Energy Storage Goal

Maine has established state goals to deploy 300 MW of energy storage capacity by end of 2025 and 400 MW by end of 2030, with storage systems helping homes manage electricity costs, provide backup power during outages, and integrate renewable energy. Efficiency Maine Trust is incorporating energy storage into its efficiency programs and pilot projects—check their website for available residential offerings and incentives as programs develop.

Energy storage is eligible to participate in Maine's renewable energy procurements, and the state is actively supporting deployment through Efficiency Maine Trust's programs and innovation pilots. The December 2024 procurement recommendation calls for up to 200 MW of cost-effective storage, creating substantial market opportunity; contractors should engage with the Public Utilities Commission and Efficiency Maine Trust for program details and interconnection requirements.

Maine's energy storage goals (300 MW by 2025, 400 MW by 2030, amended by L.D. 1850 to specify "at least" these amounts) are enforced through multiple mechanisms: Efficiency Maine Trust program integration, participation in renewable energy procurements, and a critical-facilities pilot serving hospitals and emergency services. The Governor's Energy Office (now Maine Department of Energy Resources) can reevaluate and increase targets biennially starting in 2024; as of February 2026, Maine had approximately 240 MW operating with hundreds of MW in the ISO-NE queue.