Battery Storage Addition (1394)
Battery Storage Addition is a 284.1 MW battery interconnection project in Middlesex, Connecticut with a current status of withdrawn. It is proposed to connect at POI between 10F-2T-2 and 10F-1T-1 breakers on the 345 kV bus; Northeast Utilities 11631 Substation - Middletown..
284.1 MWCapacity
WithdrawnStatus
CTMarket
BatteryTechnology
Project facts
| Canonical name | Battery Storage Addition |
|---|---|
| Queue ID | 1394 |
| Status | withdrawn |
| Source status | W |
| Market | CT |
| Technology | Battery |
| Capacity | 284.1 MW |
| State | Connecticut |
| County | Middlesex |
| Point of interconnection | POI between 10F-2T-2 and 10F-1T-1 breakers on the 345 kV bus; Northeast Utilities 11631 Substation - Middletown. |
| Requested (queue) date | 2023-05-04 |
| Proposed in-service date | 2026-07-01 |
| Operational date | — |
| Withdrawn date | 2025-10-10 |
| 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| 2026-08-04 | new_project | — | withdrawn | high |
Explore related data
Source last checked2026-08-04
Data last materially changed2026-08-04
Page data generated2026-08-27
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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