More than 60,000 grid connected PV-Home- Storage systems in Germany - PowerPoint PPT Presentation

More than 60,000 grid connected PV-Home- Storage systems in Germany – Lessons Learned Kai-Philipp Kairies, Jan Figgener, Dirk Magnor, Hendrik Axelsen, Eberhard Waffenschmidt , Dirk Uwe Sauer IRENEC 2017 Conference, Istanbul, Turkey, 20. May 2017

Sometimes 85% RE in the grid 80 9.May 2016 60 Consumption Export Power P / GW Conventional 85% 40 Power of the comsumption Solar 20 Wind Hydro Biomass Grafic: agora-energiewende [1] 0 0:00 4:00 8:00 12:00 16:00 20:00 Time t / h 2 D.U.Sauer, ISEA, RWTH Aachen E. Waffenschmidt, CIRE, TH-Köln et al., IRENEC 2017

Motivation: Being independent All made by myself Source: G.Mester for SFV [2] 3 D.U.Sauer, ISEA, RWTH Aachen E. Waffenschmidt, CIRE, TH-Köln et al., IRENEC 2017

Motivation: Increase of self-consumption EEG feed-in tariff PV <10kWpk EEG feed-in tariff PV <10kWpk 60 60 Feed-in tariff and price/ €ct/kWh Feed-in tariff and price/ €ct/kWh 50 50 EEG EEG feed-in tariff feed-in tariff 40 40 Electricity price 30 30 household (exemplary) Cost Margin 20 20 for storage 10 10 References : References : STAWAG Aachen and STAWAG Aachen and [3] www.SFV.de, 8.5.2017 www.SFV.de, 8.5.2017 0 0 2004 2004 2006 2006 2008 2008 2010 2010 2012 2012 2014 2014 2016 2016 2018 2018 Year Year 4 D.U.Sauer, ISEA, RWTH Aachen E. Waffenschmidt, CIRE, TH-Köln et al., IRENEC 2017

Motivations for PV batteries 100 simultaneous retrofitted 80 ratio in percentage 60 40 20 0 Hedging against increasing electricity costs Lapse of guaranteed feed in tariff Contribution to the German Energiewende Protection against power failures Safe investment General interst in storage technology 5 D.U.Sauer, ISEA, RWTH Aachen E. Waffenschmidt, CIRE, TH-Köln et al., IRENEC 2017

Market Incentive Program 6 D.U.Sauer, ISEA, RWTH Aachen E. Waffenschmidt, CIRE, TH-Köln et al., IRENEC 2017

Market incentive program for PV-batteries ■ Issued by German Federal Governement Performed by KfW Bank ■ Purpose : Stimulate market -> Stimulate Market -> Reduce cost ■ Initiated 2013 Re-launched 2016 until 2018 ■ Funding by - Reduced interest rates - Repayment grant on investment, decreasing 3%-points per month 25% at begin of re-launch 19% in May 2017 7 D.U.Sauer, ISEA, RWTH Aachen E. Waffenschmidt, CIRE, TH-Köln et al., IRENEC 2017

Market incentive program for PV-batteries Requirements ■ Feed-in limitation 50% of installed PV power ■ 10 years warranty ■ Registration with monitoring program 8 D.U.Sauer, ISEA, RWTH Aachen E. Waffenschmidt, CIRE, TH-Köln et al., IRENEC 2017

Market trends 9 D.U.Sauer, ISEA, RWTH Aachen E. Waffenschmidt, CIRE, TH-Köln et al., IRENEC 2017

Installations of PV Battery Systems in Germany since 2013 10 D.U.Sauer, ISEA, RWTH Aachen E. Waffenschmidt, CIRE, TH-Köln et al., IRENEC 2017

2016: More PV battery systems than electric cars [14] [1] [14] [2] [13] ■ min 15.000 installations of ■ 11.410 new electric vehicles PV Battery Systems in Germany 11 D.U.Sauer, ISEA, RWTH Aachen E. Waffenschmidt, CIRE, TH-Köln et al., IRENEC 2017

New Products enter the market frequently: Good marketing [5] [4] [6] [7] 12 D.U.Sauer, ISEA, RWTH Aachen E. Waffenschmidt, CIRE, TH-Köln et al., IRENEC 2017

Development of retail-prices (incl. VAT) 18% p.a. n= 8 13 D.U.Sauer, ISEA, RWTH Aachen E. Waffenschmidt, CIRE, TH-Köln et al., IRENEC 2017

Development of battery technologies 100% 80% New installed systems Lead Li-Ion 60% 40% 20% 0% Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 2013 2014 2015 2016 Time 14 D.U.Sauer, ISEA, RWTH Aachen E. Waffenschmidt, CIRE, TH-Köln et al., IRENEC 2017

Battery technologies 24 22 20 installed capacity 18 usable capacity Capacity [kWh] 16 14 12 10 8 6 4 2 0 Lead Lithium 15 D.U.Sauer, ISEA, RWTH Aachen E. Waffenschmidt, CIRE, TH-Köln et al., IRENEC 2017

Feed-in limitation 16 D.U.Sauer, ISEA, RWTH Aachen E. Waffenschmidt, CIRE, TH-Köln et al., IRENEC 2017

Problem: Grid overload Optimizing self-consumption: ■ Start battery charging early in the morning ■ Feed-in if battery is full 17 D.U.Sauer, ISEA, RWTH Aachen E. Waffenschmidt, CIRE, TH-Köln et al., IRENEC 2017

Solution: Feed-in limitation Optimizing self-consumption: Grid relieving operation: ■ Start battery charging early in ■ Delay battery charging the morning ■ Cap peak production ■ Feed-in if battery is full during noon 18 D.U.Sauer, ISEA, RWTH Aachen E. Waffenschmidt, CIRE, TH-Köln et al., IRENEC 2017

Impact of feed-in limitation Feed-in limitation: Annual feed-in solar energy • Without storage: 10% to 20% loss of annual energy Annual feed-in energy Emax / Epv • With storage: only <5% loss of annual energy With storage Without storage Requirement for KfW funding: Feed-in limit 60% until 2015 50% since 2016 Feed-in limit Pmax / Ppeak 19 D.U.Sauer, ISEA, RWTH Aachen E. Waffenschmidt, CIRE, TH-Köln et al., IRENEC 2017

Publication of annual report 2016 ■ Results of this presentation can be found in the current annual report of Speichermonitoring ■ Among others: List of manufacturers, typical system design measured self- consumption and autarky, … ■ PDF version is publicly available: www.speichermonitoring.de 20 D.U.Sauer, ISEA, RWTH Aachen E. Waffenschmidt, CIRE, TH-Köln et al., IRENEC 2017

Summary ■Incentive program is supporting market introduction ■Synergies used: □ Self-consumption □ Avoid grid overload 21 D.U.Sauer, ISEA, RWTH Aachen E. Waffenschmidt, CIRE, TH-Köln et al., IRENEC 2017

The Presenter Prof. Dr. Eberhard Waffenschmidt Electrical Grids, CIRE - Cologne Institute for Renewable Energy Betzdorferstraße 2, Room ZO 9-19 50679 Cologne, Germany Tel. +49 221 8275 2020 eberhard.waffenschmidt@th-koeln.de https://www.fh-koeln.de/personen/eberhard.waffenschmidt/ 22 D.U.Sauer, ISEA, RWTH Aachen E. Waffenschmidt, CIRE, TH-Köln et al., IRENEC 2017

Image sources [1] „Agorameter“, Agora Energiewende, download 1.5.2017, https://www.agora-energiewende.de/de/themen/-agothem- /Produkt/produkt/76/Agorameter/ [2] Gerhard Mester, “Karikaturen zur Energiewende”, Website of SFV, download 17.5.2017, https://www.sfv.de/artikel/karikaturen_zur_energiewende.htm [3] Susanne Jung, “EEG-Vergütung im Überblick”, Solarenergie Förderverein Deutschland e.V. (SFV), data download 17.5.2017, http://www.sfv.de/lokal/mails/sj/verguetu.htm and private electricity bill of E. Waffenschmidt, provided by STAWAG, Aachen, Germany. [4] http://sustainnovate.ae/resources/others/_pageimage/SOLARWATT-MyReserve-side-wall-bd.jpg [5] http://core0.staticworld.net/images/article/2015/06/1145828_2350932_1024_683_15c589_05-100590351- primary.idge.jpg [6] http://cdn.idigitaltimes.com/sites/idigitaltimes.com/files/styles/image_embed/public/2015/05/01/tesla-home- battery-release-nears-price-models-storage-and-other-things-know-about.jpg [7] http://sustainablerace.com/wp-content/uploads/2015/06/1434094402265_all-in-one-c01-e1434132309117.jpg Unless otherwise stated, all used pictures are property of the Institute for Power Electronics and Electrical Drives (ISEA) at Aachen University (RWTH Aachen) or by E. Waffenschmidt 23 D.U.Sauer, ISEA, RWTH Aachen E. Waffenschmidt, CIRE, TH-Köln et al., IRENEC 2017