Medway Grid Battery Storage (844)
Medway Grid Battery Storage is a 250.0 MW battery interconnection project in Norfolk, Massachusetts with a current status of operational. It is proposed to connect at Eversource 345 kV West Medway substation.
250.0 MWCapacity
OperationalStatus
SEMAMarket
BatteryTechnology
Project facts
| Canonical name | Medway Grid Battery Storage |
|---|---|
| Queue ID | 844 |
| Status | operational |
| Source status | C |
| Market | SEMA |
| Technology | Battery |
| Capacity | 250.0 MW |
| State | Massachusetts |
| County | Norfolk |
| Point of interconnection | Eversource 345 kV West Medway substation |
| Requested (queue) date | 2019-03-13 |
| Proposed in-service date | — |
| Operational date | 2026-02-25 |
| Withdrawn date | — |
| Developer | — |
| Utility / transmission owner | ISO-NE |
Cross-source records
This project is also observed in: Lawrence Berkeley National Laboratory — Queued Up interconnection dataset. interXdata links these source records without double-counting the project.
What changed
| Observed | Field | Old value | New value | Materiality |
|---|---|---|---|---|
| 2026-08-04 | new_project | — | operational | high |
Explore related data
Source last checked2026-08-04
Data last materially changed2026-08-04
Page data generated2026-08-28
Provenance: isone-irtt. Values are normalized from public source records into the interXdata canonical warehouse; see each source for original filings.
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