Energy-Mix and Power Plant Technology in Europe and Germany

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1 Institut für Wärmeund Brennstofftechnik Energy-Mix and Power Plant Technology in Europe and Germany Power Plant Technology Forum Hannover Messe Prof. Dr. techn. Reinhard Leithner Institut für Wärme- und Brennstofftechnik Technische Universität Braunschweig

2 Worldwide Potential of Renewable Energy solar geothermal water&sea biomass wind cosumption Source: Forschungsverbund Sonnenergie,

3 Geographical Distribution of Renewable Energy in Europe Economical Potential of Electricityproduction in TWh/y EU-27 consumption in 2020 ca TWh/y, Photovoltaics and Solarthermal plants Source: Zacharias,P.: Netzintegration der erneuerbaren Energien Steuerung der Energieflüsse, Forschungsverbund Sonnenenergie, Fachtagung 2006

4 Decline of Installed Capacity EU-25 in GW Installed Power EU-25 in GW Wind Coal, Oil, Gas Nuclear Water Add on Compensation Quelle: VGB Powertech 2006

5 Potentials and Use of renewable Energy in Germany Potentials 2006 total german electricity consumption ca. 640 TWh/a heat consumption ca TWh/a Use in 2002 Windenergy 168 TWh/a Aims of German government till % electricity from renewables till % primary energy from renewables Source: BMU und IE 2002

6 Decline of power plants in Germany nuclear phase out Installed Power in MW S. Kohler Entwicklung der Kraftwerks-und Netzplanung in Deutschland bis 2020, DENA, Konferenz Kraftwerke und Netze für eine nachhaltige Energieversorgung. Berlin,

7 Discrepance between production and consumption Difference between production Solution of Additional costs and consumption of energy problem by because of concerning Place transport investments in plants, grids Time storage availability, usage Energy form transformation efficiency (electricity, heating, cooling (temperature level)) personnel

8 Renewable Energy Balancing Production and Demand Biomass, Biooil, Biogas Geothermal Energy Hydropower Ocean Energy Photovoltaic Solarthermal Energy Production balancing demand Limited balancing of demand and production Production according weather - Balancing by transport and storage Wind Energy

9 Vision of an Euro-Mediterranean Power-Network Source: Trieb, F. et.al.: Potenziale, Standortanalysen, Stromtransport, Forschungsverbund Sonnenenergie, Themen 96/97,

10 Long Term Characteristics of Power Consumption Power in GW Quelle: M.Popp: Speicherbedarf bei einer Stromversorgung mit erneuerbaren Energien, Springer 2010, ISBN

11 Short Term (one week) Characteristic of Power Consumption So 00 So 12 Mo 00 Mo 12 Di 00 Di 12 Mi 00 Mi 12 Do 00 Do 12 Fr 00 Fr 12 Sa 00 Sa 12 Power Netzlast in GW in GW Germany 26 Deutschlan th CW d 26. KW Quelle: M.Popp: Speicherbedarf bei einer Stromversorgung mit erneuerbaren Energien, Springer 2010, ISBN

12 Characteristics of Wind Energy in Germany 2005 Usage ratio ca. 20% Quelle: M.Popp: Speicherbedarf bei einer Stromversorgung mit erneuerbaren Energien, Springer 2010, ISBN

13 Power Characteristic and Storage Content (Integral) Example Power Differnce to Mean Value Leistungsabweichung 60% 50% 40% 30% 20% 10% 0% -10% -20% -30% -40% -50% -60% 0,15 0,10 0,05 0,00-0,05-0,10-0,15 Storage Ladungsabweichung Content in [Tagesladungen] Mean Dayloads Pabw-2 Law Zeit [h] time [h] Quelle: M.Popp: Speicherbedarf bei einer Stromversorgung mit erneuerbaren Energien, Springer 2010, ISBN

14 Long Term ( ) Caracteristic of Wind Power in Germany Integrated Fictive Storage Content Storage Content in Mean Dayloads Quelle: M.Popp: Speicherbedarf bei einer Stromversorgung mit erneuerbaren Energien, Springer 2010, ISBN

15 Long Term ( ) Caracteristics of Wind Power in Europe (Integrated) Fictive Storage Contents Storage Content in Mean Dayloads Quelle: M.Popp: Speicherbedarf bei einer Stromversorgung mit erneuerbaren Energien, Springer 2010, ISBN

16 Long Term ( ) Caracteristics of Solar Power in Europe (Integrated) Fictive Storage Contents Storage Content in Mean Dayloads Quelle: M.Popp: Speicherbedarf bei einer Stromversorgung mit erneuerbaren Energien, Springer 2010, ISBN

17 Combination of Wind and Solar Storage Contents Storage Content in Mean Dayloads Quelle: M.Popp: Speicherbedarf bei einer Stromversorgung mit erneuerbaren Energien, Springer 2010, ISBN

18 Storage Capacity Needed only wind and solar energy used Wn50 Usage ratio of wind plants 50% Storage capacity is reduced when biomass biooil biogas geothermal energy etc. are used as back up Storage Speicherbedarf Content Needed in Tagesladungen in Mean Dayloads % 10%20%30%40%50%60%70%80% Wn50 S160 of Wn50 S160 FnB Wn50 SnB of Wn50 SnB F50 Kn50 S160 of Kn50 S160 F50 Wn50 SnB e40 F160 Kn50 SnB e40 F160 Wn20 S160 FnB (39) Wn50 S160 of (39) Wn50 S160 FnB (39) Sol S500 of Sol S500 FnB Kn20 S160 of Kn20 S160 FnB Kn50 S160 of Kn50 S160 FnB Erzeugungsreserve Production Capacity Surplus related to mean consumption Quelle: M.Popp: Speicherbedarf bei einer Stromversorgung mit erneuerbaren Energien, Springer 2010, ISBN

19 Electricity Storage Possibilities Physical: Electrical: Superconducting Magnetic Ring Storage, Super Caps Gravity: Pumped hydro storage power plant, η=0,9 0, % Pressure: Compressed Air Energy Storage CAES with Air Turbine or Combined Cycle or Air driven Motor Rotation: Flywheels Etc. Electrochemical: Etc. Essential Issues: Batteries Metal-Air-Cells Redox-Flow Batteries Fuel Cell (η=0,5-0,6) after Electrolysis (η=0,6-0,7) Capacity Power Efficiency Cycles Costs actually only pumped hydro and CAES fulfill requirements

20 Pump Storage Plant Goldisthal Thuringia Volume: 12 Mio m 3 Height: 300 m 8 h full load operation ca MWh 0,5 % of Mean daily Consumption of Germany Electricity consumption in Germany 2009 ca. 600 Mio MWh Mean Power in Germany 2009: 68 GW Mean Daily Consumption 1644 GWh Source:

21 Pumped Hydro Plant Ideas Pumped Hydro Plants in Norway In the Energy Research Center of Lower Saxony EFZN in Goslar research is done on pumped hydro plants in old mines e.g. in the Harz

22 Ringwall Storage for flat land for deep sea Quelle: M.Popp: Speicherbedarf bei einer Stromversorgung mit erneuerbaren Energien, Springer 2010, ISBN

23 Ringwall Storage Vision Quelle: M.Popp: Speicherbedarf bei einer Stromversorgung mit erneuerbaren Energien, Springer 2010, ISBN , Bild der Wissenschaft 10/2010

24 Ringwall Storage comparable to Browncoal Open Cast Mine Quelle: M.Popp: Speicherbedarf bei einer Stromversorgung mit erneuerbaren Energien, Springer 2010, ISBN

25 State of the Art Compressed Air Energy Storage Plants Quelle: [Calaminus2007]

26 State of the Art CAES plant Huntorf of E.ON AG Quelle: [Crotogino2006] 26

27 State of the Art CAES plant Huntorf of E.ON AG Source: [KBB Underground Technologies]

28 Future Developments: AA-CAES Advanced Adiabatic - Compressed Air Energy Storage Compressed air reservoir with constant volume and variable pressure (cavern) Buffering of compressor waste heat (with) without additional firing Source: [KBB Underground Technologies]

29 Future Developments: Isobaric, Adiabatic Compressed Air Energy Storage Combined Cycle for Offshore Wind-Power Storage 1 bar natural gas air M/G G M 150 m 15 bar Source: [IWBT]

30 Comparison with Pumped Storage Power Plant 1 bar 300 m G/M 30 bar Source: [IWBT]

31 Future Developments: Isobaric, Adiabatic CAES Combined Cycle for Onshore Wind-Power Storage in Caverns in Salt Domes h 1 >> h 2 saturated salt spring 1 bar air natural gas M/G M G h 1 h bar salt dome Source: [IWBT]

32 Storage Capacity for Germany only provided by ISACOASTCC Assumptions: Only wind and solar energy is used: Minimum storage capacity ca. 2,5 mean dayloads Mean electricity consumption in Germany per day: 1644 GWh Storage capacity of an ISACOAST-CC plant, based on 2 GT26-gasturbines and designed for 24 h storage operation: 38,5 GWh Power production during discharging ca MW About 107 ISACOAST-CC plants needed 107 ISACOAST-CC plants operated as usual Combined Cycle plants (back up plants) would have a power of ca MW (850 MW per plant)

33 Lay Out of an ISACOAST-CC Plant with 2 GT 26 Gasturbines Steam turbine Cooling tower HRSG

34 24 h ISACOAST-CC Plant with 2 GT 26 Gasturbines Storagevolume of caverns: 2,4 Mio. m 3 (16 x m 3 ) 8 heatstorages : 30 m Ø, 30 m hight Storage capacity total: ca. 20 GWh 2 x ALSTOM GT26 gascavern m 3 H 2 Area of brinepond: m 2 Change of brine level: 5 m Quelle: [IWBT]

35 Operation Modes and Possible Fuels Operation Modes: Charging caverne Discharging with or without (adiabatic) additional fuel Usual Combined Cycle Opperation when cavern is empty Possible Fuels: Methane, Biogas Diesel, Biodiesel Gasification gas before or after Carbon Capture H2 Hydrogen from electrolysers

36 ISACOAST-CC Solid Heat Storage (e.g.tubes in sand) Mantel Kanal gefüllt mit Speichermaterial Isolierung Ein-/Austritt Ein-/Auslassrohr Quelle: [IWBT]

37 ISACOAST-CC 6-Tank-Heat-Storage Quelle: [IWBT]

38 ISACOAST-CC 3-Tank-Thermocline-Heat-Storage Quelle: [IWBT]

39 Salt Deposits in Europe Quelle: [KBB UT]

40 Summary Much more storage capacity High capacity long distance grid Mainly wind and solar power production Versatile power plants partly combining production and storage

41 Acknowledgment For financial support (e.on international research initiative) and advices: For advices: 41

42 Literatur I KBB-UT, Kavernen-Bau-und Betriebsgesellschaft Underground Technologies, Hannover Bild der Wissenschaft 10/2010 BWK - Das Energie-Fachmagazin - Ausgabe

43 Literatur II Forschungsverbund Sonnenergie, VGB Powertech 2006 Zacharias,P.: Netzintegration der erneuerbaren Energien Steuerung der Energieflüsse, Forschungsverbund Sonnenenergie, Fachtagung 2006 S. Kohler Entwicklung der Kraftwerks-und Netzplanung in Deutschland bis 2020, DENA, Konferenz Kraftwerke und Netze für eine nachhaltige Energieversorgung. Berlin, BMU und IE 2002 Trieb, F. et.al.: Potenziale, Standortanalysen, Stromtransport, Forschungsverbund Sonnenenergie, Themen 96/97,

44 Literatur III 1. Auflage, 2010, 159 S. 24 Abb. in Farbe., Geb. ISBN: BWK - Das Energie-Fachmagazin - Ausgabe Regenerativstrom im Ringwall speichern

45 Thank you for your attention! Any questions?