SUNNY DESIGN - User Manual

SUNNY DESIGN - User Manual

SUNNY DESIGN - User Manual

SD3-SDW-BA-en-21 | Version 2.1 ENGLISH User Manual SUNNY DESIGN

Legal Provisions SMA Solar Technology AG User Manual SD3-SDW-BA-en-21 2 Legal Provisions The information contained in these documents is the property of SMA Solar Technology AG. Any publication, whether in whole or in part, requires prior written approval by SMA Solar Technology AG. Internal reproduction used solely for the purpose of product evaluation or other proper use is allowed and does not require prior approval. Software licenses The licenses for the used software modules can be called up on the user interface of the product. Trademarks All trademarks are recognized, even if not explicitly identified as such. Missing designations do not mean that a product or brand is not a registered trademark.

Copyright The "Sunny Design Web" software was developed by SMA Solar Technology AG and is copyright protected. It is provided to the user free of charge and for an unlimited period. Inverter data The employed technical data of the SMA inverters is continuously checked and, if necessary, adapted. However, discrepancies and mistakes may still arise. We accept no responsibility for the completeness and/or correctness of the data (The values do not represent guaranteed characteristics). PV Module Data The employed technical data of the solar panels is based on the publicly accessible information of the respective manufacturers. SMA has integrated the available data into the software with the greatest care possible. The content of this software is monitored in an ongoing manner and updated when necessary. However, deviations cannot be excluded. We cannot accept responsibility that the data is up-to-date, correct and complete as it is subject to frequent modifications.

Solar Irradiation Data This data has been given to SMA from several institutions and is allowed to be used in this program. Therefore, SMA does not take any liability for completeness and/or correctness of this data. Warranty and Liability Since the software is provided to the user free of charge, SMA can accept no responsibility for its proper operation, for its suitability for certain purposes, or for the non-violation of any rights of third parties. The software is used at the user's risk and responsibility. SMA is only liable in case of wrongful intent and gross negligence. In particular, SMA does not accept any liability for defects and consequential damage, for incorrect profit calculations, for loss of profits, for loss of use, for damage to used hardware, for loss of data, for interruption of operation or other damage. Status: 6/18/2018 Copyright © 2018 SMA Solar Technology AG. All rights reserved.

Table of Contents SMA Solar Technology AG User Manual 3 SD3-SDW-BA-en-21 Table of Contents 1 Information on this Document . 5 1.1 Validity . 5 1.2 Target Group . 5 1.3 Symbols in the Document . 5 1.4 Typographies in the document . 6 1.5 Designation in the document . 6 1.6 Additional Information . 6 2 Product Overview . 7 2.1 Product Description . 7 2.2 Functions . 8 2.3 System Requirements . 9 3 Setup and start . 10 3.1 Registering for Sunny Design . 10 3.2 Start Sunny Design Web . 10 3.3 Installing and starting Sunny Design Desktop Version . 10 4 User Interface . 12 4.1 Personal Homepage After Login . 12 4.2 Project pages . 13 4.3 Project tree . 14 5 General Operation . 15 5.1 My Sunny Design . 15 5.1.1 Make the settings . 15 5.1.2 Creating and Managing own PV Modules . 16 5.1.3 Entering Prices for PV Modules . 17 5.1.4 Entering Prices for Inverters . 17 5.1.5 Create and manage your own locations . 18 5.1.6 Own Load Profiles . 19 5.1.6.1 Importing Own Consumption Data . 19 5.1.6.2 Importing Consumption Data from Sunny Portal . 20 5.1.6.3 Creating Consumption Data manually . 20 5.1.6.4 Deleting Own Load Profile . 21 5.1.7 Entering Own Price Lists . 21 5.2 Changing the Password for Sunny Design and Sunny Portal . 22 5.3 Request password . 22 5.4 Performing an Update for Sunny Design Desktop Version . 22 5.5 Synchronizing Sunny Design Desktop Version and Sunny Design Web . 22 5.6 Importing Data from Sunny Design Desktop Version from Software Version 2 . 23 5.7 Transfer missing PV module data . 23 5.8 Reporting Errors and Problems . 24 5.9 Calling up the User Manual . 24 5.10 Exiting Sunny Design . 24 6 Projects . 25 6.1 Project Management . 25 6.1.1 Creating a New Project . 25 6.1.2 Duplicate project . 25 6.1.3 Working with Templates . 25

Table of Contents SMA Solar Technology AG User Manual SD3-SDW-BA-en-21 4 6.1.4 Rename project . 25 6.1.5 Delete Project . 26 6.2 Procedure for designing projects . 26 6.2.1 Design PV system without self-consumption . 26 6.2.2 Design PV system with self-consumption . 26 6.2.3 Design an off-grid system . 27 6.2.4 Design PV hybrid system . 27 6.2.5 Design energy system . 28 6.3 Project design . 28 6.3.1 Enter the project data . 28 6.3.2 Defining the Load Profile . 29 6.3.3 Configuring Gensets (PV Hybrid System . 30 6.3.4 Defining a Scenario . 30 6.3.5 Configuring System Components . 31 6.3.6 Configuring the PV System . 35 6.3.6.1 Have Design Suggestions Displayed . 36 6.3.6.2 Setting Criterion for Sorting the Design Suggestions . 37 6.3.7 Configuring the Battery System . 37 6.3.8 Configuring the Genset (Off-Grid System . 38 6.3.9 Wire Sizing . 38 6.3.10 Determining Self-Consumption . 39 6.3.11 Planning the Energy Management . 40 6.3.12 Analyze profitability . 42 6.3.12.1 Analyzing Profitability (PV System with and without Self-Consumption . 42 6.3.12.2 Analyzing Profitability (PV Hybrid Project . 42 6.3.13 Analysis of the energy and power in the system . 42 6.3.14 Overview of the results . 43 6.3.15 View summary . 43 6.3.16 Create the project documentation . 44 6.4 Create harmonics calculation . 44 7 Glossary . 46 8 Contact . 51

1 Information on this Document SMA Solar Technology AG User Manual 5 SD3-SDW-BA-en-21 1 Information on this Document 1.1 Validity This document is valid for: • Desktop version "Sunny Design 3" from software version 3.20 • Online version "Sunny Design Web" from software version 3.20 1.2 Target Group This document is intended for PV system designers. PV system designers must have the following qualifications: • Knowledge of how an inverter works and is operated • Knowledge of all applicable laws, standards and directives 1.3 Symbols in the Document Symbol Explanation Information that is important for a specific topic or goal, but is not safety-relevant Indicates a requirement for meeting a specific goal Desired result A problem that might occur Example Content applies to PV systems without self-consumption. Content applies to PV systems with self-consumption. Content applies to off-grid systems.

Content applies to PV-hybrid systems. PRO Content applies to energy systems.

1 Information on this Document SMA Solar Technology AG User Manual SD3-SDW-BA-en-21 6 1.4 Typographies in the document Typography Use Example bold • Messages • Terminals • Elements on a user interface • Elements to be selected • Elements to be entered • Connect the insulated conductors to the terminals X703:1 to X703:6. • Enter 10 in the field Minutes. > • Connects several elements to be selected • Select Settings > Date. [Button] [Key] • Button or key to be selected or pressed • Select [Enter]. 1.5 Designation in the document Complete designation Designation in this document Sunny Design Desktop Version Sunny Design Sunny Design Pro Sunny Design Sunny Design Web Sunny Design 1.6 Additional Information Document title and content Document type "Performance Ratio" Technical Information "Designing PV Plants Optimised for Economic Efficiency" Technical Information "Leading Leakage Currents" Information on the design of transformerless inverters of type Sunny Boy /Sunny Mini Central / Sunny Tripower Technical Information "Grid Connection" Influence of grid properties on the connected power of PV inverters Technical Information "Reverse Current" Advice on PV Array Configuration for PV Systems using Sunny Mini Central Technical Information "Module Technology" Technical Information

2 Product Overview SMA Solar Technology AG User Manual 7 SD3-SDW-BA-en-21 2 Product Overview 2.1 Product Description Sunny Design is a software for planning and designing PV systems with and without self-consumption, off-grid systems, PV hybrid systems as well as energy systems. Sunny Design provides you with a design recommendation for your planned system or your planned energy system. Sunny Design also proposes a combination of PV array(s) and inverter(s) which meet, as closely as possible, your requirements regarding power class, energy yield and efficiency. In addition, you have the option of determining and optimizing your potential self-consumption, sizing the cables, evaluating efficiency and, in PV hybrid systems and off-grid system, configuring gensets. Difference Between Sunny Design Web and Sunny Design Desktop Version Sunny Design is available as an online version "Sunny Design Web" and as a desktop version "Sunny Design 3". You must install the Sunny Design desktop version on your computer. To use the Sunny Design desktop version, you must first register for Sunny Design Web. After the initial registration, you do not need an Internet connection. To ensure that your Sunny Design desktop version remains current, (e.g. new inverters, new PV modules), you should occasionally perform an update for the Sunny Design desktop version via the Internet (see Section 5.4, page 22). The Sunny Design desktop version can only be used by one user per computer. After initial login to the Sunny Design desktop version on the computer, the Sunny Design desktop version can only be used by this user on this computer. You can only use Sunny Design Web via the Internet. You can synchronize Sunny Design Web and the Sunny Design desktop version via the Internet. This means that your Sunny Design projects are available in the Internet in Sunny Design Web and on your computer in the Sunny Design desktop version. For synchronization, you must have an Internet connection and the latest software version of the Sunny Design desktop version (see Section 5.5, page 22). Sunny Design Pro: An additional access authorization is required for designing an energy system and for advanced settings.

You require an access authorization for Sunny Design Pro to be able to design an energy system and to use the advanced settings. You will receive the information via the button [Energy systems] on the Sunny Design Web home page or on the personal start page after login. Function Anonymous user Sunny Design Web Registered user Sunny Design Desktop Ver- sion Registered user Sunny Design Web Registered user Sunny Design Pro Creating PV Systems without Self-Consump- tion ✓ Creating PV Systems with Self-Consumption ✓ Creating Off-Grid Systems ✓ Creating PV Hybrid Systems ✓ Saving and Managing Projects ✓ Harmonics calculation ✓ Creating Own PV Modules, Locations and Load Profiles ✓ Creating Energy Systems ✓

2 Product Overview SMA Solar Technology AG User Manual SD3-SDW-BA-en-21 8 Function Anonymous user Sunny Design Web Registered user Sunny Design Desktop Ver- sion Registered user Sunny Design Web Registered user Sunny Design Pro Memory simulation for Peak Load Shaving ✓ Tariff administration ✓ Consumption data and load profile analysis ✓ Advanced project documentation ✓ 2.2 Functions Using Sunny Design, and in compliance with all current legal and industrial requirements, you can plan various design scenarios with all SMA inverters in the form of projects. In Sunny Design the following project types are available: PV system without self-consump- tion PV system that is connected to the utility grid and where self-consump- tion is not taken into account PV system with self-consumption PV system that is connected to the utility grid and where self-consump- tion is taken into account Off-grid system PV system that is not connected to the utility grid and where self-con- sumption is not taken into account PV hybrid system PV system to which electric transformers are connected and where self-consumption is not taken into account PRO Energy system Energy systems with integrated energy; this project type is only avail- able with Sunny Design Pro Depending on the selected project type, Sunny Design provides the following functions: Function PRO Determine the potential fuel and CO2 savings ✓ Determine and optimize self-consumption ✓ Define load profile ✓ Configure the gensets – Cable dimensioning ✓ Plan system monitoring ✓ Analyze efficiency ✓ Enter prices for PV modules and inverters ✓

2 Product Overview SMA Solar Technology AG User Manual 9 SD3-SDW-BA-en-21 Function PRO Create project templates with default values ✓ Print project documentation or save as PDF file ✓ Cross-sectoral view ✓ 2.3 System Requirements Sunny Design Web System requirements: ☐ A computer with Internet access must be available. ☐ A supported web browser must be installed on the computer. ☐ JavaScript must be enabled in the web browser. Supported web browsers: The following web browsers are supported without restrictions: • Microsoft Internet Explorer from version 11 • Microsoft Edge with Windows 10 • Mozilla Firefox from version 17 • Google Chrome from version 24 • Opera from version 12 • Apple Safari from version 6 Sunny Design Desktop Version System requirements: ☐ A computer with Internet access must be available. ☐ A supported web browser must be installed on the computer. ☐ JavaScript must be enabled in the web browser. ☐ The computer must have at least 400 MB of free memory. ☐ The computer's main memory must be at least 2 GB. Supported operating systems: • from Microsoft Windows 7 Supported web browsers: • Microsoft Internet Explorer from version 9

3 Setup and start SMA Solar Technology AG User Manual SD3-SDW-BA-en-21 10 3 Setup and start 3.1 Registering for Sunny Design To use the Sunny Design desktop version as well as Sunny Design Web, you must register one time. Upon registration, you are given an user account which you can use for Sunny Design Web, the Sunny Design desktop version and Sunny Portal. Use the Sunny Portal user account for Sunny Design Web as well If you are already registered for the Sunny Portal, you can use this account to log in to Sunny Design Web. You do not need to register again. When you log in to Sunny Design for the first time with your Sunny Portal user data, you must agree to the Sunny Design terms of use and privacy policy.

Procedure: 1. If you are using Sunny Design Web: • Start the web browser and call up www.SunnyDesignWeb.com. ☑ The Sunny Design Web homepage opens. • Select the button [I do not yet have a user account - Register] in the Login window. or • Select Login > I do not yet have a user account - Register in the header of the home page. or • Select the [Register now for free] button on the home page. 2. If you are using the Sunny Design desktop version: • Start the Sunny Design desktop version. • In the Login area, select the button [Register for Sunny Design Web]. 3. Fill in the details on the user registration form.

4. Select [Create user account]. ☑ You receive a confirmation of registration by e-mail. 5. Open the e-mail and select the activation link. ☑ You are registered and your account is activated. 3.2 Start Sunny Design Web 1. Start the web browser and call up www.SunnyDesignWeb.com. ☑ The Sunny Design Web homepage opens. 2. In the Login window, sign in with your e-mail address and the password of your user account. or In the home page header, select [Login] and log in with the e-mail address and password of your user account. 3. When you log in to Sunny Design for the first time, you must agree to the terms of use and privacy policy. 3.3 Installing and starting Sunny Design Desktop Version In order to use Sunny Design Web, it is not necessary to install the Sunny Design desktop version. If .NET Framework 4.0 has not been installed on your computer, the Sunny Design installation file automatically installs it.

3 Setup and start SMA Solar Technology AG User Manual 11 SD3-SDW-BA-en-21 Requirement: ☐ System requirements for the Sunny Design desktop version must be met ((see Section 2.3, page 9)). ☐ You must be registered for Sunny Design (see Section 3.1, page 10). ☐ The computer must have an Internet connection. Procedure: 1. Download the Sunny Design desktop version to the computer from the download area at www.SMA- Solar.com. 2. Run the file SDesign-x.xx.x.x_Internet-exe. ☑ The Sunny Design Setup dialog box opens. 3. Confirm the security prompt if it appears. 4. Select the desired language.

5. Select [OK]. ☑ The installation assistant will open. 6. Follow the Installation Assistant instructions. 7. Start the Sunny Design desktop version and log in using your account's e-mail address and password in the Login area.

4 User Interface SMA Solar Technology AG User Manual SD3-SDW-BA-en-21 12 4 User Interface 4.1 Personal Homepage After Login A B C Figure 1: Personal homepage in Sunny Design Web after login (example) Position Designation Explanation A Header The following functions are available here: • Language selection • For the Sunny Design desktop version: synchronization with Sunny Design Web • My Sunny Design menu: – Making settings for location specification, notification dialogs, units of measurement, temperature units – Making settings for calculation of design suggestions, for display of result values, for the letterhead on project documentation, for efficiency analysis and for tariff information – Creating own PV modules and favorites – Creating own locations – Creating own load profiles – Creating own price lists for inverters – User-defined tariffs This function is only available in the Sunny Design Pro version. • Menu "First name, last name": – Changing the Password – Logout For the Sunny Design desktop version, you do not have to use the Logout button to log out. You can simply close the application window to exit Sunny Design.)

4 User Interface SMA Solar Technology AG User Manual 13 SD3-SDW-BA-en-21 Position Designation Explanation B Navigation area This area contains a list of the projects you have already planned. C Work area In this area you have access to your projects, templates and settings. On the MANAGE PROJECTS PAGE, you can, for example, delete, rename, export, and duplicate projects and save them as templates. 4.2 Project pages The project pages are displayed after you have selected a project on the start page. You plan your project on the project pages.

A B C D E Figure 2: Enter project data project page (example) Position Designation Explanation A Header General functions (see Section 4.1 "Personal Homepage After Lo- gin", page 12) Additional functions on the project pages: • Name of the current project and a selection of the last three processed projects • Original: Creating and comparing alternatives B Main navigation Using this navigation, you can call up the project planning pages that are displayed in the workspace. The main navigation maps the steps for planning a project (see Section 6.2, page 26). Using the main navigation, you can select the individual menu items if all previous steps were preformed.

On small screens, the menu items are aggregated and the button is shown. Using this button, you can hide or display the menu items. C Navigation area On small screens, the entire navigation area is automatically hidden and the button is displayed. Using this button, you can then hide or display the entire navigation area. Navigation On the Navigation tab, jump labels are available to areas on the page that is currently displayed. Help On the Help tab, you can call up the quick reference guide on the project page currently displayed.

4 User Interface SMA Solar Technology AG User Manual SD3-SDW-BA-en-21 14 Position Designation Explanation D Work area In this area, the content of the page currently selected in the main navigation is displayed. Here you make settings and thus plan your project. Next steps At the end of each page in the work area, the next possible steps are displayed in the Next steps area. The buttons in this area can only be selected if you have made the necessary settings on the page. E – Button to hide and display the header and the main navigation 4.3 Project tree Project tree in the navigation area The project tree displays important project information, provides quick access to functions and enables navigation between the individual elements of the project.

A Figure 3: Project tree (example) Position Designation Explanation A Navigation area On the project page Configure PV System, the planned PV system is displayed in the navigation area in the form of a project tree. Functions in the Project Tree If you select an element in the project tree, a menu is displayed where you can rename, delete or duplicate the element, for example. You can also remove elements from a subproject or copy them to a different subproject.

5 General Operation SMA Solar Technology AG User Manual 15 SD3-SDW-BA-en-21 5 General Operation 5.1 My Sunny Design 5.1.1 Make the settings Making general settings 1. In the header My Sunny Design > Settings select the button [General]. 2. To change the specifications for new projects, in the area Specifications for new projects, select the Project type, Region, Country and City in the drop-down lists. 3. To change the linear measure setting, select the [Metric] or [Imperial/US] button in the Unit area. 4. To change the temperature unit setting, select the [Degree Celsius (°C)] or [Degree Fahrenheit (°F)] button in the Unit area.

5. To change the decimal separator setting, select the relevant decimal separator from the drop-down list Decimal separator in the Unit area. 6. To change the default setting of the PV module: • Select the magnifying glass symbol in the PV module area. • Select desired PV module and select Adopt PV module. • To change the desired certification of the PV module, select the [EU], [EU/UL] or [UL] button in the Certification area. 7. To display deactivated messages again, in the Information dialog area, select the button [Display deactivated messages again].

8. To hide projects and templates on the personal start page, select the Hide projects and templates on home page checkbox in the Visibility of projects area. Make settings for the design 1. In the header My Sunny Design > Settings, select the [Design] button. 2. To change the used power ratio, select the desired ratio in the Used power ratio area. 3. To change the settings for calculating and assessing suggested designs: • In the area Calculating and assessing suggested designs, in the drop-down list Method for calculating suggested designs, select the required method.

• In the area Calculating and assessing suggested designs, in the field Share of the inverters on the investment costs, select the required portion of the total investment costs that the inverter costs are to make up. The portion can be between 0% and 20%. 4. To change the minimum cross-section for wire sizing, make the desired settings in the Minimum cross-section for wire sizing. 5. To adjust the inverter filter settings, in the Specification for the inverter filter area, adjust the settings for the design recommendation.

Set result values 1. In the header My Sunny Design > Settings, select the [Result values] button. 2. To set which result values are displayed in the project information, the overview and the output documents, activate or deactivate the checkbox of the respective result value. 3. If desired, adjust the order of the result values using the arrows.

5 General Operation SMA Solar Technology AG User Manual SD3-SDW-BA-en-21 16 Create letterhead 1. In the header My Sunny Design > Settings, select the [Letterhead] button. 2. In the Letterhead and Additional information (phone, fax) fields, provide the relevant information. 3. To add a logo, activate the checkbox 'Logo' and upload a logo (permitted file formats: BMP, GIF, JPG, PNG) via the [Select logo] button. Changing specifications for profitability analysis 1. In the header My Sunny Design > Settings, select the [Profitability] button. 2. In order to change general requirements for reviewing the profitability, in the General area, adjust currency, equity ratio of the investment costs, profitability analysis period, credit period, specific investment costs of the turnkey PV system, interest rate, imputed rate of interest and inflation rate.

3. To change additional specifications for reviewing the profitability of PV projects, adjust the subsidy amount and annual fixed cost in the PV projects area. 4. To change additional specifications for reviewing the profitability of PV hybrid projects, adjust the operating expenditure, effective fuel costs, increase of fuel costs and portion of costs of the inverters in the PV hybrid projects area. Only for PV systems with self-consumption: Change tariff settings 1. In the header My Sunny Design > Settings, select the [Tariff information] button. 2. To change specifications for the base current tariff, in the area [Base current tariff], adjust the credit period, feed-in tariff duration, electricity inflation rate, deduction or reimbursement with self-consumption, feed-in tariff and revenue from electricity after expiry of the feed-in tariff.

3. To change specifications for the preferential electricity tariff, adjust settings in the [Preferential electricity tariff] area. 5.1.2 Creating and Managing own PV Modules Create a new PV module without template 1. In the header, select My Sunny Design > Own PV modules. 2. In the dialog box Own PV modules, select the [Add new PV module] button. 3. Enter the manufacturer in the Manufacturer field. 4. Enter the PV module name in the PV module field. 5. If this PV module is a discontinued PV module, deactivate the Current PV module checkbox. 6. Select the cell technology from the drop-down list Cell technology. 7. Select the recommended grounding from the drop-down list Grounding recommendation. 8. Activate the available certification in the Certification area. 9. Enter the values for nominal power, longitude, latitude, MPP voltage, open-circuit voltage, temperature coefficient of the open-circuit voltage, MPP current, short-circuit current and permitted system voltage in the Mandatory information area.

10. If desired, enter further values in the Advanced information area. 11. Select [Save PV module]. Create a new PV module with template 1. In the header, select My Sunny Design > Own PV modules. 2. In the dialog box Own PV modules, select the [Add new PV module] button. 3. In the dialog box Own PV module, select the [Select PV module] button.

5 General Operation SMA Solar Technology AG User Manual 17 SD3-SDW-BA-en-21 4. In the dialog box Selection PV module, select the desired PV module and [Use template] in the drop-down lists Manufacturer and PV module. or In the dialog box Selection PV module, select the magnifying glass symbol and in the dialog box Find PV module the desired PV module and Apply PV module. 5. In the dialog box New PV module, make the relevant changes and select [Save PV module]. Editing or deleting PV modules 1. In the header, select My Sunny Design > Own PV modules. 2. In the dialog box Own PV modules, select the desired PV module. 3. To edit the PV module, select Edit, make the desired changes and select Save PV module]. 4. To delete the PV module, select [Delete] and confirm the security prompt with [Yes]. Add PV module to favorites 1. In the header, select My Sunny Design > PV modules favorites. 2. Select [Add to favorites].

3. To restrict the selection of PV modules, use the free text search or provide the relevant information in the Search options area. 4. Select the desired PV module and select [Add to favorites]. 5.1.3 Entering Prices for PV Modules You can enter prices for PV modules. If you use a PV module with a price in the project, the price of the PV module is adopted as the default setting for the analysis of efficiency. Prices for PV modules can either be entered via My Sunny Design or while designing a project on the Configure PV system page. Missing PV module data can be transferred to SMA Solar Technology AG (see Section 5.7, page 23).

Via My Sunny Design 1. In the header, select My Sunny Design > Own PV modules. 2. In the dialog box Own PV modules, select the desired PV module and select Edit. 3. In the Extended information area, enter the price in the Price per PV module field. Configure via the PV system page Requirement: ☐ You must have opened a project and have it planned up to page Configure PV system. Procedure: 1. On the page Configure PV system, select the magnifying glass symbol. ☑ The Find PV modules dialog box opens. 2. In the dialog box Find PV module, select the desired PV module. 3. Select Edit price and make the required settings. 5.1.4 Entering Prices for Inverters You can enter prices for inverters. If you use an inverter in the project, the price of the inverter is adopted as the default setting for the analysis of efficiency.

Procedure: 1. Select My Sunny Design > Own price list in the header.

5 General Operation SMA Solar Technology AG User Manual SD3-SDW-BA-en-21 18 2. To restrict the selection of inverters in the dialog box Own price list, activate the required checkboxes in the Restrict inverters area. 3. Select the required inverter and enter the required price. 4. Select [OK]. 5.1.5 Create and manage your own locations Create new location without template 1. Select My Sunny Design > Own locations in the header. 2. In the dialog box Own locations, select the [Add new location] button. 3. In the area Location, select the Region and Country and enter the name for the city in the City field. 4. If desired, adjust the currency in the Currency area.

5. In the area Specification for orientation of PV array, enter the Specification tilt and Specification azimuth. 6. Enter the nominal power ratio in the Nominal power ratio area. 7. In the Grid connection area, select the desired grid connection. 8. If desired, enter the maximum unbalanced load to be taken into account in the Take max. unbalanced load into account field in the Grid connection area. 9. To use the meteorological data stored in Sunny Design: • In the Meteorological data used area, activate the button [SMA meteorological data] and select the region, country and city.

• To adjust the temperature data, make the required settings in the Ambient temperature area. 10. To import meteorological data: • In the area Meteorological data used, select the button [Imported meteorological data]. • To call up further information on the import of meteorological data, select Further information. • Select [Import data]. • Select the file with the meteorological data to be imported. • Select [Open]. • To adjust the global radiation to the correct time of day, enter the time correction in the Time correction field in the Average global radiation area.

• To change geographical data, make the required settings in the Geographical information area. • To adjust the temperature data, make the required settings in the Ambient temperature area. 11. Select [Save location]. Create new location with template 1. Select My Sunny Design > Own locations in the header. 2. In the dialog box Own locations, select the [Add new location] button. 3. In the dialog box New location, select the [Use template] button. 4. In the dialog box Template for location data, enter the region, country and city. 5. Select [Use template] and make the required changes in the New location dialog box. 6. Select [Save location].

Manage your own locations 1. Select My Sunny Design > Own locations in the header. 2. In the dialog box Own locations, select the desired location.

5 General Operation SMA Solar Technology AG User Manual 19 SD3-SDW-BA-en-21 3. To delete an own location, select Delete. 4. To edit an own location, select Edit. 5. Make the required settings and select [Save location]. 5.1.6 Own Load Profiles 5.1.6.1 Importing Own Consumption Data Requirements for the consumption data: ☐ The data series begins on January 1 at 00:00 a.m. ☐ The values cover a complete year (365 days or a leap year with 366 days) or an entire week (7 days). If the values cover seven days, a complete year is created from this data.

☐ The values have a time interval of 5, 10, 15, 30 or 60 minutes. ☐ The power or energy values are positive and indicated in the following units: W, kW, Wh or kWh. ☐ All values are in the first column. ☐ Either a period (.) or a comma (,) is used as decimal separator. ☐ The data is in CSV format (.csv). Example: An excerpt from a CSV file containing data of one year (365 days) with a time interval of 15 minutes. Procedure: 1. On the page Define load profile, select the button [+New load profile]. or In the menu My Sunny Design > Own load profiles, select the [Add new load profile] button. 2. In the field Name, enter a name for the load profile.

3. If required, enter a description for the load profile in the field Description. 4. If not yet active, activate the Import consumption data field. 5. In the area Import consumption data, select the form of the consumption data to be imported: • Select the number of days in the year in the Number of days drop-down list. • Select the time interval of the values in minutes in the Time interval drop-down list. • Select the unit in the Unit drop-down list.

5 General Operation SMA Solar Technology AG User Manual SD3-SDW-BA-en-21 20 6. Select [Import consumption data]. 7. Select the file with the consumption data to be imported. 8. Select [Open]. ☑ The message confirming that the import was successful is displayed. The calculated energy consumption per year is automatically displayed in the field Default "Energy consumption per year". ✖ The message confirming that the import failed is displayed. An error has occurred. • Select [Details] and take note of the message. • If the number of data points is not consistent, check the settings for Number of days and Time interval and change these so that the expected number of data points corresponds to the number of data points found in the file.

• If the consumption data in the file is not in the first column or if there is data in the other columns, open a spreadsheet program (e.g. Excel), copy the consumption data series, insert it into a new document in the first column, and save as a CSV file; then repeat the import procedure. 5.1.6.2 Importing Consumption Data from Sunny Portal You can import consumption data from a PV system of Sunny Portal if you have access to a PV system in Sunny Portal using the e-mail address with which you log into Sunny Design.

Procedure: 1. On the page Define load profile, select the button [+New load profile]. or In the menu My Sunny Design > Own load profiles, select the [Add new load profile] button. 2. In the Name field, enter a name for the load profile in the dialog box New load profile. 3. If required, enter a description for the load profile in the field Description. 4. Enter the annual energy consumption in the field Default "Energy consumption per year". 5. Select [Consumption data from Sunny Portal]. 6. In the Sunny Portal system drop-down list, select the required Sunny Portal system. 7. In the Time period drop-down list, select the time period from which the data is to be imported. You can chose whether the last twelve months (365 days retroactively from the previous day at 12 p.m.) are to be imported or the entire previous calendar year from January to December.

8. Select [Import consumption data]. ☑ The message confirming that the import was successful is displayed. The calculated energy consumption per year is automatically displayed in the field Default "Energy consumption per year". ✖ The message confirming that the import failed is displayed. It is possible that no consumption data or insufficient data is available for the selected Sunny Portal system. • In the Sunny Portal system drop-down list, select a different Sunny Portal system and select [Import consumption data].

5.1.6.3 Creating Consumption Data manually 1. On the page Define load profile, select the button [+New load profile]. or In the menu My Sunny Design > Own load profiles, select the [Add new load profile] button. 2. In the field Name, enter a name for the load profile. 3. If required, enter a description for the load profile in the field Description. 4. Enter the annual energy consumption in the field Default "Energy consumption per year".

5 General Operation SMA Solar Technology AG User Manual 21 SD3-SDW-BA-en-21 5. Select [Create consumption data]. 6. If required, adjust the seasons in the area Breakdown of seasons into months. To do this, select the dates for the beginning and end of summer and winter. 7. Create the required number of daily load profiles and assign to the different seasons. 8. Select [Save load profile]. 5.1.6.4 Deleting Own Load Profile Requirement: ☐ The load profile to be deleted must not be in use in any current projects. An error message is displayed if the load profile is used in a project.

Procedure: 1. Select My Sunny Design > Own load profiles. 2. Select the load profile to be deleted. 3. Select [Delete] and confirm the security prompt with [Yes]. 5.1.7 Entering Own Price Lists PRO Add a purchasing tariff 1. Select My Sunny Design > Own price list in the header. 2. Select [Add a new purchasing tariff] 3. To use a template, select [Use template], select the desired tariff in the drop-down list and then select [Use template]. 4. Enter the desired name in the Name field. 5. Select the energy carrier from the Energy carrier drop-down list. 6. Enter a description in the field Description if desired. 7. Select the desired accounting period from the Accounting period drop-down list. 8. In the fields Portion of renewable energy, CO2emission factor, annual inflation rate enter the desired values.

9. In the Basic tariff area, enter the kilowatt-hour rate and price per kilowatt. 10. Add tariff module, if desired: • Select [Add tariff module]. • From the Module type drop-down list select the desired module type and [Use module]. • Enter the desired value in the dialog box of the selected module type and select [OK]. 11. Select [Save tariff]. Add feed-in tariff 1. Select My Sunny Design > Own price list in the header. 2. Select [Add a new feed-in tariff]. 3. To use a template, select [Use template], select the desired tariff in the drop-down list and then select [Use template].

4. Enter the desired name in the Name field. 5. Select the energy carrier from the Energy carrier drop-down list.

5 General Operation SMA Solar Technology AG User Manual SD3-SDW-BA-en-21 22 6. Enter a description in the field Description if desired. 7. Select the desired accounting period from the Accounting period drop-down list. 8. In the Basic tariff area, select the desired feed-in tariff model from the drop-down list Feed-in tariff model. 9. Enter the desired values in the fields Feed-in tariff / selling price, Duration of feed-in tariff, Selling price after expiry of feed-in tariff, Reallocation charge (-) or feed-in tariff (+) of self-consumption and fixed cost.

10. In the drop-down list Reference value, select the desired reference value. 11. Select [Save tariff]. 5.2 Changing the Password for Sunny Design and Sunny Portal You can change your Sunny Design password in Sunny Design. Your Sunny Design password is also your Sunny Portal password. Procedure: 1. Start the Sunny Design desktop version or call up www.SunnyDesignWeb.com. 2. In the header menu, select "First name, last name" > Change password. ☑ The Sunny Portal homepage opens. 3. In the Login area, fill in the fields E-mail and Password and select [Login]. 4. Select If you want to change your password, please click here. 5. Fill out the fields.

6. Select [Save]. 5.3 Request password If you have forgotten your password, you can request a new one. 1. Start the Sunny Design desktop version or call up www.SunnyDesignWeb.com. 2. In the header, select First name, last name > Change password. ☑ The Sunny Portal homepage opens. 3. Select the Forgot password button in the Change password dialog box and follow the instructions. 5.4 Performing an Update for Sunny Design Desktop Version Requirement: ☐ The computer must have an Internet connection. Procedure: 1. Start the Sunny Design desktop version. 2. In the menu bar select File > Online update. ☑ Dialog box Online update opens.

3. Select [OK]. 5.5 Synchronizing Sunny Design Desktop Version and Sunny Design Web You can synchronize the Sunny Design desktop version with your account in Sunny Design Web. This means that your Sunny Design projects with all data and settings will be available both online and offline.

5 General Operation SMA Solar Technology AG User Manual 23 SD3-SDW-BA-en-21 Requirements: ☐ The current software version of the Sunny Design desktop version must be installed on the computer (see Section 5.4, page 22). ☐ The computer must have an Internet connection. Procedure: 1. Start the Sunny Design desktop version and log in with your own user data. 2. Select [Synchronization] in the header. ☑ The dialog box Data synchronization opens. 3. Select [Start]. ☑ Sunny Design is performing the data synchronization. Sunny Design Web cannot be used during the synchronization.

5.6 Importing Data from Sunny Design Desktop Version from Software Version 2 You can import projects, PV modules and own locations from the Sunny Design desktop version from software version 2 into the Sunny Design desktop version from software version 3. The relevant data must first be saved in the database files. Own locations and own PV modules are automatically designated with a * symbol in Sunny Design. Importing Personal Databases from Sunny Design Desktop Version from Software Version 2 Database file requirements: ☐ The database file must not have been imported yet. ☐ The database file must be available in the following file formats: Projects in the file format ".sdp2" or ".sdp3". You can first import projects in older file formats in Sunny Design 2 and save them in file format ".sdp2".

Own PV modules and own locations in file format ".sdud" ☐ The country of the location to be imported must be available in the country list. Procedure: 1. Start the Sunny Design desktop version or call up www.SunnyDesignWeb.com. 2. 3. Select the desired file format in the dialog box Import data. 4. Select [Import]. ☑ The file selection window opens. 5. Select the desired database file in the file selection window and select [Open]. ☑ Data of the selected database file is imported and information on the number of imported data sets is displayed. If the database already has an own PV module with the same name as the own PV module to be imported, Sunny Design adds a sequential number to the file name of the PV module that has been imported. ✖ Data from the selected database file is not imported?

The requirements for the database file may not be met. • Ensure that the requirements for the database file are met. 5.7 Transfer missing PV module data To have missing PV modules included in Sunny Design, you can transmit the product data sheet of the manufacturer to SMA Solar Technology AG. The data of the PV module will be added in Sunny Design with the next firmware update.

5 General Operation SMA Solar Technology AG User Manual SD3-SDW-BA-en-21 24 Requirements: ☐ The computer must have an Internet connection. Procedure: 1. Select the Transmit missing PV module data option on the personal home page in the SUPPORT & NEWS area. ☑ An e-mail opens. 2. Complete e-mail, attach datasheet and send e-mail. 5.8 Reporting Errors and Problems Requirements: ☐ The computer must have an Internet connection. Procedure: 1. Select the Report problems option on the personal home page in the SUPPORT & NEWS area. ☑ An e-mail to the SMA Service Line opens.

2. Complete e-mail and send. 5.9 Calling up the User Manual You can download the user manual in PDF format on the home page in Sunny Design. To display PDF documents, you need the Adobe Reader software. You can download Adobe Reader for free on the Internet. Procedure: • Select the User manual option on the personal home page in the SUPPORT & NEWS area. 5.10 Exiting Sunny Design 1. In Sunny Design desktop version, close the application window. Logging out is not necessary. 2. For Sunny Design Web, select First name, last name > Logout in the header.

6 Projects SMA Solar Technology AG User Manual 25 SD3-SDW-BA-en-21 6 Projects 6.1 Project Management 6.1.1 Creating a New Project 1. Select the desired project type on the personal home page in the NEW PROJECT area. ☑ The page Enter project data opens(see Section 6.3.1, page 28). 2. Create a new project step by step (see Section 6.2 "Procedure for designing projects", page 26). 6.1.2 Duplicate project 1. Select the Manage projects link on the personal home page in the PROJECTS area. ☑ The page Manage projects opens.

2. Select desired project. 3. Select Duplicate. ☑ Dialog box Duplicate project opens. 4. Enter the required project name in the field Project name. 5. Select [Save copy]. 6.1.3 Working with Templates Save project as template 1. Select the Manage projects link on the personal home page in the PROJECTS area. ☑ The page Manage projects opens. 2. Select desired project. 3. Select Save as template. 4. In the Project name field, enter the template name. 5. Select [Accept changes]. Create a project from template 1. Select the desired template on the personal home page in the TEMPLATES area. or Select the Manage templates link on the personal home page in the TEMPLATES area. ☑ The page Manage templates opens.

2. Select the preferred template. 3. Select New project with this template. 4. Enter the required project name in the field Project name. 5. Select [Accept changes]. 6.1.4 Rename project 1. Select the Manage projects link on the personal home page in the PROJECTS area. ☑ The page Manage projects opens. 2. Select desired project. 3. Select Rename.

6 Projects SMA Solar Technology AG User Manual SD3-SDW-BA-en-21 26 4. Enter the required project name in the field Project name. 5. Select [Accept changes]. 6.1.5 Delete Project 1. Select the Manage projects link on the personal home page in the PROJECTS area. ☑ The page Manage projects opens. 2. Select desired project. 3. Select [Delete]. ☑ Dialog box Delete project opens. 4. Select [Delete] and confirm the security prompt with [Yes]. 6.2 Procedure for designing projects 6.2.1 Design PV system without self-consumption Procedure See 1. Start Sunny Design and select the required project type Section 3.2, page 10 2. Enter the project data Section 6.3.1, page 28 3. Configure the PV system. Section 6.3.6, page 35 4. Wire sizing (optional) Section 6.3.9, page 38 5. Plan the system monitoring (optional). Section 6.3.11, page 40 6. Analyze efficiency (optional) Section 6.3.12, page 42 7. Overview of the results Section 6.3.14, page 43 8. Create the project documentation. Section 6.3.16, page 44 6.2.2 Design PV system with self-consumption Procedure See 1. Start Sunny Design and select the required project type Section 3.2, page 10 2. Enter the project data Section 6.3.1, page 28 3. Define the load profile Section 6.3.2, page 29 4. Configure the PV system. Section 6.3.6, page 35 5. Wire sizing (optional) Section 6.3.9, page 38 6. Determine the self-consumption (optional). Section 6.3.10, page 39 7. Plan the system monitoring (optional). Section 6.3.11, page 40 8. Analyze efficiency (optional) Section 6.3.12, page 42

6 Projects SMA Solar Technology AG User Manual 27 SD3-SDW-BA-en-21 Procedure See 9. Overview of the results Section 6.3.14, page 43 10. Create the project documentation. Section 6.3.16, page 44 6.2.3 Design an off-grid system Procedure See 1. Start Sunny Design and select the required project type Section 3.2, page 10 2. Enter the project data Section 6.3.1, page 28 3. Define the load profile Section 6.3.2, page 29 4. Configure the PV system. Section 6.3.6, page 35 5. Configure the battery system (optional) Section 6.3.7, page 37 6. Configure genset (optional) Section 6.3.8, page 38 7. Wire sizing (optional) Section 6.3.9, page 38 8. View analysis of the energy and power in the system (optional) Section 6.3.13, page 42 9. Overview of the results Section 6.3.14, page 43 10. Create the project documentation. Section 6.3.16, page 44 6.2.4 Design PV hybrid system Procedure See 1. Start Sunny Design and select the required project type Section 3.2, page 10 2. Enter the project data Section 6.3.1, page 28 3. Define the load profile Section 6.3.2, page 29 4. Configure the gensets Section 6.3.3, page 30 5. Configure the PV system. Section 6.3.6, page 35 6. Wire sizing (optional) Section 6.3.9, page 38 7. Analyze efficiency (optional) Section 6.3.12, page 42 8. Overview of the results Section 6.3.14, page 43 9. Create the project documentation. Section 6.3.16, page 44

6 Projects SMA Solar Technology AG User Manual SD3-SDW-BA-en-21 28 6.2.5 Design energy system PRO Procedure See 1. Enter the project data Section 6.3.1, page 28 2. Define scenario Section 6.3.4, page 30 3. Configure system components Section 6.3.5, page 31 4. Overview of the results Section 6.3.14, page 43 5. View summary Section 6.3.15, page 43 6. Create the project documentation. Section 6.3.16, page 44 6.3 Project design 6.3.1 Enter the project data PRO Project Data Area 1. Enter the required project name in the field Project name. 2. Only for energy systems: Upload image, if desired: • Select [Upload image].

☑ The dialog box Upload project images opens. • To select a file, select [Upload different image]. • In the file selection window, select the desired file and [Open]. ☑ The image is displayed in the preview. • If necessary, enter an image title and a caption for the current image in the relevant fields. • To crop the image, select [Edit image]. • Change the cropped image using the gripping points and select [Accept changes]. • Select [Accept changes]. 3. In the Location area, select the desired location. 4. Select [Low voltage] or [Medium voltage]. 5. If you have selected [Low voltage], select the required grid voltage in the Grid voltage of the inverters drop- down list.

6. If you have selected [Medium voltage]: • Depending on which inverters you wish to use in the PV system, select either Decentralized inverters or Central inverters in the System type area. • Enter the required medium voltage in the Medium voltage field. • If you have selected the option Decentralized inverters: – In the Inverter grid connection drop-down list, select the required output voltage of the inverters.

6 Projects SMA Solar Technology AG User Manual 29 SD3-SDW-BA-en-21 – If required, activate the checkbox Carry out optimized reactive power adjustment with Integrated Plant Control. 7. If required, make additional settings in the Advanced project data area. Advanced project data area In this area you can make further settings if required. There are some default settings in this area already in accordance with your settings in the Project data area. Procedure: • Select the [Edit] button in the desired area and adjust the settings. Next steps area Project type Next steps • Select [Configure the PV system] (see Section 6.3.6, page 35). • Select [Define the load profile] (see Section 6.3.2, page 29). PRO • Select [To scenario] (see Section 6.3.4, page 30). 6.3.2 Defining the Load Profile You can select typical load profiles or create and edit your own load profiles. In the menu My Sunny Design > Own load profiles, you can create or manage your own load profiles.

Load profile details area 1. In the Load profile type area, select the required option. You can only select the option Own load profile if you have already created an own load profile (see Section 5.1.6, page 19). 2. In the Load profile drop-down list, select the required load profile. To call up information on the selected load profile, select [Profile information]. 3. If required, adjust the setting in the field Annual energy consumption. 4. To edit the load profile, select the [Edit load profile] button in the Own load profile option und adjust the load profile.

Only for PV systems with self-consumption: Special loads area 1. If you are using a heat pump, activate the checkbox Heat pump and, in the drop-down list, select the use of the heated water. 2. In the Hot water requirement area, enter the number of persons and the hot water requirement. 3. In the Details of building area, enter the type of building, the number of floors and the surface area of each floor. 4. To call up information on the load profile with heat pump, select [Profile information]. The button can only be selected if the Heat pump checkbox is activated.

6 Projects SMA Solar Technology AG User Manual SD3-SDW-BA-en-21 30 Next steps area Project type Next steps • Select [Configure the PV system] (see Section 6.3.6, page 35). • Select [Configure gensets] (see Section 6.3.3, page 30). 6.3.3 Configuring Gensets (PV Hybrid System) Gensets area 1. To adjust the parameters of a genset, select any field in the row of the required genset. ☑ The Genset dialog box opens. 2. If required, change the name of the genset in the Name field. 3. In the Fuel drop-down list, select the fuel for the genset. 4. If required, change the other settings for the genset. 5. Select [Accept changes].

6. To add additional gensets, select [+ Add genset]. 7. To delete a genset, select the trash can symbol in the row of the genset to be deleted. One genset remains permanently present, it cannot be deleted. 8. In the Details area, check whether the gensets can provide sufficient power for the load profile previously selected. Design conditions area 1. In the field Load-related minimum power, enter the minimum power that the gensets are to make available to the loads. You should also take account of the power reserve.

2. In the field Minimum PV power to be expected, enter the minimum PV power to be expected for the PV system location. Next steps area • Select [Go to wire sizing] (see Section 6.3.9, page 38). 6.3.4 Defining a Scenario PRO The information on this page defines the absolute energy requirement and the technical features of the energy system. Details of building area 1. Select the Building type in the building type drop-down list. 2. In the area Substance, select the button [New building] or [Existing building]. 3. In the area Dimension, select the button [Small], [Medium] or [Large]. Depending on the selection, the system components and the absolute energy requirement are adjusted.

4. In the drop-down list Heat transfer system select the system used for space heating.

6 Projects SMA Solar Technology AG User Manual 31 SD3-SDW-BA-en-21 5. If you selected the button [Large] in the Dimension area, in the Feed-in priority area select the system component whose current is primarily fed in. 6. In the Heating energy requirement area, select the [Absolute] or [Specific] button and enter the heating energy requirement per year. 7. If you selected the [Specific] button in the Heating energy requirement area, enter the heated area in the Heated area field. 8. In the Hot water requirement area, enter the average hot water requirement per year in liters. Next steps area • Select [Configure energy system] (see Section 6.3.5 "Configuring System Components", page 31). 6.3.5 Configuring System Components PRO The project page for energy systems serves as a starting point for the configuration of the system components. The page is divided into the central workspace and the area 'key figures relating to the energy system'. The central workspace is divided into the areas ENERGY SYSTEM, GRIDS and LOADS. The key figures relating to the energy system can be found in the lower area. You can access the configuration of the system components either via the main navigation or via the buttons of the respective components in the central workspace. When you move the pointer of the mouse over the arrows between the components, the determined values are shown. The meaning of the various arrows and connecting lines between the components is explained in the bottom section of the central workspace.

Quick configuration and detailed configuration for PV system and battery system For the configuration of the system components PV system and battery system, you can choose between a quick configuration and a detailed configuration. You can use the quick configuration for a simplified configuration of your PV system and battery system. You can provide detailed information in the tab Technical configuration with the detailed configuration. The tab Technical configuration in the detailed configuration for the PV system matches the page Configure PV system (see Section 6.3.6, page 35). The tab Technical configuration in the detailed configuration for the battery system matches the page Configure battery system Section 6.3.7, page 37.

6 Projects SMA Solar Technology AG User Manual SD3-SDW-BA-en-21 32 When you switch from the quick to the detailed configuration, the data from the quick configuration are transferred to the detailed configuration. If a detailed configuration was carried out for one of the two components, you are taken directly to the detailed configuration for the other component as well. Switching to the quick configuration is no longer possible. A B Figure 4: Configure energy system (example) Position Designation Explanation A Central workspace for en- ergy systems In this area, you can access system components and key figures of the energy system. This area is divided into ENERGY SYSTEM, GRIDS and LOADS for a better overview.

B 'Key figures relating to the energy system' area In this area, you can view and configure the key figures of the energy system. Via the Adapt key figures button, you can select up to ten key figures for your energy system. All other figures and information can be viewed on the results page and in the summary. ENERGY SYSTEM area Adapt the building properties 1. Select the BUILDING button in the central workspace. 2. To adapt the project data, select Adapt project data (see Section 6.3.1 "Enter the project data", page 28). 3. To adapt the scenario, select Adapt scenario (see Section 6.3.4 "Defining a Scenario", page 30). Configure the PV system 1. In the central workspace, select the PV SYSTEM button. ☑ The window Quick configuration PV system opens. 2. Make the desired settings in the tab Technical configuration. or Select [To detailed configuration] and make the desired settings in the tab Technical configuration (see Section 6.3.6 "Configuring the PV System", page 35).

3. Make the desired settings in the tabs Investment costs, Financing and Tariffs.

6 Projects SMA Solar Technology AG User Manual 33 SD3-SDW-BA-en-21 4. If you designed the PV system in the quick configuration, select [Apply changes]. 5. If you designed the PV system in the detailed configuration, in the tab Technical configuration select the [To wire sizing] button in the Next steps area. Configure the battery system 1. In the central workspace, select the BATTERY SYSTEM button. ☑ The window Quick configuration battery system opens. 2. If the project is to be designed without battery system, deactivate the checkbox Take battery-storage system into account and select [Apply changes].

3. Make the desired settings in the tab Technical configuration. or Select [To detailed configuration] and make the desired settings in the tab Technical configuration (see Section 6.3.6 "Configuring the PV System", page 35). 4. Make the desired settings in the tabs Investment costs, Financing and Tariffs. 5. If you designed the battery system in the quick configuration, select [Apply changes]. 6. If you designed the battery system in the detailed configuration, in the tab Technical configuration select the [To energy system] button in the Next steps area.

Configure energy management 1. Select the [ENERGY MANAGEMENT] button in the central workspace. 2. Make the desired settings (see Section 6.3.11 "Planning the Energy Management", page 40). 3. Select [Link to energy] system. Configure combined heat and power plant (CHP plant) 1. Select the [CHP plant] button in the central workspace. 2. Make the desired settings in the tabs Technical configuration, Investment costs, Financing and Tariffs. 3. Select [Accept changes]. Configure heat pump 1. Select the [HEAT PUMP] button in the central workspace. 2. Make the desired settings in the tabs Technical configuration, Investment & operating costs and Financing. 3. Select [Accept changes].

Configure boiler 1. Select the [BOILER] button in the central workspace. 2. Make the desired settings in the tabs Technical configuration, Investment & operating costs, Financing and Tariffs. 3. Select [Accept changes]. GRIDS area 1. To configure the grid connection: • Select the button [UTILITY GRID]. • Make the desired changes and select [Apply changes]. 2. To provide information on fuel consumption and costs: • Select the button [FUEL]. • Make the desired changes and select [Apply changes].

6 Projects SMA Solar Technology AG User Manual SD3-SDW-BA-en-21 34 LOADS area 1. To configure loads: • Select the [ELECTRICAL LOADS] button. • Make the desired changes in the tab Load profiles. • Make desired changes in the tab Electricity purchase and costs (before). To copy the electricity purchase from the information provided in the tab Load profiles, activate the checkbox According to load profiles. • Select [Accept changes]. 2. To configure the heating energy demand of the building and the hot water demand: • Select the button [HEAT].

• Make the desired changes in the Heating demand tab. • Make the desired changes in the Fuel (before) tab. To apply the heating energy requirement from the information given in the Heat requirement tab, activate the checkbox According to fuel consumption. • Select [Accept changes]. Area 'key figures relating to the energy system' You can select up to ten key figures for the energetic and economic view on the Energy system page. All other figures and information can be viewed on the results page and in the summary. Procedure: 1. On the Energy system page, select the [Adjust key figures] button. ☑ The Configuration of the key figures display dialog box opens. 2. To restrict the key figures selection, select the required system component from the Category drop-down list. 3. To switch between both key figure types, select the button [Energetic] or [Economic] in the Key figure type area.

4. To delete or add key figures, select the buttons in the Delete/add area. 5. To change the order of the key figures in the list, select the buttons in the area Adapt order. 6. Select [Accept changes]. Create and compare alternative designs You can add alternatives for the design of your project, for example, to compare alternative designs. Procedure: 1. To create an alternative design, select Original > add alternative + in the header. ☑ The project is then included as an alternative in the header. 2. To compare the design of the project with an alternative, select Alternative > compare alternatives in the header.

☑ The Compare suggested designs dialog box opens. 3. To apply an alternative design for a project, select [Apply alternative] in the relevant column. 4. To configure the individual system components, select the respective system component (see Section 6.3.5 "Configuring System Components", page 31). Next steps area • Select [Overview of the results] (see Section 6.3.14 "Overview of the results", page 43).

6 Projects SMA Solar Technology AG User Manual 35 SD3-SDW-BA-en-21 6.3.6 Configuring the PV System PRO The settings on the page Configure PV system always refer to the currently selected subproject. A subproject consists of at least one PV array and at least one inverter per PV array. In the project types PV system with and without self- consumption, off-grid system and PV hybrid system, you can add alternatives for each subproject, for example, to compare alternative designs. PV arrays area 1. To change the name of the subproject, select the button [Rename] on the Configure PV system page, enter the desired name and confirm with [OK].

2. To add a subproject, select [+Add subproject], enter the desired name and confirm with [OK] ☑ The subproject is then added to the drop-down list Subproject. 3. To add an alternative, select [+Add alternative]. ☑ The alternative is added as a tab. 4. Make the following settings in the row of the PV array: • Select the field Manufacturers/PV module and select the required PV module. Select the magnifying glass symbol to use the search. • To call up information on the selected PV module, select the info symbol. • Select the field Number of PV modules/Peak power and determine the size of the PV array using the number of PV modules or the peak power.

• Select the field Orientation/Mounting type and select the required properties. 5. To add an additional PV array: • Select [+Add PV array]. The settings of the existing PV array are copied automatically. • If required, change the settings of the added PV array. You can change the settings for all PV arrays at the same time by activating the checkbox Change all PV arrays in the relevant dialog box for entering changes. 6. To delete a PV array, select the trash can symbol in the row of the PV array. One PV array is always present and cannot be deleted.

Inverter design area In this area, you select suitable inverters for the PV arrays in the current subproject. Procedure: 1. To select inverters manually: • Select [Manual design]. ☑ The dialog box Select an inverter opens. • To restrict the list of displayed inverters, activate the required checkboxes in the Set inverter limits area. • In the area Additional inverters, select the row of the required inverter. ☑ The selected row is displayed in a different color. • Select [Apply inverter].

☑ The selected inverter is added and displayed in the Inverter area. • To add further inverters, select [Manual design]. 2. To select inverters from design suggestions, have design suggestions displayed (see Section 6.3.6.1, page 36). 3. To have the inverters selected automatically by Sunny Design:

6 Projects SMA Solar Technology AG User Manual SD3-SDW-BA-en-21 36 • To restrict the selection of inverters, select [Inverter filter] and activate the required checkboxes. • Select [Automatic design]. ☑ The Design dialog box opens. • If required, change the displacement power factor and the method for calculating design suggestions. • Select [Accept changes]. ☑ The proposed inverters are added to the subproject and displayed in the Inverters area. Inverter area 1. If notes are displayed, observe the notes and solution suggestions. 2. If required, check the design in the Details area. 3. To delete an inverter, select the trash can symbol in the row of the inverter. Next steps area Project type Next steps PRO • To skip optional steps, select [Results overview] (see Section 6.3.14, page 43).

• To carry out optional steps, select [Wire sizing] (see Section 6.3.9, page 38). • To skip optional steps, select [Results overview] (see Section 6.3.14, page 43). • To perform optional steps, select [To the configuration of the storage system] (see Section 6.3.7, page 37). 6.3.6.1 Have Design Suggestions Displayed Requirements: ☐ You must have opened a project and have it planned up to page Configure PV system. ☐ You must have set the required PV arrays on the page Configure PV system. Procedure: 1. On the page Configure PV system, in the Inverter design area, select the button [Design suggestions]. ☑ The Design dialog box opens.

2. If required, adjust the settings in the Design dialog box and select [Accept changes]. ☑ The Design suggestions dialog box opens. 3. To restrict the selection of inverters: • Select the Set inverter limits area and activate the required checkboxes. • Select the Select an inverter area and activate the required checkboxes. • Select [Recalculate]. 4. To change the criterion for sorting the design suggestions, select the required sorting in the Sorting drop-down list (see Section 6.3.6.2, page 37).

5. To compare design suggestions: • In the Selection column, activate the checkboxes of the design suggestions to be compared. • Select [Compare selection]. ☑ The Compare suggested designs dialog box opens. • To adopt a design suggestion, select [Adopt design] in the column of the required design suggestion.

6 Projects SMA Solar Technology AG User Manual 37 SD3-SDW-BA-en-21 • To save a design suggestion as an alternative design, select [Apply as alternative] in the column of the required design suggestion. ☑ Above the area PV arrays, the Original tab is added and also a numbered Alternative tab for each design suggestion. In addition, the button [Compare alternatives] is added to the right of the tabs. 6. To add a design suggestion as an alternative design, activate the checkboxes of the required design suggestions in the Selection column and select [Add selection as an alternative].

☑ Above the area PV arrays, the Original tab is added and also a numbered Alternative tab for each design suggestion. In addition, the button [Compare alternatives] is added to the right of the tabs. 7. To adopt a design suggestion, activate the checkbox of the required design suggestion in the Selection column and select [Adopt design]. ☑ The selected design is displayed in the Inverter area. 6.3.6.2 Setting Criterion for Sorting the Design Suggestions You can select a criterion in Sunny Design to form the basis for the evaluation and sorting of design options. The following criteria are possible: • Energy yield (energetic optimum) • Profitability (in consideration of the nominal power ratio and the inverter share of investment costs) Requirements: ☐ You must have opened a project and have planned the project up to page Configure PV system. ☐ You must have set the required PV arrays on the page Configure PV system. Procedure: 1. On the page Configure PV system, in the Inverter design area, select the button [Design suggestions]. 2. Make the required settings in the Design dialog box.

3. Select [Accept changes]. 4. In the Design suggestions dialog box, select the required criterion in the Sorting drop-down list. The more a design suggestion corresponds to a criterion, the higher up the list it is displayed. 6.3.7 Configuring the Battery System PRO Storage system area 1. If required, activate the checkbox Multicluster-Box on the Battery system page, and select the desired device type of the Multicluster-Box in the drop-down list. 2. Select the desired battery inverter in the drop-down list Devices. 3. With multicluster systems, select [+ add cluster] to add additional clusters. With multicluster systems, all batteries are automatically configured identically.

4. To adjust the parameters of a battery, select the Settings field in the row of the required battery. ☑ The dialog box Configure battery opens. 5. In the drop-down list Batteries, select the desired battery type. 6. If required, change the other settings for the battery. 7. Select [Accept changes]. 8. Check the system compatibility in the Details area.

6 Projects SMA Solar Technology AG User Manual SD3-SDW-BA-en-21 38 Next steps area Project type Next steps • To skip optional steps, select [Results overview] (see Section 6.3.14, page 43). • To carry out optional steps, select [Configuration of genset] (see Section 6.3.8, page 38). PRO • Select [Go to energy system] (see Section 6.3.5 "Configuring System Components", page 31). 6.3.8 Configuring the Genset (Off-Grid System) Genset area 1. To adjust the parameters of a genset, select any field in the row of the required genset. ☑ The Genset dialog box opens.

2. If required, change the name of the genset in the Name field. 3. In the Fuel drop-down list, select the fuel for the genset. 4. If required, change the other settings for the genset. 5. Select [Accept changes]. 6. Check the system compatibility in the Details area. Next steps area • Select [Configure the PV system] (see Section 6.3.6, page 35). 6.3.9 Wire Sizing PRO Overview area 1. If a subdistribution is required in the PV system, activate the checkbox Project subdistribution available (LV3). The Graphic area is adjusted and the AC2 cables tab is added.

2. If an MV transformer is to be present in the PV system, activate the checkbox Medium-voltage line and MV transformer available (MV). The Graphic area is adjusted and the MV transformer tab is added. Configuration area The diagram shows the cable identification in the planned PV system: • DC indicates the cables from the first PV module in the string to the inverter. • LV1 indicates the cables from the inverter to a possible subdistribution, to the MV transformer or to the feed-in point. • LV2 indicates the cables from a possible subdistribution in the subproject to the subdistribution of the total project, to the MV transformer or the feed-in point.

• LV3 indicates the lines from the possible subdistributions to the possible MV transformer or to the feed-in point. • MV indicates the cables from a possible MV transformer to the feed-in point.

6 Projects SMA Solar Technology AG User Manual 39 SD3-SDW-BA-en-21 The tabs DC cables, Cables LV1, Cables LV2, Cables LV3, MV Transformer 1. To take account of the line losses in the yield forecast, choose Enter project data in the main menu navigation and, in the area Advanced project data > Line losses, select the button [Edit] and activate the checkbox DC or AC. 2. Select the tab of the required cable. 3. Select the required fields in the column Cable material, Single length and Cross-section and make the required settings. The values for Current, Voltage, Voltage drop and Rel. power loss are calculated automatically.

Next steps area Project type Next steps • Select [To energy management] (see Section 6.3.11, page 40). • To skip optional steps, select [Results overview] (see Section 6.3.14, page 43). • To carry out optional steps, select [Self-consumption] (see Section 6.3.10, page 39). • To skip optional steps, select [Results overview] (see Section 6.3.14, page 43). • To carry out optional steps, select [To the analysis of energy and power in the system] (see Section 6.3.13, page 42). • Select [To profitability] (see Section 6.3.12, page 42). PRO • Select [Go to energy system] (see Section 6.3.5 "Configuring System Components", page 31).

6.3.10 Determining Self-Consumption Increased self-consumption area In this area, you can select devices to better assess self-consumption. Procedure: 1. To change the selection of devices, select [Devices filter] and activate the required checkboxes. 2. For increased self-consumption with the Sunny Home Manager, activate the checkbox Management of loads with radio-controlled sockets. 3. Configure increased self-consumption with systems for intermediate storage of energy: • Activate the checkbox Temporary storage of surplus solar power. • In the Device column, select the required device. • Select the Settings field in the row of the required device and configure the storage. 4. Configure increased self-consumption with specific loads: • Activate the Specific loads checkbox. The checkbox is already activated if you have selected a heat pump as a load on the page Define load profile. If required, you can adjust the settings here. • In the Device column, select the required device.

• Select the Settings field in the row of the required device and enter the properties.

6 Projects SMA Solar Technology AG User Manual SD3-SDW-BA-en-21 40 Result area In this area, the increased self-consumption details are displayed graphically. Load and load profile analysis area This area is shown if you are logged in as a Sunny Design Pro user. Procedure: • To open the load analysis for the load profile, select [Open load profile]. Next steps area • Select [Plan system monitoring] (see Section 6.3.11, page 40) 6.3.11 Planning the Energy Management PRO Specifications area 1. Depending on the requirements that you have of the PV system monitoring, activate the required checkboxes: Requirement Explanation Optimizing self-consumption You wish to obtain action recommendations for manual switching of loads in order to make optimal use of own PV energy on site (self-consumption).

Analysis of consumption and management of loads You wish to obtain an analysis of your consumption. You also wish to have automatic intelligent switching of loads in order to make optimal use of own PV energy on site. System monitoring via the inter- net and visualization of PV sys- tem data You wish to monitor the PV system via the Internet and visualize the PV system data in the Internet. Online archiving You wish to archive the PV system data in the Internet. Remote diagnosis Yo wish to analyze PV system faults via the Internet. Visualization of PV system data on site You wish to view the PV system data on site. PV system maintenance and pa- rameterization on site You wish to enable maintenance and parameterization of the PV system on site.

Storage of PV system data on site You wish to store the PV system data on site. Connecting external sensors You wish to connect sensors from third-party manufacturers to the PV system (e.g. anemometer, ambient temperature sensor). Measuring global radiation You wish to measure the global radiation. Reading out energy meters You wish to read out the data of the feed-in meter, the PV production meter and the purchased electricity meter.

6 Projects SMA Solar Technology AG User Manual 41 SD3-SDW-BA-en-21 Requirement Explanation Feed-in management You wish to or must participate in feed-in management with the PV system. In accordance with the Renewable Energy Sources Act (EEG) 2012, PV system operators with installed power of 30 kW to 100 kW must participate in feed- in management (variable active power limitation). PV system operators with installed power less than 30 kW have a choice: they can participate in feed- in management or they can limit the active power of their PV system to 70% (fixed active power limitation).

Control of large-scale PV power plants You wish to control and regulate your large-scale PV power plant (connection to a SCADA system). Wireless data transmission You would like to wirelessly call-up the PV system data. Notification in case of distur- bances You wish to be notified if disturbances occur in the PV system. 2. Depending on the requirements on your PV system, activate the required checkboxes: Requirement: Explanation Internet access is available The PV system can be connected to the Internet. Own operation control system is available A control room (SCADA system) is available. S0 meter interface is available An S0 meter interface is available in the PV system. D0 meter interface is available A D0 meter interface is available in the PV system. Design area In this area, you select the communication products for PV system monitoring. Procedure: 1. In order to only use current (not discontinued) communication products in the design, activate the checkbox Only take current communication products into account.

2. You have the following options for selecting the communication products: • To have the communication products selected automatically, select [Automatic design]. • To select communication products from proposals, select [Design alternatives] and then select [Adopt design] in the the column of the required design alternative. • To select a specific communication product for PV system monitoring, select [Add communication product]. If you have activated the checkbox Only take current communication products into account, you can only select current communication products in the list.

3. To remove all added communication products from the Result area, select [Delete system monitoring]. Result area In this area, you obtain an overview of the internal and external communication products used in the project and the type of data transmission. Procedure: 1. If a communication product is to be included in the design alternatives, select the lock symbol next to the communication product. The lock symbol is displayed closed. 2. To undo the setting, select the lock symbol again. 3. To delete a communication product, select [X] next to the communication product.

6 Projects SMA Solar Technology AG User Manual SD3-SDW-BA-en-21 42 Next steps area Project type Next steps • Select [Profitability analysis] (see Section 6.3.12, page 42). PRO • Select [Go to energy system] (see Section 6.3.5 "Configuring System Components", page 31). 6.3.12 Analyze profitability 6.3.12.1 Analyzing Profitability (PV System with and without Self-Consumption) Cost structure area In this area, you can enter details on the PV system costs, financing, electricity purchase costs and the feed-in tariff. No price management is available for PV system monitoring products. You can make default settings for the cost structure in the menu My Sunny Design > Settings > Efficiency and My Sunny Design > Settings > Tariff information. Procedure: • To change the cost structure details for the current project, select [Edit] in the relevant area. Results area • To change the view of the first diagram, select [Savings] or [Cumulative savings]. Next steps area • Select [Results overview] (see Section 6.3.14, page 43). 6.3.12.2 Analyzing Profitability (PV Hybrid Project) Profitability area In this area, the results of the efficiency analysis are displayed. Cash flow area • To change the view of the first diagram, select [Nominal cash flow] or [Discounted cash flow]. The type of cash flow has an effect on the expected amortization period in the Efficiency area. Next steps area • Select [Results overview]. 6.3.13 Analysis of the energy and power in the system Power area In this area, the compatibility of the system configuration will displayed.

6 Projects SMA Solar Technology AG User Manual 43 SD3-SDW-BA-en-21 Procedure: • If notes are displayed, observe the notes and solution suggestions and adjust the design. Energy area In this area, details of the energy flows will be displayed. Solar proportion area In this area, the solar energy flows per month will be displayed. The solar proportion is the combined share of directly consumed and intermediately stored PV energy. Next steps area • Select [Results overview] (see Section 6.3.14 "Overview of the results", page 43). 6.3.14 Overview of the results PRO Information area This area is displayed if information on the design is available. Procedure: • Note the information and adjust the design. Results area 1. Select the required tab to view the results for the PV system or for performance. 2. To save the values from this area as a CSV file, select [Export]. Next steps area Project type Next steps • Select [Project documentation] (see Section 6.3.16, page 44).

PRO • Select [Go to summary] (see Section 6.3.15, page 43). 6.3.15 View summary PRO Project data area • Select the relevant tab to view the project data on location settings, project details, efficiency, temperature settings and grid connection. Key figures area • Select the relevant tab to view the energetic and economic key figures. Information area This area is displayed if information on the design is available.

6 Projects SMA Solar Technology AG User Manual SD3-SDW-BA-en-21 44 Procedure: • Note the information and adjust the design. PV System area 1. Select the relevant tab to view the data on system overview, design, grid connection, performance and conductor dimensioning relating to the PV system or performance. 2. To save the values from this area as a CSV file, select [Export]. Next steps area • Select [Project documentation] (see Section 6.3.16 "Create the project documentation", page 44). 6.3.16 Create the project documentation PRO Sunny Design saves the project documentation as a PDF file. To display PDF documents, you need the Adobe Reader software. You can download Adobe Reader for free on the Internet.

Settings area 1. In the Documents area, activate the checkboxes that are to be contained in the project documentation. 2. If you have saved design alternatives on the Configure PV system page, you can choose between the original design and the design alternatives by selecting Select and activating the required design. 3. In the area Paper size, select the desired paper size. 4. Select [Download project documentation]. Preview area • To scroll through the project documentation preview, select []. Next steps area • To open your personal home page of Sunny Design, select [To personal home page]. 6.4 Create harmonics calculation With the harmonics calculation you can check whether the harmonic currents at the grid-connection point are within the thresholds. The harmonics calculation can be performed single- or multi-phase for SMA inverters of various device types. If you would like a harmonics calculation for medium-voltage systems or if overstepping of the thresholds occurs, please contact the sales department of the SMA subsidiary for your country. When you select a project from the overview, you can edit or delete the harmonics calculation or save the harmonics calculation report as a PDF document.

To display PDF documents, you need the Adobe Reader software. You can download Adobe Reader for free on the Internet. Procedure: 1. Select the option Harmonics calculation on the personal home page in the EXTRAS area. 2. Select the [New harmonics calculation] button in the dialog box Harmonics calculation. 3. To transfer data from an existing project, select [Select project template]. 4. Enter the required project name in the field Project name. 5. If available, enter the registration number of the planned PV system in the Registration number field.

6 Projects SMA Solar Technology AG User Manual 45 SD3-SDW-BA-en-21 6. Enter the editor's name in the Calculation performed by field. 7. In the drop-down list Grid voltage, select the grid voltage. 8. Enter the short circuit power indicated by the grid operator in the Short circuit power field. 9. Enter the total connectable feed-in power indicated by the grid operator in the Connectable feed-in power field. If you did not receive a value, enter a 0. 10. In the area Inverter, select the [+Add inverter] button. ☑ The dialog box Select an inverter opens. 11. To restrict the list of displayed inverters, activate the required checkboxes in the Set inverter limits area. 12. In the area Additional inverters, select the row of the required inverter.

☑ The selected row is displayed in a different color. 13. Select [Adopt inverter]. ☑ The selected inverter is added and displayed in the Inverter area. 14. To add further inverters, select [+add inverters]. 15. Select the desired report template in the Select report template drop-down list. 16. Select [Show report].

7 Glossary SMA Solar Technology AG User Manual SD3-SDW-BA-en-21 46 7 Glossary Energy key figures Specific yield The estimated specific annual yield specifies how much energy the PV system can supply per installed kilowatt peak. Self-consumption The self-consumption specifies the amount of self-generated energy that is not fed in but consumed by the customer. The energy can be consumed immediately or after being stored intermediately. Self-consumption quota The self-consumption quota describes which proportion of the energy generated is used by the customers themselves. Self-sufficiency quota The self-sufficiency quota indicates what proportion of the energy demand can be covered by self-generated energy. Renewable energies share With system components (e.g. heat pump): percentage of the renewable energy of the energy generation. At system level: percentage of renewable energy of the annual total energy consumption.

Generated renewable energy Energy produced from power generating units of the energy system from renewable sources Electrical energy generated Electrical energy produced from the power generating units of the energy system Heating energy generated Thermal energy produced from the power generating units of the energy system per year Electrical energy requirement of the load profiles Sum of the electrical energy demand of all load profiles used in the project per year Heating energy requirement Thermal energy requirement for heating element Hot water energy requirement Thermal energy requirement for the hot water production Total heating energy requirement The annual thermal energy demand for heating and hot water production Total energy requirement The sum of the electrical energy demand from the load profiles used in the project and the thermal components per year Energy consumption heating element Thermal self-consumption of heating element Energy consumption hot water Thermal self-consumption for hot water production Total energy consumption The total annual consumption of electrical energy and energy from fuels

7 Glossary SMA Solar Technology AG User Manual 47 SD3-SDW-BA-en-21 Total fuel energy consumption The total annual energy consumption of fuels Total electrical energy consumption The total annual power consumption is calculated from the purchased electricity and the electric current generated, minus grid feed-in and the change in the energy quantity in the electrical storage between the start and the end of the calculation period. Electricity and fuel consumption The total annual consumption of electrical energy and energy from fuels Total purchased energy The total electrical energy drawn from the grid and energy from fuels Purchased electricity Electrical energy drawn from the utility grid Max. purchased electricity power The maximum value of the electrical power drawn from the grid during the period under review Grid feed-in Electrical energy fed into the utility grid Energy consumption saving percentage Percentage change of the total energy consumption: (before - after)/before x 100. Positive values represent savings. Percentage of purchased energy savings Percentage change of the total purchased energy from electric current and fuels: (before - after)/before x 100. Positive values represent savings.

Reduction of the purchased power peak Change of the maximum value of the electrical power drawn from the grid during the period under review: maximum value before - maximum value after. Positive values represent a reduction. Purchased electricity savings Percentage change of the purchased electricity (before - after)/before x 100. Positive values represent savings. Fuel savings Percentage change of the purchased fuel: (before - after)/before x 100. Positive values represent savings. CO₂ emissions Annual carbon dioxide (CO₂) emission due to using fossil fuels CO₂ reduction Percentage change of the annual CO₂ emission: (before - after)/before x 100. Positive values represent a reduction. Electrical energy withdrawn The electrical energy drawn from the battery system per year Annual nominal energy throughputs of the battery The annual nominal energy throughputs of the battery are calculated from the total electrical energy stored intermediately per year, divided by the battery's nominal energy.

7 Glossary SMA Solar Technology AG User Manual SD3-SDW-BA-en-21 48 Intermediately stored electrical energy The intermediately stored electrical energy in the battery system per year Operating time The operating time is calculated from the ratios of the total energy demand of electric current during a twelve-month period and the highest load within this period. Economic key figures Energy cost savings The absolute energy saving costs versus the previous energy costs (user input) or versus an alternative interpretation. Relative energy cost savings The energy savings costs as a percentage versus the previous energy costs (user input) or versus an alternative interpretation.

Electricity purchase costs avoided The difference in the electricity purchase costs (costs before - costs after) Avoided fuel costs The difference in the fuel purchase costs (costs before - costs after), taking into account the specified inflation rates Heating cost savings The absolute heating cost savings versus the previous heating costs (user input) or versus an alternative interpretation. Relative heating cost savings The heating cost savings as a percentage versus the previous heating costs (user input) or versus an alternative interpretation.

Total savings The total savings over the period under consideration is made up of the total energy cost savings and the feed-in tariffs. The investment costs, the financing costs and the operating costs incl. replacement investments are deducted from this. Here, the inflation rate is included in the operating expenditure and the electricity price increase rate is included in the electricity purchase costs. Furthermore, the degradation of the PV modules is taken into consideration in the feed-in remuneration.

Energy purchase costs The energy purchase costs are composed of the electricity purchase costs and the fuel purchase costs. Electricity purchase costs The costs calculated from the energy drawn from the utility grid according to the selected purchase cost tariff and the tariff components defined therein (e.g. fixed costs or demand rate). The annual rate of electricity price increases is taken into account. Specific electricity purchase costs The costs calculated from the energy drawn from the utility grid per kWh according to the selected purchase cost tariff and the tariff components defined therein (e.g. fixed costs or demand rate). The annual rate of electricity price increases is taken into account.

Fuel costs The calculated fuel purchase costs according to the selected purchase cost tariff and the tariff components defined therein (e.g. fixed costs). The annual rate of price increases is taken into account.

7 Glossary SMA Solar Technology AG User Manual 49 SD3-SDW-BA-en-21 Heating costs The absolute heating costs are composed of the purchase and generation costs. Specific heating costs The specific heating costs are composed of purchase costs and generation costs per kWh. Total energy supply costs The total energy supply costs includes, in addition to the costs for the purchased energy carriers (more specifically, the energy costs) all costs for the internal energy conversion, distribution, storage and disposal. They also include the capital costs, the replacement investments and the operating expenditure. The impacts of the inflation rate and the energy price increase are taken into account throughout the period under review. The total energy supply costs of the operational energy supply are also referred to as input energy costs.

Energy production costs The energy production costs determine the costs for the generation of 1 kWh energy. When calculating the energy production costs, the LCOE calculation method is used. The running costs of the year under review are calculated and added up throughout the observation period. They are then discounted to the reference date using the imputed rate of interest and the one-time costs are added. The discounted costs are divided by the energy amount discounted to the reference date. LCOE is a customary calculation method for power generation costs which is used here to calculate the production costs of all energy types.

Operating costs The operating costs (operating expenditure) of the system component throughout the period under review. These are composed of the annual fixed costs taking into account the inflation rate and the costs for replacement investments due to limited technical service life. This is the sum of operating costs of all system components for the overall system. Investment costs One-time investment costs (CAPEX) for the system component (turnkey PV system) At the overall system level, it is the sum of the investment costs (CAPEX) of all system components Specific investment costs One-time investment costs for the system component per activity unit or capacity, depending on the component under review.

Debt capital The credit costs (borrowing costs) specify the interest charges for a loan at nominal terms. They are independent from the inflation. The total interest charges depend on the type of loan. Residual value The residual value of the system component or of the system at the end of the period under review with linear depreciation and amortization. The service life, the system components and the replacement investments are taken into account in the calculation. Grant amount The subsidy amount stated with the system component or the sum of the subsidy amounts of all system components for the overall system.

Feed-in tariff The feed-in tariff of the electrical energy fed in and possibly self-consumed as well as the sales after expiry of the feed- in tariff according to the selected feed-in tariff. The degradation of the PV modules is taken into account in the calculation for the PV system.

7 Glossary SMA Solar Technology AG User Manual SD3-SDW-BA-en-21 50 Annual return The return is calculated as an internal interest rate (internal rate of return). This effective rate of return reflects the economic advantageousness of the investment as the mathematically calculated return of all payment flows of the investment during the selected period under review compared to the before-after values or an alternative interpretation. Net present value The net present value method is used to add up all income and expenses of a planned system within the selected period under review and with the interest rate adjusted. The income takes into account the feed-in tariffs, energy procurement costs savings, subsidy amounts and credits compared to the before values or to an alternative. The payments in the individual years are discounted to the current point in time with the selected imputed rate of interest. From this, the so-called present values of the payments result. The net present value (or present value) is a possible way of expressing the economic advantageousness of an investment.

Amortization time The amortization period is the time period in years after which the effective savings become positive. Amortization time (discounted) The discounted amortization period is the time period in years after which the discounted savings become positive.

8 Contact SMA Solar Technology AG User Manual 51 SD3-SDW-BA-en-21 8 Contact Deutschland Österreich Schweiz SMA Solar Technology AG Niestetal Sunny Boy, Sunny Mini Central, Sunny Tripower: +49 561 9522‑1499 Monitoring Systems (Kommunikationsprodukte): +49 561 9522‑2499 Fuel Save Controller (PV-Diesel-Hybridsysteme): +49 561 9522-3199 Sunny Island, Sunny Boy Storage, Sunny Backup: +49 561 9522-399 Sunny Central, Sunny Central Storage: +49 561 9522-299 SMA Online Service Center: www.SMA-Service.com Belgien Belgique België Luxemburg Luxembourg Nederland SMA Benelux BVBA/SPRL Mechelen +32 15 286 730 SMA Online Service Center: www.SMA-Service.com Česko Magyarország Slovensko SMA Service Partner TERMS a.s. +420 387 6 85 111 SMA Online Service Center: www.SMA-Service.com Türkiye SMA Service Partner DEKOM Ltd. Şti. +90 24 22430605 SMA Online Service Center: www.SMA-Service.com France SMA France S.A.S. Lyon +33 472 22 97 00 SMA Online Service Center : www.SMA-Service.com Ελλάδα Κύπρος SMA Service Partner AKTOR FM. Αθήνα +30 210 8184550 SMA Online Service Center: www.SMA-Service.com España Portugal SMA Ibérica Tecnología Solar, S.L.U. Barcelona +34 935 63 50 99 SMA Online Service Center: www.SMA-Service.com United Kingdom SMA Solar UK Ltd. Milton Keynes +44 1908 304899 SMA Online Service Center: www.SMA-Service.com Italia SMA Italia S.r.l. Milano +39 02 8934-7299 SMA Online Service Center: www.SMA-Service.com Australia SMA Australia Pty Ltd. Sydney Toll free for Australia: 1800 SMA AUS (1800 762 287) International: +61 2 9491 4200 United Arab Emirates SMA Middle East LLC Abu Dhabi +971 2234 6177 SMA Online Service Center: www.SMA-Service.com India SMA Solar India Pvt. Ltd. Mumbai +91 22 61713888 ไทย SMA Solar (Thailand) Co., Ltd. กรุงเทพฯ +66 2 670 6999 대한민국 SMA Technology Korea Co., Ltd. 서울 +82-2-520-2666

8 Contact SMA Solar Technology AG User Manual SD3-SDW-BA-en-21 52 South Africa SMA Solar Technology South Africa Pty Ltd. Cape Town 08600SUNNY (08600 78669) International: +27 (0)21 826 0699 SMA Online Service Center: www.SMA-Service.com Argentina Brasil Chile Perú SMA South America SPA Santiago de Chile +562 2820 2101 Other coun- tries International SMA Service Line Niestetal 00800 SMA SERVICE (+800 762 7378423) SMA Online Service Center: www.SMA-Service.com

www.SMA-Solar.com