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

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

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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

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More than 60,000 grid connected PV-Home- Storage systems in Germany – Lessons Learned

IRENEC 2017 Conference, Istanbul, Turkey, 20. May 2017 Kai-Philipp Kairies, Jan Figgener, Dirk Magnor, Hendrik Axelsen, Eberhard Waffenschmidt, Dirk Uwe Sauer

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D.U.Sauer, ISEA, RWTH Aachen

  • E. Waffenschmidt, CIRE, TH-Köln

et al., IRENEC 2017

Sometimes 85% RE in the grid

Grafic: agora-energiewende [1]

80 60 40 20 0:00 4:00 8:00 12:00 16:00 20:00 Time t / h Power P / GW Conventional Power Solar Biomass Hydro Wind Export Consumption 9.May 2016

85%

  • f the comsumption

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D.U.Sauer, ISEA, RWTH Aachen

  • E. Waffenschmidt, CIRE, TH-Köln

et al., IRENEC 2017

Motivation: Being independent

Source: G.Mester for SFV [2]

All made by myself

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D.U.Sauer, ISEA, RWTH Aachen

  • E. Waffenschmidt, CIRE, TH-Köln

et al., IRENEC 2017

10 20 30 40 50 60 2004 2006 2008 2010 2012 2014 2016 2018 Feed-in tariff and price/ €ct/kWh Year

EEG feed-in tariff PV <10kWpk

EEG feed-in tariff

References: STAWAG Aachen and www.SFV.de, 8.5.2017

10 20 30 40 50 60 2004 2006 2008 2010 2012 2014 2016 2018 Feed-in tariff and price/ €ct/kWh Year

EEG feed-in tariff PV <10kWpk

EEG feed-in tariff Electricity price household (exemplary)

References: STAWAG Aachen and www.SFV.de, 8.5.2017

Motivation: Increase of self-consumption

Cost Margin for storage

4

[3]

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D.U.Sauer, ISEA, RWTH Aachen

  • E. Waffenschmidt, CIRE, TH-Köln

et al., IRENEC 2017

Motivations for PV batteries

5

20 40 60 80 100 ratio in percentage

simultaneous retrofitted

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

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D.U.Sauer, ISEA, RWTH Aachen

  • E. Waffenschmidt, CIRE, TH-Köln

et al., IRENEC 2017

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Market Incentive Program

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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

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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

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D.U.Sauer, ISEA, RWTH Aachen

  • E. Waffenschmidt, CIRE, TH-Köln

et al., IRENEC 2017

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Market trends

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D.U.Sauer, ISEA, RWTH Aachen

  • E. Waffenschmidt, CIRE, TH-Köln

et al., IRENEC 2017

Installations of PV Battery Systems in Germany since 2013

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D.U.Sauer, ISEA, RWTH Aachen

  • E. Waffenschmidt, CIRE, TH-Köln

et al., IRENEC 2017

2016: More PV battery systems than electric cars

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[1] [2]

■ 11.410 new electric vehicles in Germany ■ min 15.000 installations of PV Battery Systems

[14] [13] [14]

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D.U.Sauer, ISEA, RWTH Aachen

  • E. Waffenschmidt, CIRE, TH-Köln

et al., IRENEC 2017

New Products enter the market frequently: Good marketing

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[5] [6] [4] [7]

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D.U.Sauer, ISEA, RWTH Aachen

  • E. Waffenschmidt, CIRE, TH-Köln

et al., IRENEC 2017

Development of retail-prices (incl. VAT)

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18% p.a.

n= 8

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D.U.Sauer, ISEA, RWTH Aachen

  • E. Waffenschmidt, CIRE, TH-Köln

et al., IRENEC 2017

Development of battery technologies

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0% 20% 40% 60% 80% 100% New installed systems Lead Li-Ion Time

2013 2014 2015 2016 Q2 Q3 Q4 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q1

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D.U.Sauer, ISEA, RWTH Aachen

  • E. Waffenschmidt, CIRE, TH-Köln

et al., IRENEC 2017

Battery technologies

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Lead Lithium 2 4 6 8 10 12 14 16 18 20 22 24

Capacity [kWh]

installed capacity usable capacity

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SLIDE 16

D.U.Sauer, ISEA, RWTH Aachen

  • E. Waffenschmidt, CIRE, TH-Köln

et al., IRENEC 2017

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Feed-in limitation

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SLIDE 17

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

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D.U.Sauer, ISEA, RWTH Aachen

  • E. Waffenschmidt, CIRE, TH-Köln

et al., IRENEC 2017

Solution: Feed-in limitation

Optimizing self-consumption: ■ Start battery charging early in the morning ■ Feed-in if battery is full

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Grid relieving operation: ■ Delay battery charging ■ Cap peak production during noon

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D.U.Sauer, ISEA, RWTH Aachen

  • E. Waffenschmidt, CIRE, TH-Köln

et al., IRENEC 2017

Impact of feed-in limitation

Feed-in limitation:

  • Without storage:

10% to 20% loss of annual energy

  • With storage:
  • nly <5% loss of

annual energy

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Annual feed-in solar energy

Feed-in limit Pmax / Ppeak Annual feed-in energy Emax / Epv

Without storage With storage

Requirement for KfW funding: Feed-in limit 60% until 2015 50% since 2016

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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

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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

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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/

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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

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