Changes of energy structure in Germany. Mr. Wolfgang Bühring, Director Stadtwerke Speyer GmbH Smart Community Summit Tokyo, June 13 th 2018

Transcription

1 Changes of energy structure in Germany Mr. Wolfgang Bühring, Director Stadtwerke Speyer GmbH Smart Community Summit Tokyo, June 13 th 2018

2 Contents Introduction of German electricity Market and Energiewende City of Speyer and Stadtwerke Speyer GmbH Two examples for structural change induced by Energiewende Nedo Smart Community Project Stadtwerke-model an example for integrated energy solutions - 2 -

3 Overview on German electricity market Liberalization of German electricity market in TWh; 208 GW 760 electricity producers (>10MW without small renewable plant operators) 259 participants on EEX (German electricity exchange) 4 big TSO`s 884 DSO`s More than 1,200 Retailers of electric energy Generation Trading Transport Distribution Retail - 3 -

4 Energiewende targets 2020: 40% less greenhouse gases compared to : Switch off of last nuclear power plant 2025: 40-45% renewable electricity 2030: 65% renewable electricity 2050: 50% less primary energy consumption compared to

5 The city of Speyer Urban municipality in the state of Rhineland-Palatinate 42.6 km² 50,000 citizens - 5 -

6 Speyer's 100% renewable targets 2008: Climate and energy guideline passed at the city council 2010: 100% renewable target decided. Timeline: % renewable electricity and % renewable heat (German federal Government: 65% renewable electricity in 2030) - 6 -

7 Stadtwerke Speyer GmbH Integrated public utility company 100% owned by City of Speyer - 7 -

8 Energiewende the game changer Large-scale power plants transport to the end-customer LV MV HV End-consumer before EHV Energiewende future LV MV HV EHV Prosumer* * Producer + Customer Prosumer Decentralized Prosumers Transformation only if no consumption or storage Offshore wind and few largescale power plants - 8 -

9 Two examples of structural change - 9 -

10 Expansion of transmission system Geographical imbalance of renewables and load Decarbonisation and nuclear shutdown North South

11 Geographical imbalances of renewables and load

12 Nuclear shutdown and decided grid expansion projects

13 Two examples of structural change

14 - 14 -

15 Evolution of the PV prosumer Before grid parity: Consumers and Producers ROI of producer based on FIT After gird parity of PV: Self consumption of PV electricity 1 st stage prosumer After gird parity of PV incl. storage: Maximisation of PV self consumption with storage systems 2 nd stage prosumer

16 Example 2 nd stage prosumer 4,052 kwh/a 5.41 kwp 4.8 kwh Photo: Timo Amberger Investment EUR (2,051,500 JPY) Screens from SMA SUNNY PORTAL Evening May 22 nd

17 Example 2 nd stage prosumer energy balance Consumption Production From grid 43% Autarky 57% Feedin 52% Selfconsumption 48% Screens from SMA SUNNY PORTAL May 22 nd 2018 Still 2,549 kwh/y excess electricity (feed-in) Integrated energy solutions ( Sektorkopplung ) necessary E.g. Adding heating and e-mobility applications (Evolution to stage X Prosumer on the LV-Layer)

18 Speyer Project May 2014: LOI July 2015: MOU May 2016: Opening Ceremony March 2018: Asset transfer to SWS

19 Two Project sites Type A Type B HEMS HEMS

20 Impressions of installation Type A Type B

21 Summary of results Very heterogeneous pattern of consumption Self consumption % (25 62% improvement by usage of HEMS, heat pump and battery) 50 73% autarky. In Type B 100% autarky from April to September! Further development to improve economic feasibility (e.g. VPP, battery sharing, P2P direct selling, EV adding)

22 GreenPowerGrid Green balancing group Green residual current procurement / excess current sale Green electricity customers Data Metering Data Schedule Control signal 2nd stage prosumer 1st stage prosumer Consumer

23 Example: Mieterstom the Stadtwerke model Standard constellation of apartment building All consumed electricity from Grid and free choice of supplier

24 Example: Mieterstom the Stadtwerke model Apartment Building with PV All consumed electricity from Grid and free choice of supplier All PV energy fed into grid. Payback for PV operator by feed in tariff

25 Example: Mieterstom the Stadtwerke model Apartment Building with PV and Stadtwerke model PV energy delivered to apartments, only surplus fed to grid Participants purchase PV-grid electricity mix from PV operator Free choice enables non-participants to purchase electricity from another supplier from grid

26 Regulation determines the framework New Business models need a friendly environment Photo: Sandro Halank, Wikimedia Commons licence: CrativeCommons BY-SA 3.0 Original file: here Funding for Mieterstrom in EEG since July 25 th 2017 First Time that government named Stadtwerke explicit in coalition agreement from February 2018 improve the framework for the interconnection between heat, mobility and electricity in connection with storage technologies Due to the locality Stadtwerke and DSO`s have a key role in Sektorkopplung

27 Speyer Smart Community Project an example for Sektorkopplung Vehicle to grid E-mobility Natural gas car Electricity Hydrogen Synthetic natural gas Heat supply CO 2 Picture: BWE Bundesverband WindEnergie Original file: here PV and Wind Grid Electrolysis Methanation Natural gas grid Power to heat Battery storage Pumpand air pressure storage Hydrogen fuel cell car Household, commerce and industry Steam power plants and CHP

28 DESIGNETZ Examples of integrated energy solutions Power-to-gas plant of Mainzer Stadtwerke Worlds largest PEM Power-to-Gas site (6 MW) Management of grid bottlenecks Supply ancillary services John Deere project SESAM-Farm Sustainable Energy Supply for Agricultural Machinery Energy autonomous farm (on balance sheet) Novel flexible Storage and option for flexibility Optimization by energy management system Additional information

29 Thank you Wolfgang Bühring Stadtwerke Speyer GmbH Georg-Peter-Süß-Str Speyer, Germany buehring@sws.speyer.de