Explore the largest battery storage projects expected to come online in Massachusetts and see all proposed battery storage projects on a map.
Last updated: May 2026
On this page, you can explore our database of planned battery storage projects in Massachusetts. Each month, we track projects in development and update our list of the largest battery storage projects expected to come online in Massachusetts.
As of May 2026, there are 44 battery storage projects in development in Massachusetts, according to Cleanview's project tracker. Their total planned capacity is 7,950 MW. See also: operating battery storage projects in Massachusetts→
Planned Projects
44
Planned Capacity
7,950 MW
Unique Developers
14
Map of planned battery storage projects in Massachusetts. Marker size reflects planned capacity.
508 MW
Expected Online: May 2028
Location: Middlesex, Massachusetts
Developer: Jupiter Power
500 MW
Expected Online: December 2028
Location: Barnstable, Massachusetts
500 MW
Expected Online: December 2028
Location: Barnstable, Massachusetts
500 MW
Expected Online: April 2028
Location: Middlesex, Massachusetts
500 MW
Expected Online: April 2028
Location: Middlesex, Massachusetts
350 MW
Expected Online: September 2027
Location: Bristol, Massachusetts
300 MW
Expected Online: May 2028
Location: Suffolk, Massachusetts
Developer: Flatiron Energy
300 MW
Expected Online: November 2027
Location: Norfolk, Massachusetts
Developer: Hecate Energy
300 MW
Expected Online: April 2028
Location: Norfolk, Massachusetts
5 MW
Expected Online: June 2026
Location: Hampden, Massachusetts
5 MW
Expected Online: June 2026
Location: Essex, Massachusetts
6 MW
Expected Online: July 2026
Location: Norfolk, Massachusetts
Developer: Solect Energy
5 MW
Expected Online: December 2026
Location: Plymouth, Massachusetts
Developer: Rewild Renewables
5 MW
Expected Online: December 2026
Location: Plymouth, Massachusetts
Developer: Rewild Renewables
4 MW
Expected Online: December 2026
Location: Plymouth, Massachusetts
Developer: Rewild Renewables
3 MW
Expected Online: December 2026
Location: Plymouth, Massachusetts
Developer: Rewild Renewables
2 MW
Expected Online: December 2026
Location: Bristol, Massachusetts
Developer: Unable to find
1 MW
Expected Online: December 2026
Location: Plymouth, Massachusetts
Developer: Rewild Renewables