Swedish utility Vattenfall said its 22MW battery at the 230MW Pen y Cymoedd wind farm in south Wales started commercial operations this week.
The company will use the battery to provide balancing services to National Grid, having won a four year enhanced frequency response (EFR) contract from the system operator in 2016.
The Pen y Cymoedd battery is made up of BMW battery packs, using thousands of the 33kWh batteries that power its i3 vehicle, though the batteries have been adapted for stationary applications, said Vattenfall.
“Hybrid renewable parks will play a larger role in the future,” said Claus Wattendrup, head of business unit Solar & Batteries at Vattenfall.
Construction project manager, Nick Entwistle, said: “Installing a battery of this scale, co-located with a wind farm, has been a fascinating electrical engineering challenge.” He thanked Belectric, EDS, Quad Consult and Electric Power Solutions for their “expert back-up”.
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