How big is Rumford Falls Hydro Facility?

Rumford Falls Hydro Facility has a reported capacity of 48.2 MW. Source: EIA Form 860M.

What kind of plant is Rumford Falls Hydro Facility?

Rumford Falls Hydro Facility is a Batteries, Conventional Hydroelectric facility in Oxford County, ME, participating in the ISO-NE market.

Where is Rumford Falls Hydro Facility located?

Rumford Falls Hydro Facility is in Oxford County, ME, inside the ISO-NE balancing area.

Who operates Rumford Falls Hydro Facility?

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.

How much electricity does Rumford Falls Hydro Facility generate?

Rumford Falls Hydro Facility reported 260.5 GWh over the twelve months to 2024-12. Figures are net generation as filed to EIA-923.

How does Rumford Falls Hydro Facility compare to other plants?

By capacity, Rumford Falls Hydro Facility ranks #281 of 1,349 operating plants of the same technology nationally. It ranks #4 of 49 in ME.

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Rumford Falls Hydro Facility

Rumford Falls Hydro LLC - Oxford County - ISONE

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.

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ISO-NE · Asset profile

Ask about Rumford Falls Hydro Facility

Answers use this researched asset profile with live ISO-NE data. Ask about ownership, equipment, project history, or current grid context.

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Rumford Falls Hydro Facility — 48 MW hydro plant, ME · Ask the Grid

Overview

Nameplate capacity: 48.2 MW
Canonical EIA plant baseline.
Registry anchor: Plant 10493
plant-10493

Structured profile

Technology: Batteries, Conventional Hydroelectric
Operator: Brookfield Power New England

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Units and generators

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 2018	Operating
GEN2	8.1 MW 8.1 MW summer	Conventional Hydroelectric Water · HY	Jan 2018	Operating
GEN3	8.8 MW 8.8 MW summer

Performance

Monthly EIA generation history and recent market-resource behavior where linked telemetry is available.

Peer context

Technology capacity: 44.5 MW
National rank: #281
ME rank: #4

Monthly generation

Download CSV

Latest 12 months

260.5 GWh

Reported net generation

Latest report

Dec 2024

EIA-923 monthly filing

2024 capacity factor

61.5%

Using current reported nameplate capacity

Grid and market context

Deterministic links to ERCOT market resources, price records, outage disclosures, queue records, and nearby infrastructure. Candidate joins remain labeled until corroborated.

Nearby substations

HIFLD infrastructure inventory

UNKNOWN133112

IN SERVICE · 115 kV

6.8 km

UNKNOWN133729

Commercial, land, and environmental record

Source-backed project transactions, agreements, land records, permits, and environmental disclosures. Portfolio and adjacent-project facts remain explicitly scoped.

Transactions and agreements

Regulatory Approval

Oct 18, 1994

FERC issued a new 30-year license for Project No. 2333. That license was scheduled to expire on September 30, 2024.

Federal Energy Regulatory Commission · Rumford Falls Hydro Project

rumford.brookfieldusprojects.com

Asset Modification

2008

Lower Station Units 1 and 2 received runner replacements.

Rumford Falls Hydro LLC · Lower Station Development

lowimpacthydro.org

Asset Modification

2009

Upper Station Unit 3 received a generator rewind and runner replacement.

Rumford Falls Hydro LLC · Upper Station Development

lowimpacthydro.org

Asset Modification

2011

The Upper Dam's Obermeyer rubber dam replaced wooden flashboards.

Rumford Falls Hydro LLC · Upper Station Development

lowimpacthydro.org

Regulatory Approval

Jun 3, 2021

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.

Federal Energy Regulatory Commission · Rumford Falls Hydro LLC

maine.gov

Related parties and identifiers

Parties, market resources, and identifiers tied to this asset, with owner, operator, developer, EPC, compliance provider, and interconnecting entity roles kept separate.

Relationship graph

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AssetProject companyOwner / operatorContractor

Timeline and sources

Project milestones and public references behind the asset profile.

Project timeline

Jan 1950
Jan 1950
Generator enters operationEIA-860
EIA-860 lists generator GEN4 with this operating date.
Oct 1954
Oct 1954
Generators enter operation

Rumford Falls Hydro Facility

Ask about Rumford Falls Hydro Facility

Rumford Falls Hydro Facility

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Overview

Structured profile

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Wyman Hydro

Anson Abenaki Hydros

Units and generators

Performance

Peer context

Monthly generation

Grid and market context

Nearby substations

Commercial, land, and environmental record

Transactions and agreements

Related parties and identifiers

Relationship graph

Timeline and sources

Project timeline

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Parties and identifiers

Reporting portfolio

Sources

Common questions about Rumford Falls Hydro Facility

How big is Rumford Falls Hydro Facility?

What kind of plant is Rumford Falls Hydro Facility?

Where is Rumford Falls Hydro Facility located?

Who operates Rumford Falls Hydro Facility?

How much electricity does Rumford Falls Hydro Facility generate?

How does Rumford Falls Hydro Facility compare to other plants?

Co-located assets