A flurry of grid-scale BESS project progress totalling more than a combined 1.5GWh in the past week, from Renalfa in Bulgaria, Engie in Romania, Nala Renewables in Finland and Metlen in Greece.

Chinese lithium-ion OEM Hithium and system integrator BOS Power have signed a supply agreement for 3GWh of BESS deployments in the Nordic region.

Developer Winda Energy will put a 30MW/60MWh BESS in Finland into operation next year, built with technology supplied by European companies.

Developer Merus Power has delivered and commissioned a 38MW/43MWh battery energy storage system (BESS) in Lappeenranta, Finland.

Developer Ilmatar and investor Nuveen Infrastructure have put a 30MW/41MWh BESS in northern Finland into commercial operation.

A district network heating operator in Finland has commissioned a 1MW/100MWh thermal energy storage project using novel ‘Sand Battery’ technology from Polar Night Energy.

Owner-operator Eco Stor has connected what it claimed is the largest BESS in Germany to the grid, while its former majority owner is going to build a BESS in Finland.

Ingrid Capacity and SEB have broken ground on a large-scale BESS in Finland, while Monsson has acquired a project in Sweden which it will start building in June.

Sungrow has deployed a large-scale battery system at a site in Finland less than 100km from the Arctic Circle.

Investor NTR has picked system integrator Fluence for a 55MW/110MWh BESS project in Finland, with grid forming capabilities.