Battery Storage — Project Summary

Queue ID
ISO-NE-1238
Capacity
301.26001 MW
Technology
Battery
Status
active
Location
Norfolk, MA
Region
ISO-NE
Developer
—
IA Status
System Impact Study

Battery Storage

BetaActiveBatteryISO-NELBNL + Live

301.26 MW storage in Norfolk, MA · In queue since March 2022 · Proposed COD November 2026

301.26 MW

Capacity

1

Components

Battery

4 years

In Queue

System Impact Study

IA Status

COD target: 2026

Interconnection Timeline

Total Duration

4y 8m

Impact Study25%
Queue EntryMar 22, 2022

Interconnection request submitted to ISO/RTO

TCS StudyCurrent

ISO-NE is transitioning to cluster studies per FERC Order 2023.

Typical: 25–30 months (recent)

Interconnection Agreement

Interconnection agreement not yet executed

Typical: 30–60 days (negotiation)

Commercial Operation

Proposed COD: 2026-11-23

Project Details

State

MA

County

Norfolk

Region

ISO-NE

Developer

—

Utility

—

Entity

ISO-NE

Point of Interconnection

Primary: West Medway 345kV station

Data Source

LBNL + Live

News & Articles (2)Beta
General

Battery storage moves forward in Massachusetts as barriers fall

Development and construction of battery energy storage systems (BESS) in Massachusetts has become more feasible as a result of expanded...

Solar Power World·2 days ago
General

Flatiron Energy Closes on $540M for Battery Energy Storage Project Largest in Massachusetts

Flatiron Energy has reached financial close on $540 million to support the Taft Project, a 200 MW battery energy storage facility to be...

Orrick·4 months ago

Last updated 2026-03-26