Power plant monitoring for reliable performance and safe investment

1. Power plant monitoring forreliable performance and safe investment Grid-ConnectedPV Systems – Business and TechnologicalOpportunitiesandDevelopments in Indonesia5 May 2014, Jakarta, Indonesia www.skytron-energy.com

2. Neuhardenberg – Germany / Enerparc, 76.57 MWp, 2012 & pv backoffice, 61.72 MWp, 2013 250 ha or 618 ac 350 Football Fields

3. Project Price Development Development of Project EPC Prices Module Price BOS Price

4. Monitoring?

5. Monitoring of Power Production in Solar PV 01 02 03 04 Why? Situation? How? Andnow?

6. Why

7. Why Damaged Modules (mounting, manufacturing) Lightning Bad Installation Module Degradation

8. Why LessEfficient String Performance Animal Weed & Plant Dust, Dirt & Shadowing

9. Why Voc = 900 V 6 Inverter Down 3 Voperating 4 Clouds(identicalvariationsin currentandirradiationcurves) “Don‘t let thesun go down on me” 2 7 Clouds 5 1 Powerfailure no I

10. Why? Who IsInterested? Secure Investments & ROI Investors & Banks Insurances Safety & Reliability EPC & Plant Operators Maximum Yields O&M / ControlRoom Efficiency & Availability GridStability & Service Grid Operator

11. Remote Control of Power Production in Solar PV 01 02 03 04 Why? Situation? How? Andnow?

12. Situation Source: MEMR 2013

13. Situation QUALITY COUNTS Sample Plant : 51 MW DC Installed / 75 Central Inverters / 9528 Strings Located in Indonesia(adaptedto sample plant) 1800 kWh/kWp in 2013 PPA 0.10 USD/kWh

14. Remote Control of Power Production in Solar PV 01 02 03 04 Why? Situation? How? And now?

15. How? Know what is going on in the plant! Measure Collect Save Calculate Manage Visualize Analyze Control Instrumentation and Control, orMonitoring, Control and Supervision “Monitoring”

16. How? Maintain a comprehensive plant database! Monitoring: Generator Field All electrical quantities (string currents, voltages) Ambient conditions – solar irradiation, weather Monitoring: Inverters Monitoring should be independent of inverter type and make

17. How? Supervise the entire plant! Control Room (SCADA) Long-term data storage ( = Data Hosting)Data maintenance and analysis over entire plant life cycle Data acquisition, locally, on site (= data logging)Short-term data storage (weeks): 1-minute mean values Monitoring of the PV generatorHigh resolution, high precision → real-time monitoringString currents: 100 ms scan rate, 0.5% precision

18. How? Keep the power feed under control! System Overview 04 SUPERVISORY LEVEL PVGuard® EnergyGuard skycontrol 03 CONTROL LEVEL 02 DATA ACQUISITION LEVEL skylog® ArrayGuard®StringGuard®skyCONNi® 01 SENSOR LEVEL

19. Remote Control of Power Production in Solar PV 01 02 03 04 Why? How? Example Andnow?

20. skytron energy GmbH Committed to “Renewables” solar city Award (Stadt Berlin) Environment Award (Stadt Berlin) 1995 1998 1999 2008 2012 2012 and 2013:Nominated for Intersolar Award for our skycontrol power plant controller Nominated for eco design Award(Austria) Intersolar Award for StringGuard® String Current Monitoring PVGuard®Control Room Platform (SCADA)

21. 4.5 GWpworldwiderely on skytron® energy BELGIUM 10.4 MWp CANADA 67.9 MWp UNITED KINGDOM 50.3 MWp GERMANY 2 459.7 MWp USA 5.8 MWp FRANCE 191.6 MWp CZECH REPUBLIC 72.1 MWp UKRAINE 751.6 MWp RUSSIA 1MWp SPAIN 70.9 MWp ROMANIA 154.9 MWp INDIA 296 MWp ITALY 267.5 MWp ISRAEL 4.1 MWp MALAYSIA 5.4 MWp SLOVAKIA 2 MWp THAILAND 18.1 MWp BULGARIA 8.2 MWp URUGUAY 1.8 MWp GREECE 7.2 MWp KUWAIT 0.117 MWp TONGA 1 MWp CHILE 31.7 MWp SAUDI ARABIA 0.15 MWp QATAR 0.7 MWp MAURITIUS 15 MWp AUSTRALIA 0.13 MWp OFFICES: DALLAS / SANTIAGO DE CHILE / BERLIN / CAPE TOWN / BANGALORE / SINGAPORE / BEIJING

22. Positioning Customers – Samples Global Customer Base and Long-term Relations Germany Europe Asia US

23. Worldwide Service & Support Operation & Maintenance Service - Fulfilling Your Needs - • WorkshopsO&M Consulting • Sustainable Training&Set Up • Our Hotline • For Rapid Support • Project Engineering • Data Logging Planning • Maintenance • Fresh Cell Therapy • Commissioning • Optimum Start • Control Room • Everything Under Control • Avoid expensive retrofitting from the outset - depending on the installation site and the applied PV plant components, our project engineering team plans all the measurement points that require monitoring. • So as to be able to react quickly and competently to your requests in the case of an emergency, we provide a number of ways for you to quickly reach the right contact person • Extend the lifecycle of your PV power plant and the warranty of your installed components! Our maintenance team inspects, repairs and updates your power plant on a continuous basis. Our highly-trained control room team, with its extensive experience in renewable energies, provides permanent management, monitoring, documentation and analysis of your PV power plant. • skytron PV plant monitoring and control solutions are comparatively unique in the young solar market. For a good introduction and to cover the basics of our monitoring concept, we offer regular training workshops at our head office in Berlin. • We provide the complete configuration of necessary technology, data communication and data banks, in addition to the adjustment of the power plant control system to meet the requirements of the local public utility company.

24. Forecast Integration • Forecast capabilities are already included and will be enhanced continuously • Astate-of-the-art photovoltaic power plant productionprognosisisavailableforall plantsmonitored in PVGuard® • The self-learningforecastalgorithmdoesn‘tneedany plant specificconfiguration • Prognosis isbased on high qualityweatherforecast • Forecast includesenergyyield(plant level), radiationandtemperature • Uptosixdays in onehourresolution Yield Prognosis Example: green- plant power blue - prognosis

25. “The bitterness of poor quality is remembered long after the sweetness of low price has faded from memory.” Aldo Gucci quote Monitoring & Control PLUS Cooperative System Engineering YES, WE CAN!