                            03 2005
                                                                                                                                                                      09 2005
                                                                                                                                                                                03 2006
                                                                                                                                                                                          09 2006
                                                                                                                                                                                                    03 2007
                                                                                                                                                                                                              09 2007
                                                                                                                                                                                                                        03 2008
                                                                                                                                                                                                                                  09 2008
                                                                                                                                                                                                                                            03 2009
                                                                                                                                                                                                                                                      09 2009
                                                                                                                                                                                                                                                                03 2010
                                                                                                                                                                                                                                                                          09 2010
                                                                                                                                                                                                                                                                                    03 2011
                                                                                                                                                                                                                                                                                              09 2011
                                                                                                                                                                                                                                                                                                        03 2012
                                                                                                                                                                                                                                                                                                                  09 2012
                                                                                                                                                                                                                                                                                                                            03 2013
               National Consumption Rolling 12 months

               National Consumption Excl. Tiwai Rolling 12 months

               National Consumption Excl. all Direct Connect Rolling 12 months
OPERATIONS

          Thermal utilisation reducing
              > Record level of thermal surplus due to combination of:
                       > long lead time generation build pipelines
                       > sustained period of flat to declining demand growth
              > Introduction of non-discretionary renewables (geothermal and wind) has led to displacement of
                base-load thermals
              > Thermal generators’ response constrained by fuel commitments

               THERMAL UTILISATION AND CAPACITY, AND GEOTHERMAL CAPACITY

              100%                                                                                                                         25,000

                                                                                                                                                    Thermal and Geothermal Capacities
               80%                                                                                                                         20,000
Utilisation

               60%                                                                                                                         15,000

               40%                                                                                                                         10,000

                                                                                                                                                                 (GWh)
               20%                                                                                                                         5,000

                0%                                                                                                                         ‐
                          2003        2004         2005        2006         2007        2008        2009      2010   2011     2012
                                 Diesel Capacity               Coal Capacity                  Gas Capacity           Geothermal Capacity
                                 Southdown                     Otahuhu                        TCC                    Huntly Main
                                 Huntly 6                      Whirinaki                      e3p
               Note: in the above graph thermal capacity is stacked and the geothermal capacity is overlaid
OPERATIONS

   Thermal response underway
       > Contact
                               > Investment in Ahuroa gas storage facility allows reduced take-or-pay quantities and converts gas supply from base
                                 load to peaking/firming
                               > Signal to mothball Taranaki CCGT (TCC) from start of 2014 to defer maintenance capex
                               > Considering disconnection of OTA steam turbine and conversion to OCGT
       > Genesis
                               > Recently announced the second of its units going into storage before the end of 2013
                               > Only two Huntly 250MW units available from 2014 – expect very low utilisation
       > Mighty River Power
                               > Converted Southdown from base-load to peaking mode from 2003
                               > Gas supply arrangements reducing during 2014. No gas contracted from 2016
                               > Earnings from ACOT over winter – offset gas transmission costs

                         WINTER SECURITY MARGIN ASSESSMENT
                                                                                                             Basecase
                         40%
                                                                                                             No new thermal + decommissioning of one CCGT
Energy Security Margin

                                                                                                             High Demand
                         30%

                         20%

                         10%

                         0%
                                    2012

                                                 2013

                                                              2014

                                                                           2015

                                                                                        2016

                                                                                                      2017

                                                                                                                   2018

                                                                                                                                  2019

                                                                                                                                                2020
   Source: System Operator, Transpower
OPERATIONS

                        What does it all mean for wholesale prices?
                        >    Future wholesale market price outcomes heavily dependent on key drivers of supply and demand
                        >    Futures curves and independent forecasts consistently low for some time
                        >    Market expects some increase over time to wholesale and futures prices
                        >    Current commercial prices would not cover fuel and variable operating cost of thermals
                        >    ASX CAL14 saw $3 lift in response to Contact TCC announcement in August 2013

                        THIRD PARTY WHOLESALE ELECTRICITY PRICE                                   ASX FUTURES SETTLEMENT PRICE (OTA)
                        FORECASTS
                   120                                                                            90
                   110                                                                            80
                   100                                                                            70
Nominal Price ($/MWh)

                        90                                                                        60
                        80                                                                        50

                                                                                         $/ MWh
                        70                                                                        40
                        60                                                                        30
                        50                                                                        20
                        40                                                                        10
                             FY14

                                      FY15

                                                FY16

                                                         FY17

                                                                   FY18

                                                                           FY19

                                                                                  FY20

                                                                                                   0
                                                                                                                FY2014              FY2015
                                    Credit Suisse      Deutsche Bank      FNZC
                                    Goldman Sachs      Macquarie          UBS                      As at 30 June 2012    As at 5 April 2013 (date of PFI)
                                                                                                   As at 30 June 2013    As at 26 September 2013
OPERATIONS

Mighty River Power portfolio dynamics
                                                          AVERAGE WHOLESALE PRICE (WKM)
> Traditionally run ‘short’ on an annual
                                                          90
  energy basis
                                                          80
       > mean Waikato hydrology and
                                                          70
         Southdown at circa 30% load
                                                          60
       > risk managed with additional thermal

                                                  $/MWh
         utilisation and contracts                        50
                                                          40
> Portfolio risk assessed by internal VaR
                                                          30
  model against risk appetite
                                                          20
> Actual short position has range driven by               10
  high/low inflow scenarios to Waikato                    0
  Hydro and wholesale prices                                       FY2009    FY2010       FY2011     FY2012   FY2013
> Mixture of sales channels to residential,
                                                      SALES PORTFOLIO
  commercial and industrial customers
                                                      Industrial       Commercial      Residential
  nationwide - spreads exposure to location
  risk and portfolio decay/price risk                 8,000
                                                      7,000
> Current commercial contracts market
                                                      6,000
  clearing at low/negative margins for risk
                                                      5,000
                                                GWh

                                                      4,000
                                                      3,000
                                                      2,000
                                                      1,000
                                                           0
                                                                   FY2009     FY2010      FY2011     FY2012   FY2013
OPERATIONS

CFD and ASX
                                                                          INDUSTRIAL CFD SALES
> Industrial Sales CFDs                                                                                                      Other Industrial Sales

                                                                                                                             Kawerau Contract
           > Fixed Price Fixed Volume contract, typical in
                                                                      2,500
             Industrial sales channel
                                                                      2,000
           > buyer takes some volume risk compared to                 1,500

                                                                GWh
             FPVV contracts, CFDs normally priced                     1,000
             accordingly                                                500
                                                                          0
           > 30% of total sales and 75% of net CFDs                                  FY2009     FY2010    FY2011    FY2012       FY2013

> Inter-generator CFDs
                                                                              NET INTER-GENERATOR CFD*
           > generators use CFDs to manage fuel, plant and
             transmission outages                                        3,000
                                                                         2,000
           > ASX and broker markets provide useful
             reference for OTC markets                                   1,000

                                                                  GWh
           > 15% of net CFDs                                                    0
                                                                        -1,000
> ASX futures market
                                                                        -2,000
           > exchange traded market for quarterly futures                              FY2009    FY2010    FY2011   FY2012        FY2013
             contracts                                                                          Buy CFD      Sell CFDs
           > Mighty River Power participates as a Market                      ASX CFD
             Maker                                                            600
           > useful alternative for hedging inter-island risk                 400
           > 10% of net CFDs                                                  200
                                                                        GWh

                                                                                0                                                               Location
                                                                                                                                                Hedging
                                                                              -200

*Includes VAS on both buy and sell side CFDs
                                                                              -400
                                                                                       FY2009    FY2010   FY2011    FY2012      FY2013
OPERATIONS

                                 How is our portfolio placed to respond to short-term market conditions?
                                 > Base-load geothermal and all-year -round rain-fed Waikato hydro delivers reliable generation compared to other renewable
                                   portfolios
                                 > South Island hydrology is negatively correlated to wholesale price. Taupo inflows are typically not correlated which limits
                                   downside variability but has the opportunity for upside
                                 > Flexible gas generation delivers peaking capacity and hydro firming for dry year risk mitigation (~1000GWh of potential
                                   Southdown)
                                 > All generation located in the central North Island in close proximately to growing parts of the economy – less basis risk

                                TAUPO AND SI STORAGE PERCENTAGES AND MEANS
                                100%

                                 90%
Storage Percentage of Average

                                 80%

                                 70%

                                 60%

                                 50%

                                 40%                                                                                           North/South # of QTRs
                                 30%
                                                                                                                               Wet/Wet            11
                                                                                                                               Wet/Dry             4
                                 20%                                                                                           Dry/Wet             5
                                 10%                                                                                           Dry/Dry             1
                                                         Dry/Dry              Taupo storage %                     SI Storage %                 Mean Taupo Storage %                     Mean SI Storage %              80% Mean SI Storage %
                                 0%
                                                                    Apr-09

                                                                                                         Apr-10

                                                                                                                                                   Apr-11

                                                                                                                                                                                            Apr-12

                                                                                                                                                                                                                                Apr-13
                                       Jul-08

                                                                             Jul-09

                                                                                                                      Jul-10

                                                                                                                                                            Jul-11

                                                                                                                                                                                                     Jul-12

                                                                                                                                                                                                                                         Jul-13
                                                Oct-08

                                                           Jan-09

                                                                                      Oct-09

                                                                                                Jan-10

                                                                                                                                 Oct-10

                                                                                                                                          Jan-11

                                                                                                                                                                      Oct-11

                                                                                                                                                                               Jan-12

                                                                                                                                                                                                              Oct-12

                                                                                                                                                                                                                       Jan-13

                                                                                                                                                                                                                                                  Oct-13
OPERATIONS

Risk Management Processes
                                           Board

                                                                                           Market and Credit Risk Management Policy
                        Risk Assurance and Audit Committee

                      Executive Risk Management Committee

                                                                    BACK OFFICE
      FRONT OFFICE                    MIDDLE OFFICE
                                                                    Administration of
Customer and competitor facing   Position, Credit and Exposure   transactions/cash flows
         transactions                        Control

                                         Transaction
    External relationships                                           Reconciliation
                                        Confirmation

     Competitor Insight             Counterparty Credit               Settlement

                                       Accessed Credit
       Market Insight                                             Debt Management
                                          Exposure

    Offer and Acceptance             Policy Compliance              EA Notification
MARKET DYNAMICS

Market regulation
> Energy prices for end consumers set by deregulated, competitive market forces
      > Deregulated wholesale market based on supply and demand established in 1990s, with full retail
        competition from 1998
      > Transmission and distribution considered monopoly assets – ownership separation from generation or
        retailing businesses and separately regulated
> Independent Regulatory Agencies
      > Commerce Commission – competition law and determination of returns for regulated asset base
      > Electricity Authority (EA) is primary regulator of electricity markets - promotes competition in, reliable supply
        by, and the efficient operation of, the electricity industry for the long-term benefit of consumers
> Framework has been settled since 1999 after a period of significant reform in mid to late 1990s
OPERATIONS

A well functioning market
> Current market structure has led to highly competitive market which has resulted in world-leading
  outcomes:
        > 1,200MW renewable investment over last 10 years displacing fossil fuel
        > best generation projects brought to market first
        > security of supply highest for two decades
        > retail churn around 20% (second only to Victoria, Australia)
> Initiatives have seen further improvements in wholesale markets
        > transmission investment approvals/commisioning
        > increased liquidity and price certainty
> Retail markets can benefit from investment in wholesale market
> Electricity Authority survey (February 2013) stated “prices in [this] market reflect the outcomes
  expected in a workable market”
   EA MARKET PERCEPTIONS SURVEY
                                                                             Instantaneous    Frequency
            Retail             OTC              Futures           Spot          reserves       keeping

 2013

 2011

 Source: UMR research                                                              negative   positive
OPERATIONS

Transmission Pricing Review
> The EA announced a new Transmission Pricing Mechanism (TPM) in October 2012 for
  consultation with proposed implementation in 2015
> The proposal was extremely complex, applied to all transmission (not just HVDC) and was
  retrospective in nature
> Initial consultation attracted strong negative feedback by wide-cross section of submitters
> EA has delayed proposed implementation date by one year and intends to release a further series
  of consultation papers on key elements of the proposal in FY2014
> Ability to recover generator charges key to any new proposal
> Any decrease in Tiwai demand would change reallocation/beneficiaries
OPERATIONS

Transmission Pricing Review
OPERATIONS

Transmission
> Core infrastructure for electricity markets            RELATIVE WHOLESALE PRICE – OTAHUHU
                                                         TO BENMORE
> Underpin national competition for customers
                                                                                             5                                                          Bi-pole outages
Transmission upgrades
                                                                                             4                                                    HVDC Commissioned
> Transpower $3.5 billion programme expected to

                                                                           Location factor
  complete in March 2014                                                                     3

> North Island Grid Upgrade Programme                                                        2
  (NIGUP) providing improved security of supply                                              1
  commissioned in October
                                                                                             0
> Wairakei Ring providing increased transfer

                                                                                                                   Aug
                                                                                                                         Sep
                                                                                                                               Oct

                                                                                                                                                             Apr

                                                                                                                                                                                     Aug
                                                                                                                                                                                           Sep
                                                                                                 May

                                                                                                             Jul

                                                                                                                                     Nov
                                                                                                                                           Dec

                                                                                                                                                                   May

                                                                                                                                                                               Jul
                                                                                                       Jun

                                                                                                                                                 Jan
                                                                                                                                                       Feb
                                                                                                                                                       Mar

                                                                                                                                                                         Jun
  through central North Island
> High Voltage Direct Current (HVDC) Pole 3                RELATIVE WHOLESALE PRICE – OTAHUHU
                                                           TO WHAKAMARU
      > HVDC Pole 2 control systems commissioning
        underway                                                             1.18
                                                                             1.16
      > lower opportunity for price separation between                                                                                                 NIGUP Commissioned
                                                                             1.14
        North and South Islands
                                                         Location factor     1.12
      > increases South Island generators’ ability to                        1.10
        compete in wholesale and end-user markets in                         1.08
        the North Island                                                     1.06
                                                                             1.04
      > reduces risk of retailers competing against
                                                                             1.02
        South Island generators in the South Island
                                                                             1.00
                                                                                                 01 Oct
                                                                                                 06 Oct
                                                                                                 11 Oct
                                                                                                 16 Oct
                                                                                                 21 Oct
                                                                                                 26 Oct
                                                                                                 31 Oct

                                                                                                 04 Jan
                                                                                                 09 Jan
                                                                                                 14 Jan
                                                                                                 19 Jan
                                                                                                 24 Jan
                                                                                                 29 Jan
                                                                                                 05 Nov
                                                                                                 10 Nov
                                                                                                 15 Nov
                                                                                                 20 Nov
                                                                                                 25 Nov
                                                                                                 30 Nov
                                                                                                 05 Dec
                                                                                                 10 Dec
                                                                                                 15 Dec
                                                                                                 20 Dec
                                                                                                 25 Dec
                                                                                                 30 Dec
OPERATIONS

Reinvestment capital expenditure
> $72 million of reinvestment capital expenditure for
  FY2014
      > two wells at Kawerau and on-going hydro lifecycle work
> Higher than average reinvestment capital expenditure
  for the rest of the decade given the hydro lifecycle
  programme
      > Arapuni generators - three complete; all four competed
        end of 2013
      > Ohakuri runners - two complete and all four expected to
        be complete at the end of FY2014
      > Next phase of programme will focus on Whakamaru
        rehabilitation
> Geothermal reinvestment capital expenditure is lumpy
  as the sustainable resource is managed
      > dynamic system in which we manage around 200 wells
      > On-going requirement for make-up wells
      > released drilling rig in September on completion of
        Kawerau wells
      > completion of almost ten years of continuous drilling
OPERATIONS

 Market Dynamics
> Operate in a highly competitive and well-functioning market that has led to world-best outcomes
      > for security, level of renewables and resilience to future fuel shocks
> Our portfolio well positioned for demand-supply dynamics
      > current excess capacity, reflecting flat demand and increased renewable generation
      > potential for future reductions in excess capacity, as more flexible take-or-pay requirements lead to further
        response from fossil fuel generators
> Inherent portfolio advantages means greater earnings surety under most market conditions,
  including weak hydro conditions
> Centralised management of wholesale price risk and optimising value across integrated portfolio
Retail
Capital Markets Day

Presented by:
Matthew Olde             Bryan Dobson                   Luke Blincoe
Acting General Manager   Sales, Marketing and Service   GM Bosco Connect
Retail                   Manager                        and GLO-BUG
RETAIL

Retail
> Retail responsible for:

       > Marketing and selling electricity to residential and business customers through Mighty River Power’s
         consumer brands (Mercury Energy, GLO-BUG, Bosco Connect and Tiny Mighty Power)
       > Managing customer segmentation and mix to maximise value
RETAIL

Retail
                                                                 FPVV BUSINESS AND RESIDENTIAL SALES
                                                                 6,000
MIGHTY RIVER POWER RETAIL ELECTRICITY
                                                                 5,000
CUSTOMERS BY BRAND (FY13)
                                                                 4,000

                                                           GWh
                                                                 3,000
                                                                 2,000
                                                                 1,000
                                                                    -
                                              GLO‐BUG                       FY09     FY10     FY11   FY12          FY13    FY14 PFI
  Mercury
                  Other            Tiny Mighty 16,956                                   Business Residential
  Energy                              Power
                  44,504
  349,833                             16,567                 MARKET SHARE OF NATIONAL DEMAND
                                                  Bosco
                                                             (EXCL TIWAI)
                                                 Connect
                                                  10,981         40,000

                                                                 30,000      18%       19%       21%      21%       21%          22%

                                                           GWh
                                                                 20,000

                                                                 10,000

  (note: excludes gas customers)                                        -
                                                                            FY08      FY09       FY10     FY11      FY12     FY13
                                                                              Rest of Market excl Tiwai     MRP Sales volumes

                                                                            Source – Transpower information exchange, MRP data
RETAIL

Competitive Landscape
        > Retail competition a key focus for the Electricity Authority (EA):
                                   > What’s My Number campaign impact
                                   > increased liquidity in hedge markets, reduction of basis risk through transmission investment allowing more
                                     flexibility in retailer portfolio mix, and model use of systems agreements
                                   > EA currently reviewing options to reduce participant prudential requirements and further increase consumers’
                                     propensity to compare and switch retailers
        > High security margins drive elevated competition levels

                               CUSTOMER ELECTRICITY SWITCHING RATES BY MARKET

                             30%
% of annual customer churn

                             25%

                             20%

                             15%

                             10%

                             5%

                             0%

                                                                               2010   2011   2012

        Source – VaasaETT
RETAIL

  Competitive Landscape
  > Mass market switching activity approaching the 2011 peak, especially in Auckland
  > Despite being over-represented in Auckland (68% of Mighty River Power customers Auckland-based), retail
    book churning below market average
  > Grew mass market volume since FY08 ahead of increase in retail competition backed by additional
    generation capacity
 RESIDENTIAL CUSTOMER SWITCHING IN AUCKLAND                                                                                                                                                                          MIGHTY RIVER POWER ICPS &
 & NZ                                                                                                                                                                                                                SHARE OF CONSUMPTION
25%                                                                                                                                                                                                                 450
                                                                                                                                                                                                                                                                     24%
                                                                                                                                                                                                                    400

                                                                                                                                                                                                                    350                                              22%
20%

                                                                                                                                                                                                                                                                           MRP Market Share %
                                                                                                                                                                                                                    300                                              20%

                                                                                                                                                                                                    ICP's (000's)
15%                                                                                                                                                                                                                 250                                              18%
                                                                                                                                                                                                                    200
                                                                                                                                                                                                                                                                     16%
10%                                                                                                                                                                                                                 150
                                                                                                                                                                                                                                                                     14%
                                                                                                                                                                                                                    100
5%                                                                                                                                                                                                                  50                                               12%

                                                                                                                                                                                                                     -                                               10%
0%                                                                                                                                                                                                                        FY08 FY09 FY10 FY11 FY12 FY13
       Jan-10

                         May-10
                                  Jul-10
                                           Sep-10
                                                    Nov-10
                                                             Jan-11

                                                                               May-11
                                                                                        Jul-11
                                                                                                 Sep-11
                                                                                                          Nov-11
                                                                                                                   Jan-12

                                                                                                                                     May-12
                                                                                                                                              Jul-12
                                                                                                                                                       Sep-12
                                                                                                                                                                Nov-12
                                                                                                                                                                         Jan-13

                                                                                                                                                                                           May-13
                Mar-10

                                                                      Mar-11

                                                                                                                            Mar-12

                                                                                                                                                                                  Mar-13

                                                                                                                                                                                                                             Non Auckland
                                                                                                                                                                                                                             Auckland
                                               AKL Market Churn                                              NZ Market Churn                                                                                                 Share of NZ Consumption (excl. Tiwai)
                                               Mercury AKL Churn                                             Mercury NZ Churn
      Source: Electricity Authority
RETAIL

  Mass Market Pricing
  > Headwinds in mass market pricing due to the supply / demand balance and increased competition
  > Headline prices not reflective of offers and discounts offered in the market
  > Lines and transmission charges typically make up 40% of end prices
   AVERAGE DOMESTIC ENERGY PRICE BY                                                          PROPORTION OF MERCURY CUSTOMERS
   RETAILER FOR NZ: 2006 - 2013                                                              ON HEADLINE PRICING
                                                                                             2009
        18                                                                                              3%

        17

        16

        15
c/kWh

        14                                                                                               97%
        13

        12                                                                                    2013

        11

        10
              May-06 May-07 May-08 May-09 May-10 May-11 May-12 May-13                                             39%

                    Contact Energy                          Genesis Energy
                    Mercury Energy                          Meridian Energy
                                                                                                   61%
                    TrustPower                              Contact Energy Online OnTime
                    TrustPower Friends Extra

             Source: Ministry of Business, Innovation & Employment & MRP Analysis

                                                                                           Non Standard Pricing   Headline Pricing
RETAIL

          Contract Market
          > Increased market activity evident in the commercial contract and CFD markets
          > Successful in increasing commercial book in 2012 before ASX markets fell. Average contract tenure 2.8
            years
          > Successfully contracted volume ahead of Ngatamariki commissioning
          > Recent market pricing not aligned with Company view of return for risk

           COMMERCIAL FPVV SALES VOLUMES & PRICING
          10.5                                                                                                                    800

          10.0                                                                                                                    700
           9.5
                                                                                                                                  600
           9.0

                                                                                                                                        Gwh per quarter
                                                                                                                                  500
c / kWh

           8.5
                                                                                                                                  400
           8.0
                                                                                                                                  300
           7.5
                                                                                                                                  200
           7.0

           6.5                                                                                                                    100

           6.0                                                                                                                    0
                  Sep-10   Dec-10   Mar-11       Jun-11   Sep-11   Dec-11   Mar-12   Jun-12   Sep-12   Dec-12   Mar-13   Jun-13

                                MRP FPVV Commercial Sales Volumes             Energy Link FPVV Index       ASX OTA

           Source – Energy Link, ASX, MRP data
RETAIL

Cost Management
> Whilst acquisition costs correlate to the level of switching activity, underlying OPEX continues to be
  actively managed, partially mitigating the cost of increased churn
> Reductions in underlying costs reflect process efficiencies in billing, credit and service functions
                                             RETAIL OPERATING COSTS

                                             100%                                                                                 25%

                                             90%
    % of FY09 Operating & Direct Cost Base

                                             80%                                                                                  20%

                                             70%

                                             60%                                                                                  15%

                                                                                                                                        % Churn
                                             50%

                                             40%                                                                                  10%

                                             30%

                                             20%                                                                                  5%

                                             10%

                                              0%                                                                                  0%
                                                FY09           FY10                FY11                FY12                FY13

                                                                Acquistion Costs     Servicing Costs     Mercury Churn %
RETAIL

Debt Management and Disconnections
> A sustained focus on credit assessment,                                                  WRITE-OFF COST PER ICP (2012)
                                                                                           80
  collection efficacy and leveraging prepay

                                                               Average write-off per ICP
  is resulting in lower bad debt write-offs                                                60
  than industry
                                                                                           40
> Guiding principles for debt management
                                                                                           20
  focus on early intervention and
  appropriate payment solutions                                                            0

> Mercury disconnection rates are falling

                                                                          Source – Veda, Electricity Authority
                              CREDIT PERFORMANCE
                              0.40%                                                                                                               0.70%
                              0.35%                                                                                                               0.60%
    Net debt write off rate

                                                                                                                                                          Disconnection rate
                              0.30%
                                                                                                                                                  0.50%
                              0.25%
                                                                                                                                                  0.40%
                              0.20%
                                                                                                                                                  0.30%
                              0.15%
                                                                                                                                                  0.20%
                              0.10%
                              0.05%                                                                                                               0.10%

                                  -                                                                                                               0.00%
                                        FY09       FY10                                         FY11        FY12                 FY13
                            Net debt write-offs as a % of revenue                                          Arrears disconnection rate - Mighty River
                            Arrears disconnection rate - Industry
Source – Electricity Authority, MRP data
RETAIL

Consumer Brands
> A multi-brand strategy enables a tailored customer experience and cost efficiency

Brand        Established   Customers   Description             Service Experience
             1993            350,000   • Mass market, multi‐   •   Full‐service call centre
                                         segment               •   Comprehensive online service suite
                                       • Scale operation       •   Multiple communication channels
                                                               •   Increased use of online and email channels for both
                                                                   marketing and service
             2006            10,000    • CBD apartments        • Concentrates on low‐cost service channels
                                       • Low cost operating    • Delivers better value to both customer and retailer as a
                                         model for low           result
                                         consumption, high
                                         turnover segment
             2008            17,000    • Smart meter prepay    • Online and app‐based self‐service, pay‐service call centre
                                         product                 available
                                       • Pay‐as‐you‐go         • Uses technology including in‐home display and
                                         budget management       smartphones to deliver more control to the customer
                                         service               • Eliminates credit management cost
             2009            17,000    • Regional towns        • Full‐service decentralised call centre
                                       • Local presence,       • Regional, personalised service proposition
                                         community
                                         engagement
RETAIL

        GLO-BUG
         > GLO-BUG is a smart meter and cloud hosted prepay solution that provides
           a range of tools (IHD, smart phone apps, web) to help customers manage
           their energy account more easily
         > Delivers a socially responsible solution by reducing the total cost of energy
           for most credit distressed customers through avoided fees associated with
           late payment behaviour
                 > on average a customer migrating from Mercury to GLO-BUG reduces their total
                   cost of energy by around $300 on average
         > GLO-BUG well positioned to benefit from wider use of credit checking;
           Meridian and Mercury refer credit distressed and credit check fail
           customers to GLO-BUG
         > Recognised industry solution
                 > transfer of Meridian prepay customer base
                 > won the Innovation Award at the Deloitte Energy Excellence Awards in 2012
    GLO-BUG CUSTOMERS
   20,000

   16,000

   12,000
ICPs

       8,000
                                                                               Includes transfer of Meridian
       4,000                                                                   prepay customers

          -
                 Jan-08    Jan-09     Jan-10    Jan-11     Jan-12     Jan-13
RETAIL

        Tiny Mighty Power
        > Distributed contact centre in selected towns enables lower operating costs and more effective
          engagement through community presence (e.g. Schools programme)
        > Sustained local presence enables higher market penetration (in the towns) than could be achieved
          with the traditional retail approach of one-off acquisition campaign

                                                                                                                                                                                                                              Area (Market Entry)      Market Share %
        TINY MIGHTY ICPS
                                                                                                                                                                                                                              Marlborough (Sep 10)         15.7%
  18,000                                                                                                                                                                                                                      Whakatane (Jul 12)           14.6%
                                                                                                                                                                                                                              Waipa (Nov 09)               13.4%
  16,000
                                                                                                                                                                                                                              Wairarapa (Aug 10)           10.7%
  14,000                                                                                                                                                                                                                      Thames Valley (Sep 10)       3.3%
  12,000                                                                                                                                                                                                                      Rotorua (Jan 13)             1.2%
                                                                                                                                                                                                                              Taupo (Jan 13)               1.0%
  10,000
ICPs

       8,000
       6,000
       4,000

       2,000
          -
               Nov-09

                                          May-10
                                                   Jul-10
                                                            Sep-10
                                                                     Nov-10

                                                                                                May-11
                                                                                                         Jul-11
                                                                                                                  Sep-11
                                                                                                                           Nov-11

                                                                                                                                                      May-12
                                                                                                                                                               Jul-12
                                                                                                                                                                        Sep-12
                                                                                                                                                                                 Nov-12

                                                                                                                                                                                                            May-13
                                                                                                                                                                                                                     Jul-13
                                 Mar-10

                                                                                       Mar-11

                                                                                                                                             Mar-12

                                                                                                                                                                                                   Mar-13
                        Jan-10

                                                                              Jan-11

                                                                                                                                    Jan-12

                                                                                                                                                                                          Jan-13

        Source: Electricity Authority
RETAIL

Innovation
> Focused on strengthening customer
  relationship beyond basic electricity supply:                                  MERCURY ENERGY RESIDENTIAL PRODUCT
> 43k dual fuel customers (since April 2002)                                     PENETRATION
                                                                               100%
> 35k Star Supporter Club members
  donating $850k p.a. to Starship via monthly                                   90%
  bill (since May 2004)                                                         80%
> 36k Mercury Perks members receive                                             70%
  entertainment, travel, food and wine                                          60%
  discounts (since April 2010)
                                                                                50%
> 95k residential customers on fixed price                                      40%
  contracts (since November 2010)
                                                                                30%
> 65k GEM users to date, incl. >60% repeat
                                                                                20%
  users (since March 2013)
                                                                                10%

                                                                                 0%
                                                                                           Jun-09         Jun-10     Jun-11     Jun-12        Jun-13

                                                                                       Electricity only     2 products   3 products      4+ products *

 * Products include: Dual Fuel, Fixed Price Contracts, Mercury Perks, Star Supporters Club, Active
                                                                                       GEM users
RETAIL

              Innovation
               > The Good Energy Monitor (GEM) is delivering increased customer engagement
               > Active GEM users display higher level of satisfaction and lower likelihood to switch

                                    CUSTOMER PERCEPTIONS SINCE LAUNCH OF GEM

                                     60%
% of Mercury customers that agree

                                     50%

                                     40%

                                     30%

                                     20%

                                     10%

                                     0%
                                           Innovative and   Save energy Leading the way Comes up with     Offers     Appeals to you Takes away the
                                             Progressive    and money                     new ideas     something        more           hassle
                                                                                                         different

                                                                                   Feb-13   Jun-13

               Source: Colmar Brunton
RETAIL

Demo of GEM live
$#
Metrix
Capital Markets Day

Presented by
Matthew Olde                       Tim O’Halloran
GM Business Strategy & Solutions   GM Metrix
METRIX

Introduction
> Technology Business
> Advanced Metering Infrastructure (AMI) and Services
METRIX

Business model
> Three key components underpin a flexible business model
      > buy and deploy AMI or leverage third party AMI
      > operate AMI control systems and manage rich information
      > deliver AMI services and field services for retailers or their agents

    AMI TECHNOLOGY                               METRIX SYSTEMS                   CUSTOMERS

  P2P AMI
                                                                                     Retailers
                                                              Retailers Service
                                                              Integration

                                                                                    Distribution
         Collector
                                                                                     networks

                                                                Field Services
     Mesh AMI
METRIX

Client base
> Increased electricity retailer ICP churn provides opportunities for increased deployment

           CLIENT BASE JUNE 2013

                        Contact 13%
                                      Meridian
                                        7%
                                           Glo-Bug                      Powershop 4%
                                             7%

                                            Other 11%                   Genesis 3%

              Mercury 61%                                               Other 3%

                                                                        Bosco 1%
METRIX

Enabling retailer propositions
> AMI propositions are now coming to life
      > Mercury - Good Energy Monitor
      > GLO-BUG Prepay/GLO-BUG and IPHONE
      > Powershop
      > Contact Energy
METRIX

The AMI market in Auckland
>   Metrix has a long heritage in New Zealand’s biggest retail/residential market
>   Now 85% deployed with AMI
>   Metrix holds 70% market share
>   Ongoing deployment programme in Auckland

                   AUCKLAND AMI METERING MARKETS JUNE 2013

                                                               Metrix AMI

                                                               AMS AMI

                                                               Legacy
METRIX

AMI market nationally
Market structure
> Rollout of AMI is driving market consolidation in electricity metering
> Three AMI providers now deployed 50% AMI
> Retailer-led model
> Beginning to see maturity in service interoperability among the three AMI providers

                  JUNE 2013

                          Metrix AMI, 329
                                                                               Legacy upgrade assigned,
                                                                                         577

                                                Other, 1043
                      AMS AMI , 505

                                                                                Legacy upgrade
                                                                               uncommitted , 466

                                Arc AMI , 135
METRIX

The AMI market nationally
Operating environment
> Expect stabilisation following recent, extensive
  changes to the electricity metering regulations
> Significant investment in systems interface
  with the Electricity Registry completed
> Compliance deadline of 1 April 2015 rapidly
  approaching for Category 1 metering
  installations
      > all metering installations up to 3-phase 100
        Amps require full certification
> Elevated levels of Electricity ICP churn
METRIX

Operating statistics
> $101m of capital expenditure over the last five financial years
> EBITDA doubled from FY2009 to FY2013

 Year ended 30 June                        FY2013       FY2012      FY2011    FY2010    FY2009
 Capital Expenditure ($m)                      8.4         16.6        33.0      25.8      17.1

 AMI                                       314,586      281,340     240,586   120,877    35,104

 Legacy Meters                              58,663       84,405     121,726   192,213   279,119

 Legacy Meters – 3 phase                    23,908       25,673      33,005    33,296    32,542

 Load Control (hot water)                  270,332      268,163     252,380   227,504   226,239

 Pre‐pay                                    13,586       14,679      15,198    14,765    12,095

 Total Assets                              681,075      674,260     662,895   588,655   585,099
METRIX

Growth opportunity
Expansion activity
> Deploying AMI into new regions for Mighty River Power
  consumer brands
> Providing exclusive AMI services on the Counties Power
  network
> Further AMI opportunities available in the market

Capital investment
> Future capex spend depending on growth opportunities
  around $20m - $40m p.a.
      > PFI FY14 forecast was $12.8m
> Revenues flow immediately following deployment
Development
Capital Markets Day

Presenters:
Mark Trigg            Samuel Moore                  Dennis Radich
GM Development        Manager Strategy & Planning   Generation Development Manager
DEVELOPMENT

A significant role in both of the Company’s core business strategies

> Maximising the value of the existing business
      > Technical Resources Team (Rotorua) provides specialist
        technical services to Operations through Geoscience;
        Reservoir Engineering; Asset Management; Well Services;
        Chemistry
> Securing economically attractive development options
      > Business Development Team (Auckland based)
      > Chilean operations and development team (Santiago based)
DEVELOPMENT

The trend in the domestic market required an adjustment to strategy
> Reset the level of domestic activity
      > maintain a small number of long-dated options with sufficient diversity of scale, fuel type and technology
      > align the resourcing to match the reduced activity levels
      > consider the optimal configuration of existing gas generation

> Increase our focus on existing investments in offshore jurisdictions
      > removed the intermediary between the Company and its offshore investments in Chile and California,
        enabling significantly greater direct management involvement
      > fully controlled entity in Chile
      > Board representation, management and technical collaboration in EnergySource (California)
DEVELOPMENT

Domestic activity curtailed consistent with demand requirements
> Small focused number of
  opportunities being maintained
      > wind and geothermal preferred
> Other lesser opportunities
  abandoned
> Lower touch/lower cost approach as
  we await market recovery
> Significant reductions in resourcing
  undertaken or planned
      > headcount peaked at circa 150
        (inclusive of Chile) during
        Ngatamariki construction
      > trending towards 90
      > 2/3 in technical resources
DEVELOPMENT

A strong position in wind has been created
> Two very high quality, consented
  Class 1 (high wind speed) sites
  South East of Palmerston North
> Fully consented 220kV transmission
  line route to link projects to the
  Transpower grid
> Transmission line consent large
  enough to accommodate all four
  wind projects in the area (note
  Waitahora & Castle Hill consented
  without transmission)
> Staged execution options to meet
  market opportunities
> Also a third (earlier stage) Class 1
  site, Cape Campbell, in Marlborough
  with long-term development rights
DEVELOPMENT

Offshore an opportunity to leverage niche capabilities and create a new growth channel

> The Company has, during the 10 year period of domestic development, built up institutional
  knowledge in
       > geothermal risk assessment
       > development capability
       > technical resource capability
       > geothermal operations

> The small size of the global geothermal market created opportunity to leverage that strategic
  advantage not held in any other fuel sources

> Additional risks in new jurisdictions offset by diversifying existing risks
      > soft domestic market with increased regulatory uncertainty
      > long term domestic contract price uncertainty

> Route to maintain institutional knowledge in absence of new domestic opportunity

> Consider the programme as a continuous one, not bounded by geography per se
       > US-based John L Featherstone plant (HR1) in commercial operation prior to completion of Ngatamariki,
         first evidence of that transition
       > further Salton Sea (US) development seen as next most likely project
DEVELOPMENT
After five years we have created a platform from which we can control future
   direction
> Created the opportunity to consider a number of development options via GeoGlobal Energy (GGE)
  that would have been inaccessible otherwise
> Have direct control of those investment opportunities we elected to pursue
      > direct investment in EnergySource with a preferred position in John L Featherstone plant
      > direct ownership of Chilean entity and resource rights
      > financial interest in German assets currently under management control of GGE, but including a repurchase
        option (nominal cost) should certain financial criteria not be met by GGE
> Transformed the structure of original investment (designed to meet SOE constraints) to enable
  direct management and control
      > absorbed the management of the assets / investments into our own development structure with significantly
        reduced cost
      > closer alignment of incentives between partners
      > leverage of existing resources and systems that successfully delivered the domestic programme over the
        past decade
      > apply patient approach to development as required with full control over capital allocation decisions
DEVELOPMENT

Investment in John L Featherstone has already paid dividends

> Initial USD92m investment
        > 20% holding in EnergySource
        > preferred equity interest in John L
          Featherstone Plant
        > post construction refinancing led to lump
          sum distribution of USD118m
> Post tax cash flow returns influenced by “flip”
  dates
        > circa USD1m until tax equity flip forecast in
          late 2017
        > circa USD4.5m from then until MRP
          “preferred” return completed in 2021
        > circa USD2m thereafter
> Resourcing
        > EnergySource has operational and
          development teams based in San Diego
          and Salton Sea
        > hold one (of three) board seats
        > interaction at management and technical
          levels giving direct access to information
> Hudson Ranch II
        > EnergySource has PPA for a further project
        > has additional land
DEVELOPMENT

Salton Sea represents a significant opportunity
> Field
      > Cal Energy has operated 10 plants with 327MWe                          US GEOTHERMAL FIELD BY RUNNING
        net (340MWe gross) since 2000                                                    CAPACITY
      > no make-up wells required to support pressure              Geysers
        decline (small number due to well condition)             Salton Sea

> State                                                               Coso
                                                                                                              Running capacity
                                                                     Heber
      > ongoing significant retirements of gas plant due to      Steamboat
        restrictions on ‘Once Through Cooling’                   East Mesa
      > San Onofre (2200MW nuclear) closure                     Dixie Valley                                  Additional
                                                                                                              resource
      > geothermal baseload characteristics / benefits are    Blue Mountain
                                                                                                              potential
        starting to be recognised in context of large              Roosvelt

        amount of intermittent renewables                             Puna

> But we are mindful of                                                        0             500             1,000            1,500
                                                                                                     MW
      > Californian utilities near the 20% Renewable
        Portfolio Standards requirements but some way to
                                                                     Source:       Running Capacity: International Geothermal Assn
        go to reach 33% requirement by 2020                                        Database
      > longevity of federal tax incentives always                                 Additional resource potential: Western Governors'
        uncertain                                                                  Association Geothermal Task Force Report, Jan 2006

> Future
      > Mighty River Power elected not to exercise its option to increase its stake to 33% - value based decision
      > discussions are ongoing with partners about alternative mechanisms by which we may increase our
        participation
      > access to greater acreage of development land would enable participation in huge potential of field
DEVELOPMENT

Chile overview
Geothermal potential                                                     PUCHULDIZA

> Large number of geothermal fields throughout Chile
> Mighty River Power has direct ownership of two of the top
  concessions:
      > Tolhuaca (central Chile)
      > Puchuldiza (northern Chile)

Market potential
                                                              SANTIAGO
> Strong growth economy (resources driven)
> Strong electricity demand growth
> Recognized electricity supply challenges                                TOLHUACA
> Politically stable
> Good regulatory regime and established institutions
> Deep and sophisticated capital markets for infrastructure
  investment
> Long term attractive outlook
DEVELOPMENT

Chile is a strong demand growth market
                                                              TOTAL ELECTRICITY DEMAND
> Average historical electricity demand growth
                                                                   70,000
  rate of >6% p.a.
                                                                   60,000                  1990‐2011 CAGR: 6.4%
> Demand driven both by commodity export                           50,000
  sector and increasingly by domestic demand                       40,000

                                                             GWh
  (middle class expansion from 1990)                               30,000

> Two contracting markets for generators to sell                   20,000
                                                                   10,000
  into:
                                                                        0
      > Regulated client (distributor/retailers) tender                      1990 1992 1994 1996 1998 2000 2002 2004 2006 2008 2010
        market
                                                                   Source:       Chilean Ministry for Energy
      > “Free client” market for bilateral contracts with
        large end users >2MW                                 TOTAL SIC NETWORK GENERATION

                                                                  60,000
                                                                  50,000
                                                                  40,000
                                                            GWh   30,000
                                                                  20,000
                                                                  10,000
                                                                       0

                                                                                      Hydro      Thermal       Other
                                                                  Source:      CDEC‐SIC
DEVELOPMENT

Supply challenges driving favourable price outlook
                                                            SIC SPOT PRICES
> Chile imports about 75% of its total primary
  energy supply                                                       400
                                                                      350
> Beginning in 2004, Argentina curtailed
                                                                      300
  exports of natural gas to Chile                                     250

                                                            US$/MWh
> Base load generation historically dominated                         200
  by coal and hydro                                                   150
                                                                      100
> Energy price outlook reflects likely                                 50
  dependence on imported LNG for new                                    0
  (CCGT) capacity                                                           2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013

        > growing opposition to new coal & hydro                                          Spot price at Temuco 220kV node
        > some gas-fired plants converted to liquid                     Source:       CDEC‐SIC
          fuels                                              REGULATED CLIENT DEMAND
        > LNG import capacity constrained                   50,000

> Renewables targets increasing* from 10%                   40,000
  to 20% by 2025
                                                            30,000
> Non-conventional renewable energy credits
                                                      GWh

  available for geothermal generation                       20,000

> Generators are paid a firm capacity charge                10,000
  for being available
                                                                        0
                                                                              2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023

                                                                                Contracted volume           Regulated client demand
* Passed by Senate; now back with Congress
                                                                            Source:    CNE
DEVELOPMENT

World geothermal players are active in Chile
> Large number of exploration concessions have been granted
> Some of world’s largest geothermal companies are present

> All attempting to solve similar issues of bridging geothermal potential with market opportunity
> Starting to see consolidation and exit over time of more speculative resource holders
> Potential for further consolidation of industry as experienced developers optimise portfolios and
  speculators exit

> Mighty River Power’s current focus
      > de-risking project execution through commercial partnerships
      > revenue security (e.g. PPA)
      > deepening understanding of resource position
      > sizing the local platform to near term activity levels
DEVELOPMENT

Successful geothermal development requires recognition that -
> Patience is necessary
> Successful partnerships require alignment of incentives and preferably
      > complementary strategic capabilities
      > robust financial capacity of each partner
> Scale becomes valuable to spread technical platform costs
> Risk diversification is valuable
      > through multiple fields for resource diversity
      > different jurisdictions enable regulatory and pricing risk diversity
> A detailed understanding of market dynamics is important
      > a core strength in our home market
      > a key strategic capability sought in partners for other jurisdictions
> Staged development is a rational response to long-term resource uncertainty
> Overheads need to be managed through the development cycle
2 October 2013

Capital Management
Capital Markets Day

Presented by:
William Meek              Tim Thompson
Chief Financial Officer   Treasury Manager
CAPITAL MANAGEMENT

Capital Structure
Disciplined approach to capital allocation
> Balance sheet consistent with a stand alone
  credit profile of ‘bbb’ by S&P (or equivalent)1
> Dividend policy targets dividend yield attractive
  to shareholders while cognisant of a sustainable
  financial structure
           > working capital requirements
           > the medium term asset investment programme
           > short to medium term risks on earnings
> Focus on maintaining an appropriate portfolio of
  high quality investment opportunities
           > evaluate against all competing uses for cash
> Capital management is addressed on an on-
  going basis by management and the Board

1.   Mighty River Power’s BBB+ corporate credit rating reflects S&P’s view that in the
     event of financial distress there is a “moderate” likelihood of the New Zealand
          Capital
     sovereign       management
                providing                  as normal
                           extraordinary support to ensurebusiness
                                                             the company’s financial
     obligations are met in a timely  manner.
                                   practice
2.    Free Cash Flow defined as Operating Cash Flow after interest paid and tax less
     reinvestment capex
CAPITAL MANAGEMENT

 Capital Allocation

 > FY2014 forecasts reflect full year cash flow
   contribution from Ngatamariki
 > FY2014 Capex forecast reduced relative to
   PFI to be in the range of $125m to $175m
 > FY14 PFI forecasts dividend of $182m (13
   cents per share)
           > forecast Payout 107% of adjusted Net Profit
             and 71% of Free Cash Flow
           > gross yield circa 8% (fully imputed)
 > Modest deleveraging forecast if capex at
   low end of forecast range
 > On-going focus on sustainable earnings
   looking forward driven by:
           > normalisation of generation output (average
             hydro, full year of Ngatamariki)
           > improvements in business wide
             effectiveness and efficiency

* Other cash flows from investing and financing activities as disclosed in
Mighty River Powers FY2013 financial results and prospectus
CAPITAL MANAGEMENT

Balance sheet management
> Mix of short and long term funding
                                                                       DEBT MATURITY PROFILE AS AT 30 JUNE
         > weighted average maturity exceeding 5 years
                                                                           350
         > $300m of new facilities arranged in FY2013
           ($200m of bank and $100m of domestic                            300
           wholesale bonds)
         > no maturing facilities in FY2014 (excluding CP)                 250
         > option to convert RCAF into longer term debt
                                                                           200
> Liquidity

                                                                      $m
         > $475m of committed but unutilised bank                          150
           facilities
         > $100m of commercial paper outstanding                           100
> Cost of Funds
                                                                            50
         > cost of funds likely to remain at current levels
           until 2018 due to long term hedging undertaken
                                                                             0
           in 2008 prior to ramp in capex/debt to support

                                                                                  2014
                                                                                         2015
                                                                                                2016
                                                                                                       2017
                                                                                                              2018
                                                                                                                     2019
                                                                                                                            2020
                                                                                                                                   2021
                                                                                                                                          2022
                                                                                                                                                 2023
                                                                                                                                                        2024
                                                                                                                                                               2025
                                                                                                                                                                      2026
           geothermal development programme
                                                                                                          Financial Years
                                                                                                        Drawn        Undrawn1

                                                                                 375            100 125                            550                          260
                                                                                                              Facility Type ($m)
                                                                           RCAF - Undrawn                                      RCAF - Undrawn: CP Cover
1. $100m of outstanding commercial paper deducted from undrawn debt
                                                                           RCAF - Drawn                                        Wholesale Bonds
2. USD proceeds fully swapped to NZD via cross currency swaps
                                                                           US Private Placement22
CAPITAL MANAGEMENT

Balance sheet management
Cost of Funds                                                  INTEREST RATE HEDGING
                                                               1400                                                               8.0%
> Term funding and interest rate hedging (swaps)
  undertaken prior to undertaking geothermal
                                                                                                                                  7.0%
  development programme                                        1200

       > reduce funding and liquidity risk and provide
         cash flow certainty in the medium term                                                                                   6.0%
                                                               1000
       > most swaps not hedge accounted currently so

                                                                                                                                         Swap Rate (%)
         fair value movements recognised through P&L                                                                              5.0%
                                                               800
       > to reduce P&L volatility accounting policy now

                                                          $m
         requires all new hedges to be hedge accounted                                                                            4.0%

> The significant fall in interest rates in NZ (and            600
                                                                                                                                  3.0%
  globally) post 2008 has resulted in these
  hedges being out of the money                                400
                                                                                                                                  2.0%
       > FY2013 fair value benefit of $25.6 million
       > FY2012 fair value cost of $92.8 million               200
                                                                                                                                  1.0%
> Debt re-financing has negligible impact on cost
  of funds excepting credit spread which is largely              0                                                                0.0%
  driven by debt market and term
                                                                      FY2008

                                                                                 FY2009

                                                                                          FY2010

                                                                                                       FY2011

                                                                                                                FY2012

                                                                                                                         FY2013
> Cost of funds will be higher than benchmark
  funding rates until hedges expire in 2018
                                                                               Debt                10yr IRS (Annual Average)
CAPITAL MANAGEMENT

Capital expenditure
> $1.4b invested in geothermal domestically since              CAPITAL EXPENDITURE
  2006                                                         450
      > cumulative revaluations of new geothermal
        assets exceed $0.5b at 30 June 2013                    400

> Lower capital expenditure forecast on a go                   350
                                                                                42
                                                                                                      14
  forward basis reflecting no large scale domestic
  generation development programme                             300

> FY2014F capital expenditure reduced to $125m                         38
                                                               250                                               10
  - $175m (PFI: $199.1m)

                                                          $m
                                                                                                      274
      > Reinvestment capex $72m (2 new wells at                200              280      44
        Kawerau and on-going hydro lifecycle
        refurbishment)                                         150                                               173      50
                                                                     225
      > $13m for Ngatamariki carried forward from                                        119
                                                               100                                                        53
        FY2013
      > other capex includes AMI                                50
                                                                                66                    74         69       72
      > contingent provision capex largely relates to                                    57
                                                                       26
        offshore geothermal, discussing alternatives at         0

                                                                       FY2009

                                                                                FY2010

                                                                                         FY2011

                                                                                                      FY2012

                                                                                                                 FY2013

                                                                                                                          FY2014F
        Energy Source

                                                          Potential other new investment          Other new investment
                                                          Geothermal                              Reinvestment
CAPITAL MANAGEMENT

   Capital Structure
   > Mighty River Power Board is committed to maintaining a ‘bbb’ stand alone credit profile
   > S&P favour the use of cash flow metrics to assess the financial risk profile of the company
                            > key comparative measures for Mighty River Power and it’s peers are Funds from Operations (FFO) coverage
                              and leverage metrics
                      FFO / DEBT*                                                                       FFO INTEREST COVERAGE*
                      50%                                                                                                           7.0
                      45%                                                                                                           6.5

                                                                                                        FFO Interest Coverage (x)
                      40%                                                                                                           6.0
     FFO / debt (%)

                      35%                                                                                                           5.5
                      30%                                                                                                           5.0

                      25%                                                                                                           4.5

                      20%                                                                                                           4.0

                      15%                                                                                                           3.5

                      10%                                                                                                           3.0
                            2008

                                      2009

                                                 2010

                                                              2011

                                                                          2012

                                                                                     2013

                                                                                                 2014

                                                                                                                                          2008

                                                                                                                                                     2009

                                                                                                                                                                  2010

                                                                                                                                                                               2011

                                                                                                                                                                                           2012

                                                                                                                                                                                                      2013

                                                                                                                                                                                                                  2014
                                                        Financial Years                                                                                                  Financial Years

                            Mighty River Power          Contact           Meridian          Genesis                                          Mighty River Power           Contact          Meridian          Genesis

    > Mighty River Power metrics presently tighter than competitors
    > Key credit metrics expected to improve in FY14 due to lift in earnings from removal of one-
      off costs and commissioning of Ngatamariki

*Calculated using S&P existing criteria and metric definitions
 Source: S&P Credit Reports and Mighty River Power calculations based on publicly available information
CAPITAL MANAGEMENT

Credit criteria
> S&P is currently reviewing the criteria for rating corporate industrial companies and utilities
       > stated rationale being to make the ratings process more transparent and comparable across industries and
         jurisdictions
> Criteria for intermediate risk, standard volatility unchanged from 2009 core ratios but S&P specifics
  to NZ generators historically lower than published ratio bands
       > FFO/debt: 30-45%, Debt/EBITDA: 2-3x
       > we believe S&P are potentially seeking to pre-empt impacts on ratios when interest rates rise given
         currently record low rates globally
> S&P have indicated that the new criteria will likely be in place from the start of calendar year 2014
       > consultation was concluded in September 2013
> S&P have indicated that 10% of credits will likely be affected .
       > the likelihood of upgrades and downgrades across all S&P credits has been assessed as equal by S&P
CAPITAL MANAGEMENT

Sustainable earnings focus
> Weak demand and supply conditions means the company has moved from growth phase to consolidation phase
       > potential for demand/supply surprises particularly on supply side reflecting thermal response
> FY2014 EBITDAF guidance confirmed at PFI levels
       > generation down over 260GWh against expected levels in Q1 FY2014
       > Ngatamariki commissioned and handed over. Generation over Q1FY2014 similar to forecast but income
         recognition two months later than expected
       > improved LWAP/GWAP ratio due to peakier hydro profile and NIGUP improving location factor between
         generation and Auckland.
> FY2014 PFI operating expenditure of $250.5 million
       > FY2013 operating expenditure at $318.7 million included $68.7 million one-off IPO and international
         geothermal related costs - $250.0 million
       > FY2012 operating expenditure of $264.4 million included $10.0 million one off costs - $254.4 million
> Capital markets insights coupled with review processes have identified focus areas to drive sustainable earnings
       > in Q4 FY2013 saw $18.4 million savings –two thirds of which are permanent savings
> Group-wide efficiency and effectiveness programme underway to deliver sustainable benefits through time
       > rationalisation of suppliers, centre led procurement
       > right sizing business for current market environment and activity levels
       > consolidation of support services
CAPITAL MARKETS DAY

Capital management considerations
> Sustained level of elevated reinvestment capital planned – c$10m p.a over rest of the decade
> A lower requirement for domestic growth capex exists but capital required over medium term to
  advance international geothermal
> Clarity required around new S&P credit criteria connected to sustainable financial structure
> A number of capital management options exist in absence of growth investments
      > change to ordinary dividend: Policy needs to be sustainable and cognisant of rating, working capital
        requirements, the medium term asset investment programme and earnings volatility
      > special dividend: one-off return of excess capital but cognisant of the above, unimputed if large
      > share buy-back: would need to be in the best interests of the company and shareholders
> Dividend policy
      > policy expressed as 90% - 110% of adjusted profits cognisant of a sustainable financial structure, working
        capital requirements, the medium term asset investment programme and short to medium term risks on
        earnings
      > FY2014F dividend declared of 13 cents/share. Forecast to be fully imputed –a further 3 cents worth of
        imputation credits available as at the end of FY2014
      > 71% of free cash flow (FY2013 pay-out was 78% of FCF)
> Capital management outcomes will be announced at ASM (7 November 2013)
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