Stem Steps Into Grid-Scale Storage With Partnership in Massachusetts

Stem is jumping from behind-the-meter energy storage into the grid-connected battery realm. The decade-old startup, known for using batteries to help commercial customers manage demand charges, just stepped to the front of the meter market. Stem will build 28.2 megawatts/28.2 megawatt-hours of solar-paired energy storage across five sites in Massachusetts, working with private equity firm Syncarpha Capital, which develops, owns and operates solar plants.