The technology will help the formation of prosumer communities and allow the integration of more renewable energy sources into the grid, Litgrid, Lithuania's power transmission system operator, said in a press release on Wednesday.
The project was coordinated by the Lithuanian Energy Institute.
Virginijus Radziukynas, the head of the institute's Laboratory of Systems Control and Automation, says the battery can help the operator to stabilize grid fluctuations by using energy from renewable sources.
"This is probably the first non-laboratory use of this technology in the world," Radziukynas said. "The battery technology (...) we developed has been successfully connected to the network of Wageningen University's testing center ACRRES in the Netherlands," he added.
The project involved research institutions and companies from Germany, the Netherlands, Spain, Italy, Israel and Lithuania, and the USEF.
The Energy Keeper project lasted three years and received a subsidy of almost 4 million euros from the European Commission's Horizon 2020 program.
