South Portland ESS, LLC (64616_1)
South Portland ESS, LLC is a 10.0 MW battery interconnection project in Cumberland, Maine with a current status of active.
10.0 MWCapacity
ActiveStatus
ISNEMarket
BatteryTechnology
Project facts
| Canonical name | South Portland ESS, LLC |
|---|---|
| Queue ID | 64616_1 |
| Status | active |
| Source status | (T) Regulatory approvals received. Not under construction |
| Market | ISNE |
| Technology | Battery |
| Capacity | 10.0 MW |
| State | Maine |
| County | Cumberland |
| Point of interconnection | — |
| Requested (queue) date | — |
| Proposed in-service date | 2027-12-01 |
| Operational date | — |
| Withdrawn date | — |
| Developer | — |
| Utility / transmission owner | South Portland ESS, LLC |
What changed
| Observed | Field | Old value | New value | Materiality |
|---|---|---|---|---|
| 2026-08-02 | new_project | — | active | high |
Explore related data
Source last checked2026-08-03
Data last materially changed2026-08-03
Page data generated2026-08-27
Provenance: U.S. EIA — Form EIA-860M generator inventory (operating + planned). Values are normalized from public source records into the interXdata canonical warehouse; see each source for original filings.
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