TEN-YEAR GAS TRANSMISSION NETWORK DEVELOPMENT PLAN FOR THE 2018 2027 PERIOD
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TEN-YEAR GAS TRANSMISSION NETWORK
DEVELOPMENT PLAN FOR THE 2018 − 2027 PERIOD
September 2017
Plinovodi d.o.o, Cesta Ljubljanske brigade 11b, PO box 3720, 1001 Ljubljana; Tel.: +386 (0)1 582 07 00
Fax: +386 (0) 1 582 07 01; Email: info@plinovodi.si; VAT Reg No: SI31378285
Ten-Year Gas Transmission Network Development Plan for the 2018 - 2027 Period
TABLE OF CONTENTS
Preface .................................................................................................................................................................................... 3
Summary ................................................................................................................................................................................. 4
Introduction ............................................................................................................................................................................ 5
1 Definitions ...................................................................................................................................................................... 6
2 Consultations .................................................................................................................................................................. 6
2.1 TSO's consultations with stakeholders .................................................................................................................................. 6
2.2 Activities of the Energy Agency in relation to network development .................................................................................... 6
3 Supply and demand for transmission capacity of Slovenian natural gas transmission system and natural gas supply ...... 7
3.1 Current situation of the natural gas transmission system ..................................................................................................... 7
3.2 Domestic market ................................................................................................................................................................... 8
3.2.1 Supply of natural gas to Slovenia and access to natural gas sources ..................................................................... 8
3.2.2 Slovenian Energy Concept − orientations ............................................................................................................... 9
3.2.3 Existing supply of transmission capacity as of 1 January 2017 ............................................................................. 10
3.2.4 Infrastructure standard and compliance with Regulation 994/2010/EU ............................................................. 12
3.2.5 Supply and demand for transmission capacity – territorial coverage .................................................................. 15
3.2.6 Comparison of the role of natural gas in Slovenia and Europe ............................................................................ 17
3.2.7 Natural gas consumption in the country in the 2008 – 2016 period .................................................................... 20
3.2.8 Demand and anticipated supply of transmission capacity ................................................................................... 21
3.2.9 Forecast of natural gas consumption and booking of transmission capacity for the 2018 – 2027 period ........... 24
3.3 Cross-border transmission capacity and booking ................................................................................................................ 26
3.3.1 Demand for booking at cross-border interconnection points .............................................................................. 27
3.3.2 Booking of transmission capacity at cross-border interconnection points in 2016 .............................................. 28
3.3.3 Booking forecast and estimates ........................................................................................................................... 31
4 Set of planned gas infrastructure for the 2018 − 2027 period ........................................................................................ 34
4.1 Projects to increase operational security............................................................................................................................. 34
4.1.1 "Management Centre" project ............................................................................................................................. 36
4.2 Connection projects ............................................................................................................................................................. 38
4.3 Development of interconnection points with the neighbouring transmission systems ....................................................... 41
4.4 Projects in preparation and planning in the 2018 − 2020 period and projects in implementation ..................................... 45
4.5 Assessment of options for the increase of energy efficiency ............................................................................................... 47
5 European dimension of natural gas supply .................................................................................................................... 50
5.1 Development of exchanges with other countries ................................................................................................................ 50
5.2 Supply of natural gas to EU countries and access to natural gas sources ........................................................................... 51
5.3 REGULATION (EU) No. 347/2013 on guidelines for trans-European energy infrastructure ................................................. 52
5.3.1 PCI 2015 list .......................................................................................................................................................... 53
5.4 ENTSOG ............................................................................................................................................................................... 54
5.4.1 TYNDP ................................................................................................................................................................... 55
5.4.2 GRIP CEE and GRIP Southern Corridor .................................................................................................................. 56
ANNEXES ............................................................................................................................................................................... 57
Abbreviations ........................................................................................................................................................................ 77
2
Ten-Year Gas Transmission Network Development Plan for the 2018 - 2027 Period
Preface
This is the material of the tenth Gas Transmission Network Development Plan for the ten-year period,
for the 2018 – 2027 period. It was developed in coordination with the European Network of
Transmission System Operators for Gas (ENTSOG) and in the process of two regional development
plans. Moreover, we are considering the development of neighbouring transmission systems and
neighbouring gas markets, we pay special attention to the domestic gas market, the development of
natural gas consumption in the country, and thus the necessary development of the transmission
system. Moreover, we are continuing with the in-depth analyses of natural gas consumption in the
future.
The gas market is becoming more and more dynamic and insecure, natural gas flows in the
transmission system and the natural gas consumption show growth, while the directions of natural gas
flows have become increasingly unpredictable. We have recently used the term "dynamic market" only
to describe the growing number of transmission contracts concluded for periods that began to shorten,
and now this concept has expanded to all areas of our operations. The vibrancy of the market affects
the scope of our work, business operations, and the planning of what the transmission system needs for
its operation.
The concern for reliable, safe and economical operation of the transmission system is at the forefront
and properly covered in this document. We have analysed the presented projects, prioritised them and
determined their implementation time line, using the prescribed procedures and tools. Our guiding
principles were our assessments of the role and opportunities of natural gas as an environmentally-
friendly energy product at the national level and in individual areas of the country.
Marjan Eberlinc
General Manager
Sarah Jezernik
Deputy General Manager
3
Ten-Year Gas Transmission Network Development Plan for the 2018 - 2027 Period
Summary
The Slovenian gas transmission system is part of the energy infrastructure of national importance that
is present in 108 of the total 212 Slovenian municipalities. In the energy balance sheet of the Republic
of Slovenia for the year 2016 it was estimated that in the final energy consumption structure the share
of petroleum products will stand out with 46.5%, followed by electricity with 22.5%, renewable energy
sources with 13.8%, natural gas with 12.1%, heat with 3.7%, industrial waste with 0.8% and solid fuels
with 0.7%. As an energy product, compared to the European average, natural gas has a much more
modest representation in the national energy balance sheet, with the exception of industrial
consumers sector.
The transmission system operator (TSO) measures the demand for natural gas transmission in the
domestic energy market based on queries, approvals issued and connection contracts concluded with
distribution system operators (DSO), industrial users and electricity producers. In 2016, there were
54 queries, 7 approvals for connection were issued and 4 connection contracts were concluded.
Regarding the purpose of the gas projects in relation to security updates, development of domestic gas
market and harmonisation with international projects, the TSO breaks down the planned infrastructure
into 3 groups. Group A contains 18 projects to increase operational security, i.e. loops and adjustments
to the pipeline system due to settlement and other circumstances. Group B contains 58 connections.
Group C contains 17 projects for the development of interconnection points with the transmission
systems of neighbouring countries, which include 4 projects that have been listed as projects of
common interest in November 2015 by the European Commission. Regarding the achieved maturity of
individual projects, the TSO estimates that it will implement (construct or begin construction on)
18 pipeline projects in the three-year period of 2018 − 2020, 8 of them planned.
4
Ten-Year Gas Transmission Network Development Plan for the 2018 - 2027 Period
Introduction
As the TSO in the Republic of Slovenia, the company Plinovodi is obliged in accordance with the
provisions of the Energy Act (EZ-1)1 to adopt and submit for confirmation to the Energy Agency a 10-
year network development plan every year after consulting the relevant stakeholders. The plan must
be based on the existing and expected supply and demand and include efficient measures in order to
guarantee the adequacy of the system and the security of supply.
The purpose of the Ten-Year Gas Transmission Network Development Plan for the 2018 – 2027 Period
(hereinafter: Development Plan) is to:
Determine the main infrastructure for transmission that is to be built and upgraded over the
next years for players on the market,
Contain all the investments that have already been decided and identify new investments that
have to be carried out within the next three years,
Provide a time frame for all investment projects.
When preparing the development plan, the TSO has formed reasonable assumptions on the
development of production, consumption within the domestic energy market and exchanges with other
countries. It has taken into account the investment plans for regional networks and EU-wide networks
as well as investments for the natural gas storage facilities and liquefied natural gas (LNG) re-
gasification facilities.
1
Official Gazette of RS, Nos. 17/2014, 81/2015
5
Ten-Year Gas Transmission Network Development Plan for the 2018 - 2027 Period
1 Definitions
Unless the meaning of an expression is otherwise defined in an individual section of the development
plan, the expressions and units of measurement used have the same meaning as defined in the
applicable legislation.
2 Consultations
2.1 TSO's consultations with stakeholders
Between 6 April and 1 May 2017, the TSO published a draft of the development plan on its website.
Within the public consultation procedure, it has invited all interested public representatives to present
comments, suggestions or additions to the draft. During the public consultation process, which lasted
for one month, it has received 4 responses. It has researched all of the responses, taken them into
account and explained the reasoning to the interested public. All neighbouring TSOs have also been
notified of the development plan draft beforehand, and we have received 2 responses.
2.2 Activities of the Energy Agency in relation to network development
The Energy Agency carried out a consultation procedure with all actual and potential system users by
publishing the development plan on its website and inviting them to submit their remarks. The
consultation procedure was concluded on 10 July 2017.
6
Ten-Year Gas Transmission Network Development Plan for the 2018 - 2027 Period
3 Supply and demand for transmission capacity of Slovenian
natural gas transmission system and natural gas supply
3.1 Current situation of the natural gas transmission system
In terms of flows of natural gas in Europe, the geographic position of Slovenia is fairly favourable. It is
in close proximity to the transmission routes from north eastern Europe (from Russia through Slovakia
and Austria towards Italy and Croatia) and bordering on Italy, where the transmission routes from the
Mediterranean Basin and northern Europe converge. Moreover, the Slovenian system is in the vicinity of
the existent and newly planned LNG terminals in the Adriatic Sea.
The Slovenian gas transmission system comprises 1,156km of pipelines, two compressor stations in
Kidričevo and Ajdovščina, and 245 metering and regulation stations or other stations. At key points,
the gas transmission system is equipped with devices through which the system can be controlled and
maintained. The remote control and monitoring functions are carried out by means of an information
and telemetry system.
Table 1. Main infrastructure – gas transmission pipelines by pipeline diameter and other facilities
and equipment
Infrastructure Status as of 1 January 2017
Gas network Total 1,156km
Pipelines with a diameter of 167km
800mm
Pipelines with a diameter of 162km
500mm
Pipelines with a diameter of 197km
400mm
Other pipelines of smaller 629km
diameters
Facilities and Compressor stations, total CS Kidričevo 10.5MW, CS Ajdovščina 9MW
equipment power
Cross-border stations Ceršak, Rogatec, Šempeter pri Gorici
Table 2. Gas transmission network – high and low pressure (as of 1 January 2017)
Low pressure (16
Pressure Total
bar) bar)
Horizontal length (km) 210.9 944.9 1,155.8
Percentage (%) 18 82 100
The gas transmission system connects most of the industrial and urban centres in Slovenia, with the
exception of the Obalno-kraška region, Bela Krajina and part of Inner and Lower Carniola.
The gas transmission system is controlled and monitored from the dispatch centre that is connected to
the dispatch centres of transmission systems operators of neighbouring countries, as well as to
distribution network operators and major consumers of natural gas.
A major part of the existing gas transmission network is older than 30 years.
7
Ten-Year Gas Transmission Network Development Plan for the 2018 - 2027 Period
Table 3. Gas transmission network − age structure (as of 1 January 2017)
less than 10 between 10 and between 20 and more than 30
Age
years 20 years 30 years years
Horizontal length (km) 204.9 16.6 235.8 698.5
Percentage (%) 18 2 20 60
Figure 1. Gas transmission network in January 2017
The Slovenian natural gas transmission system began its operations in 1978, and was then gradually
expanded and upgraded. In 2014, the last major investment cycle was completed with the construction
of a pipeline from the Austrian border at Ceršak to Vodice near Ljubljana. In addition to providing
additional necessary transmission capacities, the safety and reliability of the transmission system
operation were improved. With regular inspections and regular maintenance work, the company
Plinovodi d.o.o. as a transmission system operator ensures safe and reliable operation of the
transmission system. The status of transmission pipelines is regularly monitored by supervising pipeline
routes, by performing internal inspections of gas pipes, by using various methods of external gas
pipeline inspection, and by constantly monitoring the operational parameters via the central control
system. With the cathodic protection system, transmission pipelines are protected against the
development of corrosion damage. Based on preventive inspections and maintenance work, we
estimate that the gas infrastructure is in very good operating condition; so far, we have not had any
major operational problems that could not have been managed in the framework of the planned
maintenance interventions.
3.2 Domestic market
3.2.1 Supply of natural gas to Slovenia and access to natural gas sources
Due to the lack of own sources, the supply of natural gas to the Slovenian market depends entirely on
imports. The supply of natural gas to Slovenia takes place from Russia and individual hubs of the
8
Ten-Year Gas Transmission Network Development Plan for the 2018 - 2027 Period
European gas market. From Austria, natural gas flows via the Ceršak entry point, and from Italy, via
the Šempeter entry point. Natural gas, located in the trading hubs of the European market, is been
pumped out both in Europe, as well as in North Africa and Russia.
18000 Data source:
16000 Energy Agency, Important
indicators for the supply of
14000
electrical energy and natural gas
12000 for the year 20162.
10000
GWh
8000
6000
4000
2000
0
2012 2013 2014 2015 2016
Russia Algeria Austria Italy Other
Figure 2. Sources of natural gas supply to Slovenia
100%
Through the interconnection
point Ceršak, the TSO can supply
90%
all Slovenian consumers,
80%
regardless of their location. This
70% is also reflected in the positive
60% trend of increasing the share of
50% supply via the Ceršak point in
40% Figure 3. The suppliers can
30% therefore provide a competitive
supply for all consumers where
20%
this is not restricted by an
10%
interconnection point or a
0%
possible bottleneck on the
2012 2013 2014 2015 2016
natural gas transmission
Povezovalna točka
Interconnection Ceršak
point Ceršak Povezovalna
Interconnectiontočka Šempeter
point Šempeter
network.
Figure 3. Natural gas import routes to Slovenia
3.2.2 Slovenian Energy Concept − orientations
The Slovenian Energy Concept (Energetski koncept Slovenije – EKS) is in preparation. In accordance
with the Energy Act (EZ-1, Official Gazette of RS, Nos. 17/2014 and 81/2015) and the projection of
economic, environmental and social development of the country and along with the adopted national
commitments, particularly those related to energy and climate, it will provide a basis for identifying
ways for their achievement in the future.
2
https://www.agen-rs.si/documents/10926/38909/Pomembnej%C5%A1i-kazalniki-na-podro%C4%8Dju-oskrbe-z-elektri%C4%8Dno-energijo-in-
zemeljskim-plinom-v-letu-2016/82f7747a-e5a4-4955-9db7-3113e6ee067d
9
Ten-Year Gas Transmission Network Development Plan for the 2018 - 2027 Period
The consultation document presented by the Ministry of Infrastructure (MoI) at the beginning of the
consultation process in May 20153 outlines the key elements for directing Slovenia's transition into a
low-carbon society, to which RS has already agreed in the past when adopting national commitments
within international obligations.
As an energy product, compared to the European average, natural gas has a much more modest
representation in the national energy balance sheet, with the exception of industrial consumers sector.
From responses to the material that the MoI has prepared on the subject of EKS so far and from last
year's discussions on energy sources 4 it can be summarised that natural gas will keep playing an
important role in the energy sector in the future. In the discussions, natural gas has been recognised as
an important energy product that is important for district heating systems and for individual energy
systems. Natural gas is classified as low carbon fuel, since it produces a negligible amount of dust
particles and substantially fewer emissions (CO, NOx, etc.) than in fuel oil, gasoline and diesel,
petroleum gas and biomass5. In order to achieve the national objectives of greenhouse gas emissions6 it
will have to replace coal in district heating systems in at least the next five years and gradually
replace fuel oil as well. Natural gas plays a special role in transport in two directives 7,8 that describe it
as an alternative fuel to fossil fuels in transport. In accordance with the aforementioned directive, a
national strategy9 for the required infrastructure should already be prepared in the current year.
Development of the transmission system is crucial and directed towards expanding the networks and
establishing more efficient connections with distribution systems and the neighbouring transmission
systems in the region. There is no doubt that the national energy-climate goals can only be achieved
through the efficient use of several energy products, therefore combining the functions of their
transmission systems and distribution systems or district heating systems. A higher degree of
gasification in the country would contribute to this goal. The TSO is striving to develop and upgrade
the system to increase the level of diversification, i.e. obtaining new sources through new routes,
including the LNG (liquefied natural gas) terminals and access to natural gas storage facilities.
3.2.3 Existing supply of transmission capacity as of 1 January 2017
The TSO publishes the data on transmission capacity of the gas transmission network for relevant
points that are shown in Figure 4 and confirmed by the Energy Agency. Five relevant points are
displayed, four of which are cross-border interconnection points and relevant points for the publication
of data, while the fifth relevant point is aggregate information on the combined exit/transmission for
users in the Republic of Slovenia.
3
http://www.energetika-portal.si/dokumenti/strateski-razvojni-dokumenti/energetski-koncept-slovenije/posvetovalni-proces-eks/
4
http://www.energetika-portal.si/fileadmin/dokumenti/publikacije/eks/posvetovanje_delavnice/izvlecki_komentarjev_jun_2016.pdf
5
http://www.giz-dzp.si/zemeljski-plin/okoljske-prednosti/
6
http://www.energetika-portal.si/dokumenti/strateski-razvojni-dokumenti/operativni-program-ukrepov-zmanjsanja-emisij-tpg/
7
DIRECTIVE 2012/33/EU OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 21 November 2012 amending Council Directive 1999/32/EC as
regards the sulphur content of marine fuels
8
DIRECTIVE 2014/94/EU OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 22 October 2014 on the deployment of alternative fuels
9
http://www.mop.gov.si/fileadmin/mop.gov.si/pageuploads/javna_narocila/2016/studija_potrebnih_dodatnih_ukrepih/Obrazec_3_projektna_nalo
ga.pdf
10Ten-Year Gas Transmission Network Development Plan for the 2018 - 2027 Period
relevant point
compressor st.
M1 area
M2 area
M3 area
M4 area
Figure 4. Schematic map of the gas transmission system with relevant points
Table 4 presents data on the capacity of the relevant points as of 1 January 2017, the total
contractually booked capacity and utilisation for different periods.
Table 4. Capacity of the gas transmission system on relevant points 10
Average Maximum
Total Maximum daily
monthly monthly
Technical contractually utilisation of
Relevant point utilisation of utilisation of
capacity booked technical
technical technical
capacity capacity
capacity capacity
million kWh/day million kWh/day % % %
80.8 (17 November
Ceršak − entry 139.757 93.580 45.5 (year '16) 61.8 (Dec. 2016)
2016)
72.4 (24 December
Rogatec − exit 68.584 51.381 55.4 (year '16) 69.1 (Dec. 2016)
2016)
Šempeter − entry 28.474 4.350 47.1 (25 July 2016) 0.5 (year '16) 6.3 (Jul. 2016)
99.1 (17 November
Šempeter − exit 25.885 0 0.7 (year '16) 6.3 (Nov. 2016)
2016)
61,0 (22 December
Exit in RS 73.761 61.651 34.6 (year '16) 51.8 (Dec. 2016)
2016)
By monitoring the demand for additional capacity on the domestic gas market and the demand for
cross-border transmission capacity and in accordance with the requirements for ensuring a secure
supply of natural gas, the TSO is obliged to develop the transmission system to ensure all of this.
Pursuant to Regulation No. 715/2009/EC, the TSO must provide system users their separate use of
transmission capacity at all entry and exit points to the system (as per the so-called system of entry-
10
The capacity data refer to 1 January 2017, while the technical capacity utilisation data refer to the year 2016.
11Ten-Year Gas Transmission Network Development Plan for the 2018 - 2027 Period
exit points). To ensure successful operation of the entry-exit points system, the TSO must provide
appropriate technical conditions such as the elimination of bottlenecks on the transmission system in
order to enable suitable marketing and booking of capacity under this method and to allow the booking
of capacity at entry and exit points in various combinations.
With the introduction of transmission capacity booking via the auction platform PRISMA and with the
implementation of a virtual point in Slovenia, there was greater dynamics of both the booking of
transmission at the cross-border interconnection points and the transmitted quantities.
3.2.4 Infrastructure standard and compliance with Regulation 994/2010/EU
The Regulation (EU) 994/2010 of the European Parliament and the Council concerning measures to
safeguard security of gas supply introduces the so-called "infrastructure criterion N-1" stipulating for
the subject geographic area that in the event of interruption on an individual largest gas infrastructure
there must be sufficient technical capacity available to meet the entire daily demand for gas, even in
cases of exceptionally high demand (peak consumption).
By 3 December 2014, Member States were obliged to adopt and implement measures to meet the
infrastructure criterion N-1. When preparing the Regulation 994/2010/EU, The European Commission
has taken into account that the circumstances in Slovenia are rather specific compared to other
Member States. Slovenia has no natural gas storage facilities or liquefied natural gas plants and in
addition to that, the Slovenian transmission system is connected to foreign transmission systems in only
three handover points. For these reasons, Slovenia (along with Luxembourg and Sweden) is an
exception and therefore not obliged to meet the criterion N-1. This exception applies as long as
Slovenia maintains at least two interconnectors with other Member States, at least two different
supply sources and no natural gas storage facilities or liquefied natural gas plants. Under Regulation
994/2010/EU of the European Parliament and the Council, Slovenia is obliged to submit a report to the
European Commission by 3 December 2018 describing the circumstances regarding infrastructure
criterion N-1. On the basis of that report and as long as the conditions for exemption continue to be
fulfilled, the European Commission may decide to extend the validity of the exception.
When dealing with transmission capacities at cross-border interconnection points, the analysis of the
infrastructure standard was adjusted for the last Risk assessment for security of supply, prepared by
the competent authority (Energy Agency), and for the Ten-Year Network Development Plan 2018 −
2027 in the light of analyses in the previous years. When calculating the infrastructure standard, only
the firm transmission capacities were taken into account as technical capacities of cross-border
interconnection points, without taking into account the possible specific measures of the transmission
system operator to provide additional interruptible transmission capacity in the event that supply
security is threatened. The technical capacities of the subject cross-border interconnection points are
defined on the basis of flow-pressure calculations of the transmission system, taking into account the
technical capacities of all the transmission system components included in the transmission (gas
pipelines, metering and regulation stations, and the two compressor stations), as well as the
operational characteristics and operational boundary conditions of the transmission system as a whole.
The estimations of value increments of infrastructure criterion N-1, inter alia, also depend on the
estimated growth of the peak load of the system. In the estimation of the development of peak load of
the Slovenian transmission system it was taken into consideration that the peak load will increase in
the coming years due to the growth of wide consumption.
12Ten-Year Gas Transmission Network Development Plan for the 2018 - 2027 Period
Based on the analysis of prospective infrastructure projects, the TSO has estimated that the
infrastructure standard N-1 will range between 57.4% and 56.8% in the next two years. In the long
term, the TSO estimates that it can ensure the development of infrastructure standard N-1 for the
Slovenian transmission system in a manner that will allow the system to reach the required level of
100%.
140,0
112,5 116,3 115,2 114,0 112,9
120,0 111,4 111,8 110,7 109,6
100,0
80,0
57,4 56,8
60,0
40,0
20,0
0,0
2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027
Figure 5. Estimation of infrastructure criterion N-1 development for the Slovenian transmission
system
As the TSO, the company Plinovodi will be able to meet the requirements of the infrastructure
criterion N-1 in the long term by:
1. establishing entry capacities and therefore enabling physical flow from the direction of
Croatia via the cross-border interconnection point Rogatec (planned in 2019);
2. an additional connection of the Slovenian transmission system to neighbouring systems that
could be realised within the Hungary connection project (planned in 2021).
The development of the infrastructure criterion N-1 in the coming years will be strongly influenced by
the development of the peak load of the system, which the criterion defines as "the entire daily
demand for gas on a day of exceptionally high demand for gas". In the estimation of the influence of
peak load development on the infrastructure criterion N-1 it was taken into consideration that the
peak load of the system will increase in the coming years due to the growth of the wide consumption
peak. The development of peak load in Slovenia will also depend on the booking of transmission
capacities for gas power stations.
Pursuant to Article 7 of Regulation 994/2010/EU, the TSOs must implement a procedure for enabling
bi-directional capacity or for exemption from the obligation of enabling bi-directional capacity for
each cross-border interconnection between Member States:
1. Enabling bi-directional capacity at cross-border interconnection Šempeter/Gorica
With the successful completion of the investment cycle on 1 January 2015 the TSO Plinovodi
enabled bi-directional capacity at cross-border interconnection Šempeter/Gorica where bi-
13Ten-Year Gas Transmission Network Development Plan for the 2018 - 2027 Period
directional booking of transmission capacity and bi-directional operation of the transmission
system was taking place in 2015 and 2016.
2. Exemption for reverse flow capacity for cross-border interconnection Murfeld/Ceršak
The TSO Plinovodi obtained the exemption from obligation of enabling bi-directional capacity
at the cross-border interconnection Murfeld/Ceršak in accordance with the 4th paragraph of
Article 7 of the Regulation 994/2010/EU without restrictions. Article 7 of the Regulation
994/2010/EU defines the repeat process for "enabling reverse flow capacity or exemption" on
the basis of Risk assessment for security of supply, which is carried out every 2 years in
accordance with Article 9 of the Regulation 994/2010/EU. The latest Risk assessment by the
Slovenian competent authority for security of supply that was carried out in 2014 in both
Austria and Slovenia has so far not indicated the need for enabling bi-directional capacity at
the cross-border interconnection Murfeld/Ceršak.
3. Exemption for reverse flow capacity for cross-border interconnection Rogatec
Based on the Risk assessment for security of supply, the TSO Plinovodi submitted the
application for exemption from the obligation of enabling bi-directional capacity with the
possibility of reverse flow from Croatia to Slovenia in 2016. It obtained the exemption for
cross-border interconnection Rogatec until 31 December 2018.
The risk assessment has taken into account that reverse flow capacity at cross-border interconnection
Rogatec could affect the infrastructure standard of the Slovenian gas transmission system, but not
before the Croatian transmission system is upgraded with compressor capacities for transmission of gas
to cross-border interconnection Rogatec and for ensuring the necessary pressure conditions at this
interconnection point, which would according to the time frame for the upgrade of Croatian
transmission system be possible at the end of 2018 at the earliest.
The technical solution to provide bi-directional capacity with reverse flow in Rogatec depends on the
size of the requested transmission capacity. The most basic scenario would require an upgrade of the
border metering and control station in Rogatec on the part of Slovenian TSO and an upgrade of the
transmission system with compressor capacities on the part of Croatian operator.
In the company Plinovodi we actively participate in all activities in the region related to the
development of new or existing transmission directions. For the existing transmission direction Austria
− Slovenia − Croatia, an analysis and technical design was performed to establish bi-directional
capacities in the direction Rogatec − Ceršak (the project of the conceptual solution "Transmission
pipeline M1 Ceršak − Rogatec and M1/1 Ceršak − Rogatec, Enabling bi-directional capacities with
reverse flow", manufactured by IBE d.d., January 2015). In 2017, the increased capacity for the cross-
border interconnection Murfeld/Ceršak is performed in cooperation with the Austrian transmission
system operator Gas Connect Austria, via an auction of bi-directional capacities. Other activities for
enabling bi-directional flows are also included in the development plan of the company Plinovodi,
where the upgrades of the transmission system at the border metering and control station Rogatec, at
the compressor station in Kidričevo, and at the border metering and control station Ceršak are
planned.
We are just awaiting the publication of the new European Regulation 994/2010/EU concerning
measures to safeguard security of gas supply, which builds on the substance in the preparation of the
14Ten-Year Gas Transmission Network Development Plan for the 2018 - 2027 Period
Risk assessment, as well as in the field of implementation of preventive measures and measures in the
event of an emergency. The requirements of the new regulation will be taken into account in the
preparation of the following Risk assessment and Acts for securing the supply of natural gas.
3.2.5 Supply and demand for transmission capacity – territorial coverage
As of 1 January 2017, the TSO had transmission contracts concluded with 147 system users, namely
14 DSOs operating in 81 municipalities, 131 industrial or commercial consumers and two power
stations.
Figure 6. Regional availability of the gas transmission network
The connection to natural gas can be performed in 81 Slovenian municipalities, which have an
operating gas network and in which 14 distribution system operators provide natural gas supply.
Based on the assessment of the potential of natural gas consumption, the distance of the municipality
from the transmission system, the estimation of the value of the connection implementation, and the
informative calculation of economic viability, the TSO estimates that there are 68 more municipalities
where the implementation of the connection is reasonable.
In addition to households, for which the DSO would construct a network in densely populated locations,
the other critical factor to decide whether to connect a local community to the transmission network is
the transition of other industrial and commercial users to natural gas (schools, kindergartens, hotels,
hospitals, stores, crafts and the like). The connection projects are divided into municipalities that
could connect through existing MRSs, municipalities to which it would be necessary to construct a
connection pipeline and a new MRS and municipalities whose connection depends on a previously
constructed longer system pipeline.
15Ten-Year Gas Transmission Network Development Plan for the 2018 - 2027 Period
Table 5. Regional availability of the gas transmission network and local communities with potential
connections
Local communities with potential connections and infrastructure
required
Statistical region Municipalities with DSO New constructions:
New constructions:
Use of longer system
existing MRS connection pipelines
pipelines, connection
and MRSs
pipelines and MRSs
1 Pomurska Beltinci, Gornja Radgona, Apače, Črenšovci,
Lendava, Ljutomer, UM Križevci, Moravske
Murska Sobota, Odranci, toplice, Puconci,
Radenci, Turnišče, Razkrižje, Tišina, Velika
Dobrovnik Polana, Veržej
2 Koroška Dravograd, Mežica, Muta, Mislinja Muta, Vuzenica,
Prevalje, Ravne na Radlje ob Dravi
Koroškem, UM Slovenj
Gradec
3 Podravska Hoče – Slivnica, UM Maribor, Dornava, Gorišnica, Lenart
Miklavž na Dravskem polju, Markovci, Duplek,
Ormož, UM Ptuj, Rače – Hajdina, Kidričevo,
Fram, Ruše, Slovenska Majšperk, Pesnica,
Bistrica, Selnica ob Dravi, Oplotnica, Videm
Središče ob Dravi, Starše,
Šentilj
4 Savinjska UM Celje, Laško, Polzela, Braslovče, Šmartno ob
Prebold, Radeče, Rogaška Paki, Kozje, Ljubno,
Slatina, Rogatec**, Nazarje, Mozirje,
Slovenske Konjice, Šentjur, Podčetrtek, Šmarje pri
Štore, Šoštanj, UM Velenje, Jelšah, Vransko
Vojnik, Zreče, Žalec
5 Zasavska Hrastnik, Zagorje ob Savi Trbovlje
6 Spodnje- Brežice, Krško, Sevnica
posavska
7 Osrednje- Brezovica, Dobrova – Polhov Borovnica, Horjul, Grosuplje, Ivančna
slovenska Gradec, Dol pri Ljubljani, Lukovica, Moravče gorica, Velike Lašče
Domžale, Ig, Kamnik,
Komenda, Litija, UM
Ljubljana, Logatec, Log –
Dragomer, Medvode,
Mengeš, Škofljica, Trzin,
Vodice, Vrhnika
8 Notranjsko- Cerknica, Ilirska
kraška Bistrica, Pivka,
Postojna
9 Gorenjska Bled, Cerklje na Kranjska Gora Žiri
Gorenjskem, Jesenice, UM
Kranj, Naklo, Gorje,
Radovljica, Šenčur, Škofja
Loka, Tržič, Žirovnica
10 Goriška Ajdovščina, Nova Gorica, Miren – Kanal Idrija*
Šempeter – Vrtojba, Vipava Kostanjevica,
Renče –
Vogrsko
11 Obalno-kraška Sežana** Hrpelje – Kozina,
Ankaran, UM Koper*,
Izola, Piran
12 Jugovzhodna UM Novo mesto Dolenjske Šentjernej, Škocjan Kočevje, Ribnica,
Slovenija Toplice, Sodražica, Črnomelj,
Straža Metlika, Semič,
Trebnje, Mirna
Total Existing situation: 81 Possible increase in gas transmission network coverage for 68
municipalities with a potentially connectable municipalities
distribution network
*The municipality already has a chosen DSO.
**DSO is connected to the system in the neighbouring country.
16Ten-Year Gas Transmission Network Development Plan for the 2018 - 2027 Period
3.2.6 Comparison of the role of natural gas in Slovenia and Europe
40% The Slovenian energy market is
35%
significantly different from the EU-28
average in three out of five elements,
30% namely: natural gas, renewable
25% sources, and nuclear heat. The share
20% of natural gas in primary energy in the
EU-28 countries is 2.3-times higher
15%
than in Slovenia, while the shares of
10% renewable sources and nuclear heat
5% are significantly higher in Slovenia.
0%
Trdna
Solid goriva Oil products
fuels Naftni Zemeljski
Natural gasplin Nuclear
Jedrska heat
toplota Obnovljivisources
Renewable viri
proizvodi Data source:
http://ec.europa.eu/eurostat/web/e
Evropska
EU-28 unija 28 Slovenija
Slovenia
nergy/data/main-tables
Figure 7. Primary energy in EU-28 and Slovenia in 2014
40% In Slovenia, the highest share was
reached in 2009 − 14.5% and it has
35% been dropping ever since. In the
30%
primary energy consumption
structure in Slovenia, natural gas
25% represents a 9% share, while the
average value for the EU countries is
20%
21%.
15%
10%
Data source:
http://ec.europa.eu/eurostat/web/e
5% nergy/data/main-tables
0%
DE
AT
DK
AL
HU
HR
ES
NL
EE
IT
NO
EL
IE
SK
PT
CZ
PL
CY
RO
RS
SI
SE
FI
UK
LT
BE
LV
EU28
LU
BG
FR
MK
ME
MT
Figure 8. The share of natural gas in primary energy in EU
countries (data for 2014, refreshed in 2016)
17Ten-Year Gas Transmission Network Development Plan for the 2018 - 2027 Period
Non-energy Energy sector
consumption 0% RES Solid fuels
Oil products
1% Heat 10% 3%
7%
Other 4%
consumption Industry
11% 25%
Households
24%
Electricity Natural gas
Traffic 41% 35%
39%
Figure 9. Energy consumption by sector (2016) Figure 10. Energy sources in industry (2016) in
in Slovenia (Data source: RS energy balance sheet Slovenia (Data source: RS energy balance sheet
2016) 2016)
Solid fuels
0% Oil products
Solid fuels 13%
12% Natural gas
10%
Natural gas RES
12% 45%
Electricity
24%
Oil products
76% Heat
8%
Figure 11. Non-energy consumption (2016) in Figure 12. Energy sources in households (2016)
Slovenia (Data source: RS energy balance sheet in Slovenia (Data source: RS energy balance sheet
2016) 2016)
In the year 2016, the largest share of energy consumption was in traffic. Industry and households
represent an important segment of energy consumption as well. These three sectors have consumed
nearly 89% of all energy, with the remaining 11% in other consumption, non-energy consumption and
the energy sector. In Slovenian industry in 2016, natural gas represented 35% of consumption. One of
the most suitable uses for natural gas lies in households, since it is easy to use, safe, as well as the
most environmentally friendly and competitive. There are several reasons for its small share (10%) in
Slovenia, the relatively small geographic coverage
In comparison with 2016, the energy distribution by sector in Slovenia in the year 2006 was: industry
25% (last year 33%), traffic 39% (last year 30%), households 24% (last year 23%), other consumption 11%
(last year 10%), non-energy consumption 1% (last year 4%).
18Ten-Year Gas Transmission Network Development Plan for the 2018 - 2027 Period
300.000
According to the RS energy balance
sheet, the final energy consumption in
250.000 the year 2016 amounted to 198,294TJ,
which is 26.3% lower than ten years ago
200.000
(2006):
150.000 reduced by 33.7% in industry,
increased by 17.3% in traffic,
100.000 2006 reduced by 4% in households,
50.000 2016 increased by 68.7% in other
consumption,
0 reduced by 79.4% in non-energy
Traffic
Industry
Households
Total
consumption
consumption
Other
Non-energy
consumption; one of the biggest
reasons is the decommissioning of
the methanol plant in Lendava.
Figure 13. Energy consumption in 2006 and 2016
Slovenia is comparable to other EU-28
countries when it comes to the
50% consumption of natural gas in industry
45% (with a 32% share). The reduction in
40%
energy consumption in the last ten years
affected all energy sources, so natural
35%
gas retained a relatively high share.
30%
25% Data source:
20% http://ec.europa.eu/eurostat/web/ene
15% rgy/data/main-tables
10%
5%
0%
AT
AL
ES
DE
DK
HR
EE
NL
CZ
HU
IT
PL
SK
PT
EL
NO
CY
SE
RO
TR
SI
IE
RS
FR
FI
LU
BE
EU28
UK
BG
LT
LV
MK
ME
MT
Figure 14. Share of natural gas among the energy sources in
industry (data for 2014, refreshed in 2016)
Increasing the share of natural gas
consumption in households is a lengthy
80% process. In Slovenia, the biggest
competitors are renewable energy
70%
sources (mainly wood biomass in various
60% forms) and electricity for heat pumps.
50%
Data source:
40% http://ec.europa.eu/eurostat/web/ene
rgy/data/main-tables
30%
20%
10%
0%
DE
AT
DK
AL
HU
ES
HR
NL
CZ
IE
EE
SK
IT
PL
PT
EL
SE
NO
CY
RO
SI
BE
FR
LV
RS
UK
LU
LT
FI
EU28
BG
MK
ME
MT
Figure 15. Share of natural gas among the energy sources in
households (data for 2014, refreshed in 2016)
19Ten-Year Gas Transmission Network Development Plan for the 2018 - 2027 Period
100% In the year 2013, the consumption of
90%
natural gas in conventional thermal
power stations in Slovenia amounted to
80%
7,674.7GWh, but in the year 2014 it
70% dropped to 788.3GWh (90% drop).
60%
50% Data source:
40% http://ec.europa.eu/eurostat/web/ene
30% rgy/data/main-tables
20%
10%
0%
AT
HR
AL
HU
DE
DK
EE
ES
IE
IT
PT
EL
NL
NO
RO
CZ
SI
CY
SK
PL
SE
RS
FR
LU
LT
FI
LV
BE
BG
UK
EU28
MK
ME
MT
Figure 16. Share of natural gas among the energy sources in
conventional power stations (data for 2014, refreshed in 2016)
3.2.7 Natural gas consumption in the country in the 2008 – 2016 period
The past consumption of natural gas represents one of the indicators used to forecast the booking of
transmission capacity. In the year 2014, we have seen a large drop in consumption of natural gas,
especially in the electricity production sector. The consumption of natural gas in the industrial sector
has stabilised in the period from 2012 to 2014, which suggests that the economic conditions have
settled down somewhat, and in 2015 there has been an increase in natural gas consumption in the
industry segment of about 6%, and then in 2016 the additional 2.5%. In the other consumption segment,
the TSO has been noticing a decline in natural gas consumption until 2014, which the TSO attributes
mostly to installation of efficient facade insulations, new energy-efficient windows and other
structural elements that contribute to lower consumption of energy products for heating, as well as
extremely mild winters, but in 2015 an increase in natural gas consumption has been noticed in the
other consumption segment as well, approximately 13%, and the additional 7.5% in 2016. Therefore, a
total increase of about 4.5% has been recorded in the consumption of natural gas quantities in 2016 in
comparison with the year 2015, and as much as 14% in comparison with the year 2014. Regardless of
the annual volume of natural gas consumed, from the TSO's perspective, the key is the capacity booked
on the level of daily consumption, required for the transmission of natural gas to supply the network
users, which remains at about the same level during peak loads.
Table 6. Natural gas consumption in Slovenia in the 2008 – 2016 period (million kWh/year)
Sector 2008 2009 2010 2011 2012 2013 2014 2015 2016
Industry 7,166 6,269 6,611 5,073 4,774 4,774 4,774 5,064 5,187
Other
3,930 3,781 3,845 3,973 3,813 3,546 3,311 3,767 4,058
consumption
Electricity 331 758 705 566 619 545 43 38 30
Total 11,427 10,808 11,161 9,612 9,206 8,865 8,128 8,869 9,275
20Ten-Year Gas Transmission Network Development Plan for the 2018 - 2027 Period
12.000
10.000
8.000
mio kWh 6.000
4.000
2.000
0
2008 2009 2010 2011 2012 2013 2014 2015 2016
Year
Industrija
Industry Ostala
Otherporaba
cons. Elektrika
Electricity
Figure 17. Natural gas consumption in Slovenia in the 2008 – 2016 period (million kWh/year)
3.2.8 Demand and anticipated supply of transmission capacity
3.2.8.1 Connection contracts
Table 7 includes the projects for the future users of transmission capacity who have concluded a
connection contract with the TSO and are envisaged for implementation in the coming period.
Table 7. Connection contracts
# Project name Purpose Planned start of operations
MRS TE-TOL;
B1 M5 Vodice − Jarše, R51 Jarše − Connection of thermal energy plant 2020
TE-TOL
MRS Godovič;
B2 Connection of DSO in the municipality of Idrija 2018
R38 Kalce − Godovič
B9 MRS Lendava/Petišovci Connection to the production of natural gas 2019
B15 MRS Impol Adjustment to the demand characteristics of the 2021
user
B17 MRS Knauf Capacity increase for industrial consumer 2018
3.2.8.2 Connection approvals
Table 8 includes projects for users of transmission capacities who were issued connection approvals
and their 2-year validity has not expired yet and connection contracts have not been concluded with
them yet. Also displayed are the projects for which the users have submitted the application for
approval and are in the phase of issuing the connection approval.
21Ten-Year Gas Transmission Network Development Plan for the 2018 - 2027 Period
Table 8. Connection approvals
# Project name Purpose Planned start of operations
B11 MRS Nasipi Trbovlje Connection of user and DSO 2019
B12 MRS Golnik Connection of DSO 2017/2018
Adjustment to the demand characteristics of the
B13 MRS Brestanica 2018/2019
power station (stage one)
B16 CNG MS Celje Connection of CNG filling station 2018
B18 MRS Miklavž na Dravskem polju Connection of DSO 2018
MRS IZ Hoče;
B45 Connection of DSO 2018
R13c Miklavž − Hoče
B25 MRS Rogatec ŠP Connection of DSO 2017/2018
B40 MRS Šobec Connection of DSO and/or user 2017/2018
B46 MRS Verovškova Connection of DSO 2017/2018
3.2.8.3 Queries
Queries include the initial activities of our company, potential users and existing users of transmission
capacities for connections that the TSO recorded as current and were addressed as queries in 2016.
This group also includes the previous activities of potential users for which a connection approval had
been issued, but has expired for various reasons and, hence, no connection contract has been
concluded, yet the TSO still considers them as possible customers. For the following projects, the TSO
considers that the potential or existing users have expressed interest for connections.
Table 9. Queries
# Project name Purpose Planned start of operations
B19 MRS Bela 2021
Connection of DSO and industrial users;
B20 MRS Halda connection with the system pipeline point 2021
A18
B21 MRS Desni Breg 2021
Connection of DSO; connection with the
B47 MRS Kranjska Gora nd
system pipeline point A18
Connection of DSO in the municipalities of
MRS Sežana, MRS Kozina, MRS
Sežana, Hrpelje − Kozina, Koper, Izola,
B3 Dekani, MRS Koper, MRS Izola, MRS after 2020
Piran; connection with the system pipeline
Lucija
M6
MRS Cerklje; Connection of DSO in the municipality of
B4 nd
R297B Šenčur − Cerklje Cerklje
MRS TTPP;
B5 Connection of thermal power station nd
R25A/1 Trojane − TTPP
B7 MRS Cerknica Connection of DSO and industrial users nd
Connection of users with CNG filling
B8 CNG MS/MRS 2018 − 2027
stations
Connection of new users with mobile
Supply to users (Table 5) and other systems and adjustment of existing
B14 2018 − 2027
connection projects connection points
B27 MRS Šmarje pri Jelšah Connection of DSO 2018
B37 MRS Lukovica Connection of DSO nd
B42 MRS Horjul Connection of DSO nd
22Ten-Year Gas Transmission Network Development Plan for the 2018 - 2027 Period
Connection of municipality Škocjan and
B43 MRS Škocjan/Šentjernej 2019
Šentjernej
Adjustment to the demand characteristics
B44 MS Kandija nd
of the consumer
Adjustment to the demand characteristics
B23 MS Primorje CGM nd
of the consumer
B24 MS Labore Connection of DSO for industrial consumer nd
Connection of DSO in the municipality of
B10 MRS Marjeta nd
Starše
B26 MRS Pesnica Connection of DSO nd
B22 MRS Šoštanj Connection of new industrial consumers nd
Adjustment to the demand characteristics
B33 MRS Štore nd
of the user
B30 MRS Videm Connection of DSO nd
B31 MRS Kidričevo Connection of DSO nd
B32 MRS Sveti Tomaž Connection of DSO nd
Adjustment to the demand characteristics
B46 MRS Verovškova 2017/2018
of the user
Adjustment to the demand characteristics
B48 MRS Gorenje 2017/2018
of the user and connection of DSO
Adjustment to the demand characteristics
B49 MRS Trbovlje 2017/2018
of the user
Adjustment to the demand characteristics
B50 MRS Novo Celje nd
of the user
Adjustment to the demand characteristics
B51 MRS Krško nd
of the user
Adjustment to the demand characteristics
B52 MRS Solkan 2017/2018
of the user
B53 MRS Opekarna (Straža) Connection of new industrial consumers 2017/2018
B54 MRS Podčetrtek Connection of users nd
B55 MRS Kozje Connection of users nd
B56 MRS Vransko Connection of users nd
B57 MRS Borovnica Connection of users nd
* In addition to the station, each MS/MRS also includes a pipeline connecting the station to the transmission pipeline.
3.2.8.4 Potential connections
Potential connections are projects that the TSO estimates will need to be carried out considering the
expected development of the transmission system, distribution systems and users' needs for
connections to the transmission system in the next ten-year period, but the interest for connection has
not yet been expressed by existing or potential users, or has ceased.
Table 10. Potential connections
# Project name Purpose Planned start of operations
Connection of DSO in the
MRS Grosuplje, MRS Ivančna Gorica, municipalities of Grosuplje, Ivančna
B34 MRS Trebnje, MRS Mirna Peč, MRS Gorica, Trebnje, Mirna Peč, Mirna; nd
Mirna connection with the system pipeline
M5
MRS Semič nd
Connection of DSO; connection with
B41 MRS Metlika nd
the system pipeline R45
MRS Črnomelj nd
B28 MRS Oplotnica Connection of DSO nd
MRS TOŠ;
B6 Connection of thermal energy plant nd
R52 Kleče − TOŠ
23Ten-Year Gas Transmission Network Development Plan for the 2018 - 2027 Period
B36 MRS Komenda Connection of DSO nd
B35 MRS Škofljica/Ig Connection of DSO nd
B38 MRS Brezovica/Log Dragomer Connection of DSO nd
B29 MRS Braslovče Connection of DSO nd
B58 MRS Šmartno ob Paki Connection of DSO nd
3.2.8.5 Deployment of alternative fuels infrastructure
The purposes of Directive 2014/94/EU on the deployment of alternative fuels infrastructure are
minimising the dependence on oil and mitigating the environmental impact of transport, and it opens
up new opportunities for natural gas in road and maritime transport.
The natural gas transmission system with the requisite development can represent an important
support infrastructure for transport, which is why we are co-developing the national framework in the
direction where natural gas in transport is first attributed adequate relevance due to its positive role
that is already proving in many cases of good practice to reduce emissions of particulate matter and to
a lesser extent CO2, and afterwards, that it becomes interesting for users, if necessary with the help of
suitable financial incentives.
Projects within the framework of alternative fuels infrastructure are discussed in Point B8 CNG MS/MRS
(connection of users with CNG filling stations).
The national strategy for the development of alternative fuels infrastructure, dictated by the Directive
2014/94/EU, is currently under preparation and will be adopted by the Government of Republic of
Slovenia expectedly in October 2017.
3.2.9 Forecast of natural gas consumption and booking of transmission capacity
for the 2018 – 2027 period
The forecast of booking of transmission capacity of the system operator is a key element of the review
of future development of the natural gas market and it is based on numerous elements that the
transmission system operator includes in the preparation of the forecast, namely:
the concluded contracts for the connection to the natural gas transmission system and transmission
contracts,
the demands received from existing and potential network users,
past experiences with transmission system users and implementation of TSO's activities in terms of
new connections,
forecasts for the construction of power facilities,
estimated transition of system users to the increasingly higher use of short-term transmission
capacity,
prepared estimates of transmission capacity booking from the Requirement to issue consent to the
regulatory framework, tariff items for network charges and tariff items for other services for the
regulative period from 1 January 2016 to 31 December 2018, and
the estimates and forecasts that the ENTSOG prepares and uses in the preparation of the TYNDP
(ENTSOG has included various scenarios in the methodology for the last TYNDP 2017, and the
company Plinovodi pursued the goal of steady growth in the consumption of natural gas).
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