June 5, 2018 Read More →

Sweden’s Vattenfall sees benefits in co-locating wind, storage

Greentech Media:

Swedish energy giant Vattenfall has found a way to further cut the cost of grid-scale energy storage: share the infrastructure with a wind farm.

The company has announced the commissioning of what it said was “the largest co-located battery installed in the United Kingdom”— a 22-megawatt plant, which shares electrical plans with the Pen y CyMoedd wind farm in Wales.

The 76-turbine wind farm, which is Vattenfall’s largest onshore project and also the biggest in England and Wales, delivers up to 228 megawatts of power direct to the U.K. grid. The £400 million ($532 million) project was officially opened in September 2017. The battery system, meanwhile, shares electrical infrastructure with the wind farm but earns its keep by delivering ancillary services, and specifically enhanced frequency response, to electricity network operator National Grid.

The battery system is made up of six shipping-container-sized units, five of which house 500 i3 BMW-manufactured battery packs. Each of the new BMW lithium-ion batteries has a capacity of 33 kilowatt-hours and is adapted for stationary storage applications, Vattenfall said. In March last year, Vattenfall inked a deal with BMW Group for a supply of batteries originally destined for the i3 electric vehicle series. The energy company committed to buy 1,000 of the lithium-ion batteries.

The first project to benefit from the deal was the 122-megawatt Princess Alexia onshore wind farm near Amsterdam in the Netherlands. Vattenfall added 3.2 megawatts of energy storage capacity to the site, making it the company’s first large battery project in the country. Vattenfall is also planning to co-locate a battery plant next to a Nordex wind farm in Hamburg-Bergedorf as part of a project called “Norddeutsche Energiewende NEW 4.0” with the Hamburg University of Applied Sciences.

More: Vattenfall’s Formula for Low-Cost Energy Storage Deployment

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