FILE PHOTO: A lithium battery unit of the startup "sonnen", formerly known as Sonnenbatterie, is seen in Berlin, Germany, October 14, 2016. REUTERS/Axel Schmidt
FRANKFURT (Reuters) - German solar firm sonnen said on Wednesday it has successfully stored excess grid power in electric car batteries owned by its customers to help stabilise power networks operated by Dutch company TenneT, and will expand the business model.
The use of electric vehicle (EV) batteries builds on a project Shell-owned sonnen started in 2015 and provides a balancing mechanism to make sure supply and demand are matched in real time on TenneT's network in Germany.
