Rumford Falls Hydro Facility — Plant Summary
- EIA Plant ID
- 10493
- Capacity
- 52.5 MW
- Primary Fuel
- Hydro
- Technology
- Batteries, Conventional Hydroelectric
- Status
- Operating
- Location
- Oxford, ME
- Operating Since
- 1918
- Generators
- 7
- Operator
- Brookfield Power New England
- Parent Company
- —
- Annual Generation
- 260,527 MWh
- Capacity Factor
- 56.5%
- Balancing Authority
- ISO New England Inc.
- ISO/RTO
- ISONE
- NERC Region
- NPCC
Rumford Falls Hydro Facility
OperatingBESSHydroHybrid
Ranked #4 of 48 Hydro plants in ME#290 of 1454 nationally
52.5 MW Batteries (8 MW) + Conventional Hydroelectric (45 MW) operating in Oxford, ME — ISO New England Inc.
EIAGEMWD
52.5 MW
Nameplate Capacity
7
Generators
units
Hybrid (2)
Technology
Batteries + Conventional Hydroelectric
1918
Operating Since
Location
Coordinates
44.5486, -70.6283
County
Oxford, ME
Nearby Plants
- Rumford CogenerationBlack Liquor102.6 MW · 6.8 km
- RoxWindWind15.3 MW · 7.9 km
- Rumford Power LLCNatural Gas274.5 MW · 8.7 km
Ownership & Operator
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Brookfield Power New England | Brookfield Power New England | — |
| Owner(s) | Brookfield Power New England | Brookfield Power New England | — |
| Status | Operating | operating | — |
Ownership Chain
GEM identifies the owner as Brookfield Power New England
This entity is not yet in the GEM ownership database — chain unavailable.
About
The Rumford Falls Hydro Facility is a 52.5 MW hydroelectric power plant located in Oxford County, Maine. It began operating in 1918 and is owned and operated by Brookfield Power New England. The plant utilizes conventional hydroelectric technology and is fueled by water (WAT). It consists of 7 generators and also includes a 16 MWh battery energy storage system (BESS) with a duration of 2 hours, utilizing lithium-ion (LIB) chemistry.
The facility operates within the ISO New England Inc. balancing authority and the Northeast Power Coordinating Council (NPCC) NERC region. In the most recent year with available data, the Rumford Falls Hydro Facility generated 260,527 MWh of electricity, achieving a capacity factor of 56.5%. The plant is ranked as the 6th largest out of 51 power plants in the state of Maine, and ranks 294th out of 1464 nationally. The plant is considered a hybrid facility due to its integration of both hydroelectric generation and battery storage.
Generated from EIA, GEM, and public data sources
Engineering & Generators
Grid Context
NERC Region
NPCC
Balancing Authority
ISO New England Inc.
Grid Voltage
11.5 kV
Regulatory Status
NR
Entity Type
Independent Power Producer
Sector
IPP Non-CHP
Generation
16.5K MWh
Latest Month
260.5K MWh
Annual Generation
56.5%
Capacity Factor
Jan 2022 – Dec 2024
Financial Data
No financial data available for this plant.
Pricing & Market Data
LOW confidencePoint of Interconnection
Nearest Substation
Rumford Substation · 115 kV
Substation Distance
< 10 km
Operator
Central Maine Power Company
Coord Source
OSM spatial
Market Position
ISO/RTO Market
ISO-NE
LMP Node
—
Pricing Hub
.Z.MAINE
Node Source
OSM spatial match
Substation identified. Node ID not yet resolved against ISO roster.
NPCC/ISO New England/345 Catalyst 115Substation
Rumford Falls SubstationSubstation
News & Articles (8)Beta
Hazards·winter storm
Winter Storm Warning: Northern Oxford; Northern Franklin; Southern Oxford; Southern Franklin; Northern Carroll; Southern C
Winter Storm Warning issued March 21 at 2:18PM EDT until March 23 at 2:00AM EDT by NWS Gray ME
Winter Storm Warning (hazard)
NWS Gray ME·5 days ago
Hazards·winter storm
Winter Storm Warning: Northern Oxford; Northern Franklin; Southern Oxford; Southern Franklin; Northern Carroll; Southern C
Winter Storm Warning issued March 21 at 2:18PM EDT until March 23 at 2:00AM EDT by NWS Gray ME
Winter Storm Warning (hazard)
NWS Gray ME·5 days ago
Hazards·winter storm
Winter Storm Warning: Northern Oxford; Northern Franklin; Southern Oxford; Southern Franklin; Northern Carroll; Southern C
Winter Storm Warning issued March 21 at 2:18PM EDT until March 23 at 2:00AM EDT by NWS Gray ME
Winter Storm Warning (hazard)
NWS Gray ME·5 days ago
Deals·project finance
Company presents $1B 'water battery' project to Dixfield board
The pumped storage hydropower project is slated to be located in a relatively undeveloped area in Dixfield, with a small part in Canton.
Sun Journal·7 months ago
Last updated 2026-03-21
View all 8 articles