July 22, 2021: Technology giant Siemens on July 19 signed a letter of intent to build a 100MW/200MWh battery facility in Germany to store surplus renewable energy and balance the grid at peak demand.
The battery, in the Bavarian town of Wunsiedel, will be operated by energy company Zukunftsenergie Nordostbayern (ZENOB).
The plant, which will be installed by the Fluence joint venture that Siemens and AES have set up, will be capable of supplying 20,000 average households with electricity, the firms say.
“This benefits the upstream grid operator because it gives them more flexibility to compensate for voltage fluctuations, which are increasingly common because of the expansion of renewable energy generation,” said Bernd Koch, head of technology performance services at Siemens Smart Infrastructure.
Smart storage technology will be used to optimize the battery performance to ensure as much ‘green’ power is used as possible.
Andreas Schmuderer, Siemens’ project manager, said the battery would help to cut the costs involved in switching large industrial plants on and off in the grid area, which uses a lot of electricity.
A hydrogen generation plant with a capacity of 8.75MW has also been agreed for Wunsiedel. From 2022 it will produce up to 1,350 tonnes a year of hydrogen using renewable sources.