Gelsenkirchen 30-10-06 page 1 Wuppertal Institute First International Renewable Energy Conference (IRES I) Energy storage technologies – a way to cope with the intermittend supply of Renewable Energies Dipl.-Ing. Vanessa Grimm October 30 and 31, 2006 Science Park Gelsenkirchen
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Gelsenkirchen 30-10-06 page 1 Wuppertal Institute
First International Renewable Energy Conference (IRES I)
Energy storage technologies –a way to cope with the intermittend supply of
Renewable Energies
Dipl.-Ing. Vanessa Grimm
October 30 and 31, 2006 Science Park Gelsenkirchen
Gelsenkirchen 30-10-06 page 2 Wuppertal Institute
Agenda
• Introduction and background
• Model for the economic best operation of balancing options
- Technologies
- Supply costs of generation/balancing options
- Results: · Operation plan for peak load sector
· Costs of peak load and balancing power
• Summary and conclusion
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Introduction and background
Electricity generation today (Germany): 11% RES [VDEW]2020: at least 20% [coalition agreement Nov. 2005]2050: 50% [long-term scenario UBA]
⇒ mitigation of the intermittend supply (PV, wind)
Thermal power plants designed for rated power,decreasing efficiency with part load. No frequent start-up
Influencing the demand side ⇒ demand side management
Uhrzeit [h] Uhrzeit [h]
Leis
tung
[kW
]
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Developement of the RES electricity generation in TWhscenario „Wahrscheinliche Entwicklung“ (DLR, WI, ZSW 2005)
• Linear optimization with technical restrictions (start-up time/costs of thermal power plants, rated power, minimum power, part load efficiency, State of charge)
• Time horizon: 2020+2030, electricity demand Germany
• sample rate: 1 hour
Marginal note:
• 1-point-model/no division into different supply areas, no import/export of electricity
• Feed-in tarif for RES (EEG) until 2020
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Remaining load curve (electricity demand – feed-in of RES)
focussing on peak load of the remainig demand→ define demand sector <600h/year
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12 MWh VRB-ESS in fall 2007 - 38 MW wind farm (Ireland)
• 1,6 MW Lead-Acid battery (Herne, Bocholt)
• 200 kW flywheel – 2 wind turbines a 600 kW
• planned: 200 MW CAES – 100 MW wind farm (Iowa)
• EU research project: adiabatic CAES
source: KBB Crotogino
source: Beacon Power
source: VRB Power Systemsr
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Summary and conclusion
Exemplary results of the model show that high amounts of RES can be integrated in the electricity system if sufficient storage/balancing options are available.
Electricity demand coincided despite intermittend supply of wind+photovoltaics.
Next steps to prove:
• Detailed investment plan for new power plants/ new stoarge systems considering capital investment costs.
• Identifying benchmarks to place new technologies on the market.
• Verifying + modifying the model for different power plant systems (type and numberof base load plants etc.).
• Considering the electricity grid + regional feed-in of RES.
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