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Germany

Germany

Enercon to develop 10MW battery storage system

GERMANY: Enercon is developing what it claims will be Germany's largest battery-based energy storage system with grid developer Energiequelle.

The system is based on lithium-ion batteries
The system is based on lithium-ion batteries

The 10MW Regionale Regelkraftwerk Feldheim project is being built at the wholly renewable-energy-powered village of Feldheim in Brandenburg. The first unit will go online this year, with the second due in 2015, when the full 10MW capacity will be reached.

Enercon will provide electronics including the activation system for the converters used for charging and discharging. These comprise 42 power cabinets with a capacity of 300kW each.

The actual storage element will be made up of 196 battery boxes containing lithium-ion batteries housed in a 30-metre by 17-metre building.

It will function as a regulating power station at regional level and is intended to be used to stabilise frequency fluctuations in the 50Hz transmission network. The storage system can also provide the village with electricity when power generation from renewable sources dips.

Project manager Niklas Netzel said: "Our battery balances such variations in a highly dynamic manner, thus acting as a regulating power station. This response within seconds, faster than any other power station, is of interest to operators of power transmission grids, who are prepared to pay for the power output of the energy battery."

The companies claim that it is possible to generate about EUR 2,500 per week in revenue. "That makes energy storage technology a commercially viable proposition," said Netzel.

Enercon indicated that it has ambitions beyond this individual project, saying that it is participating in order to "gain experience in storage technology based on lithium-ion batteries".

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