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Daimler opens largest second-hand EV battery storage facilty

World's largest 'second-use' battery storage unit set to connect to the German grid

Carmaker Daimler has completed construction of the world’s largest energy storage facility using second-hand car batteries in Lünen, Westphalia, in Germany.

The new site, which utilises batteries from Daimler’s second-generation smart fortwo electric cars, will provide 13MWh of capacity to the German energy market by the end of the year. Daimler said the first power units are already plugged into the German energy grid.

Daimler said in a statement energy output from the facility will be made available to the “winner of weekly auctions among the network operators for primary controlling power range”.

The project, a joint venture between German firms Daimler, The Mobility House, GETEC and Remondis, will see 1,000 used EV battery systems grouped into a single storage solution.

Each partner takes a distinct role in the new operation, with Daimler covering the initial manufacture and configuration of the battery systems, The Mobility House and GETEC handling their installation and marketing to the energy markets, and Remondis taking charge of their recycling at end-of-life.

Meanwhile, German manufacturer Bosch said in a blog post it has worked with car giant BMW and energy company Vattenfall on a parallel storage project using “second-life” EV batteries. Its project, located in Hamburg, incorporates 2,600 battery modules from 100 electric cars, and provides 2MW of output and 2.8MWh of capacity.

“This energy is available within seconds to stabilize the power grid,” it said in the post.

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