West Springfield 45 MW BESS
45 MW storage in Hampden, MA · In queue since June 2022 · Proposed COD May 2026
45 MW
Capacity
1
Components
Battery
3y 11m
In Queue
IA Executed
IA Status
COD target: 2026
Total Duration
3y 11m
Interconnection request submitted to ISO/RTO
ISO-NE is transitioning to cluster studies per FERC Order 2023.
Typical: 25–30 months (recent)
Interconnection agreement executed — binding commitment to build
Typical: 30–60 days (negotiation)
Project under construction
Typical: 6–18 months
Proposed COD: 2026-05-08
The West Springfield 45 MW BESS is a proposed energy storage project located in Hampden County, Massachusetts. The project, with a total capacity of 45 MW, consists entirely of battery storage. It is listed in the ISO-NE interconnection queue as queue ID ISO-NE-1272, with an entry date of June 8, 2022, and a proposed commercial operation date of May 8, 2026.
The project's interconnection agreement (IA) has been executed. The point of interconnection (POI) is the West Springfield Station, 115kV Bus, utilizing the existing 8C-3X 140 MVA transformer at position WS#2. The project has appeared in recent news coverage.
Generated from interconnection queue and public data sources
State
MA
County
Hampden
Grid Region
ISO New England
Market
ISO/RTO Member
Developer
—
Utility
ISO-NE
Entity
ISO-NE
Service Type
—
Point of Interconnection
West Springfield Station, 115kV Bus (existing 8C-3X 140 MVA transformer; position WS#2).
Data Source
LBNL + Live
- ISO / RTO
- ISO-NE
- Trading Hub
- .H.INTERNAL_HUB
- Hub Confidence
- MEDIUM
This project's market context is estimated from its Point of Interconnection. Hub and node assignments are approximate and based on geographic inference from the POI substation name.
