Rumford Falls Hydro Facility
Rumford Falls Hydro LLCOxford County
The Rumford Falls Hydro Facility is located on the Androscoggin River at river mile 80 in Rumford, Oxford County, Maine. It comprises two discrete hydroelectric developments: the Upper Station Development (29.3 MW nameplate capacity) and the Lower Station Development (15.2 MW nameplate capacity), operated by Rumford Falls Hydro LLC under FERC Project No. 2333. The facility operates in run-of-river mode with six conventional hydroelectric generating units and an 8 MW / 16 MWh battery-storage system added under a FERC non-capacity amendment.
Mapped infrastructure geometry associated with this asset.
EIA plant 10493 · Inventory for Aug 2026.
| Generator | Technology | Status | Power (MW) | Energy (MWh) |
|---|---|---|---|---|
| BES1 | Batteries | Operating | 8 | 16 |
| GEN1 | Conventional Hydroelectric | Operating | 8.1 | Unknown |
| GEN2 | Conventional Hydroelectric | Operating | 8.1 | Unknown |
Similar plants ranked by technology, capacity, and distance.
Operating generator records and technology attributes reported through EIA-860.
| Generator | Capacity | Technology | Operation | Status |
|---|---|---|---|---|
| BES1 | 8 MW 8 MW summer | Batteries Electricity used for energy storage · BA | May 2023 | Operating |
| GEN1 | 8.1 MW 8.1 MW summer | Conventional Hydroelectric Water · HY | Jan 1918 | Operating |
| GEN2 | 8.1 MW 8.1 MW summer | Conventional Hydroelectric Water · HY | Jan 1918 | Operating |
| GEN3 | 8.8 MW 8.8 MW summer | Conventional Hydroelectric Water · HY | Jan 1926 | Operating |
| GEN4 | 4.3 MW | |||
Monthly EIA generation history and recent market-resource behavior where linked telemetry is available.
Deterministic links to ERCOT market resources, price records, outage disclosures, queue records, and nearby infrastructure. Candidate joins remain labeled until corroborated.
Source-backed project transactions, agreements, land records, permits, and environmental disclosures. Portfolio and adjacent-project facts remain explicitly scoped.
Parties, market resources, and identifiers tied to this asset, with owner, operator, developer, EPC, compliance provider, and interconnecting entity roles kept separate.
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Project milestones and public references behind the asset profile.
EIA-860 lists generator GEN1, generator GEN2 with this operating date.
| GEN3 | Conventional Hydroelectric | Operating | 8.8 | Unknown |
|---|
| GEN4 | Conventional Hydroelectric | Standby | 4.3 | Unknown |
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| GEN5 | Conventional Hydroelectric | Operating | 7.6 | Unknown |
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| GEN6 | Conventional Hydroelectric | Operating | 7.6 | Unknown |
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Monthly generation is reported through EIA-923. Capacity factor uses the current EIA nameplate capacity and is shown only for complete calendar years.
Portfolio membership follows the latest EIA-860 reporting entity. It does not imply ultimate ownership.
EIA-860 lists generator GEN3 with this operating date.
EIA-860 lists generator GEN4 with this operating date.
EIA-860 lists generator GEN5, generator GEN6 with this operating date.
FERC issued a new 30-year license for Project No. 2333. That license was scheduled to expire on September 30, 2024.
Lower Station Units 1 and 2 received runner replacements.
Upper Station Unit 3 received a generator rewind and runner replacement.
The Upper Dam's Obermeyer rubber dam replaced wooden flashboards.
FERC issued a non-capacity order amendment (175 FERC ¶ 62,137) authorizing an 8 MW, 16 MWh battery-storage system. The amendment did not change the project's generating capacity, hydraulic capacity, operations, or grid connection points.
Rumford Falls Hydro LLC filed an application for a new FERC license for continued operation of Project No. 2333.
EIA-860 lists generator BES1 with this operating date.
FERC issued its Final Environmental Assessment for the project. The Maine Department of Environmental Protection also issued an Order approving water quality certification for the project.
After the prior license expired, FERC authorized continued operation under the existing license's terms and conditions until issuance of a new license.
Answered from the published record above. Questions whose inputs this profile does not carry are omitted rather than estimated.
Rumford Falls Hydro Facility reports 8 MW battery storage + 40.2 MW hydroelectric of operating nameplate capacity. These technology ratings do not establish a common export limit. Source: EIA Aug 2026.
Rumford Falls Hydro Facility is a Batteries, Conventional Hydroelectric facility in Oxford County, ME, participating in the ISO-NE market.
Rumford Falls Hydro Facility is in Oxford County, ME, inside the ISO-NE balancing area.
Rumford Falls Hydro Facility is operated by Brookfield Power New England according to the EIA generator inventory. Reporting membership does not by itself establish ultimate ownership.
Rumford Falls Hydro Facility reported 260.5 GWh over the twelve months to 2024-12. Figures are net generation as filed to EIA-923.
By capacity, Rumford Falls Hydro Facility ranks #281 of 1,356 operating plants of the same technology nationally. It ranks #4 of 49 in ME.
Plants within 25 km, nearest first, regardless of technology. Proximity is straight-line distance between mapped plant coordinates; it does not by itself establish a shared point of interconnection.