Massachusetts · Battery

Proposed battery projects in Massachusetts

There are 24 proposed battery projects in Massachusetts's interconnection queue, totaling 5.87 GW of requested capacity. The largest is Battery Storage at 508.2 MW, and the median planned online year is 2028.

24
Proposed projects
5.87 GW
Requested capacity
244.4 MW
Average project size
2028
Median planned online year

All proposed battery projects in Massachusetts

TypeRegionIA Status
Battery Storage
1143
BatteryISO-NEMiddlesexIA Executed508.2 MW20212028
Battery Storage
1543
BatteryISO-NEBarnstableIn Progress (unknown study)500 MW20242028
Battery Storage
1567
BatteryISO-NEMiddlesexIn Progress (unknown study)500 MW20242028
Battery Storage
1460
BatteryISO-NEBristolIn Progress (unknown study)350 MW20232027
Lite Brite Battery Storage
1148
BatteryISO-NESuffolkIA Executed305.6 MW20212028
Battery Storage
1238
BatteryISO-NENorfolkFeasibility Study300 MW20222028
Battery Storage
1513
BatteryISO-NEWorcesterIn Progress (unknown study)300 MW20242028
Battery Storage
1515
BatteryISO-NEBerkshireIn Progress (unknown study)290 MW20242028
Battery Storage
1365
BatteryISO-NEHampdenFeasibility Study250 MW20232029
Hecate Energy Eastern Ave Energy Center
1115
BatteryISO-NESuffolkIA Executed250 MW20212026
Medway Grid Battery Storage
844
BatteryISO-NENorfolkIA Executed250 MW20192025
Battery Storage
1557
BatteryISO-NEEssexIn Progress (unknown study)225 MW20242028
Norman Street Battery Storage
1110
BatteryISO-NEMiddlesexIA Executed204 MW20212028
Battery Storage
1320
BatteryISO-NEWorcesterIA Executed203.9 MW20222027
Battery Storage
1555
BatteryISO-NEEssexIn Progress (unknown study)200 MW20242028
Battery Storage
1551
BatteryISO-NEWorcesterIn Progress (unknown study)180 MW20242028
Battery Storage
1542
BatteryISO-NEHampdenIn Progress (unknown study)170 MW20242029
Battery Storage
1546
BatteryISO-NEBerkshireIn Progress (unknown study)170 MW20242029
Energy Storage
877
BatteryISO-NENorfolkIA Executed170 MW20192027
Battery Storage
1412
BatteryISO-NEBristolIn Progress (unknown study)168 MW20232027
Battery Storage
1518
BatteryISO-NEBerkshireIn Progress (unknown study)136 MW20242028
Battery Storage
1553
BatteryISO-NEMiddlesexIn Progress (unknown study)125 MW20242028
Bear Swamp Unit 1 and 2 Upgrade
592
BatteryISO-NEBerkshireIA Executed66 MW20162023
West Springfield 45 MW BESS
1272
BatteryISO-NEHampdenIA Executed45 MW20222029

Browse Massachusetts's full interconnection queue. Compare with operating capacity: 17 operating storage plants in Massachusetts. Nationwide: Storage plants nationwide.

Source: "Queued Up" (Rand et al., Lawrence Berkeley National Laboratory, 2026 edition) (data as of December 31, 2025).