Maine plans major energy storage buildout

MAINE PUBLIC • July 21, 2026

The Maine Department of Energy Resources is seeking regulators' approval for a major buildout of energy storage on the state's electric grid. The department filed a petition with the Maine Public Utilities Commission this week to start competitive bidding to develop up to 360 megawatts of large-scale batteries, which can store electricity when demand is low, then deliver it to the grid at periods of high need. A total 360 megawatt buildout could provide enough power for 15% of Maine's total electric load. Maine has a goal of adding 400 megawatts of energy storage by 2030.