Engie will buy an 80% stake in privately held Green Charge for an undisclosed sum, the companies said in a statement.

Engie’s announcement follows the news earlier this week that French oil major Total intends to buy the battery-maker Saft for more than $1bn.

Green Charge is a leading player in the burgeoning US battery-storage sector. It develops, owns and operates behind-the-meter battery systems for commercial and industrial (C&I) customers in the US, with 48MWh either deployed or under construction across 150 sites.