Where is S D Warren Westbrook?

In Cumberland County, Maine (ME). The map on this page is placed at the coordinates EIA files for the plant, which locate the site rather than any individual unit.

How big is S D Warren Westbrook?

70 MW of nameplate capacity across 16 units, as of the EIA-860M release for 2026-07.

Who owns S D Warren Westbrook?

EIA-860M names Relevate Power Management LLC as the reporting entity. That is the operator of record on the survey, which is not always the ultimate owner.

Is this the same as S D Warren Westbrook LLC?

Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Relevate Power Management LLC here — not the project company that holds the asset. Project companies are commonly registered as an LLC carrying the plant's name, so a search for "S D Warren Westbrook LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.

Is S D Warren Westbrook still running?

EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.

S D Warren Westbrook

S D Warren Westbrook is a 70 MW biomass power plant in Cumberland County, Maine, operated by Relevate Power Management LLC. EIA-860M lists 16 generating units here, inside ISO New England. Its units entered service between 1903 and 1985.

As of 2026-07 (inventory dated 2026-07-31) · EIA-860M Preliminary Monthly Electric Generator Inventory · eia.gov/…/july_generator2026.xlsx · eia.gov/…/eia860m

Nameplate capacity: 69.7 MW; 63.5 MW net summer
Generating units: 16
In service: 1903–1985
EIA plant ID: 50447

Where it is

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County: Cumberland County, Maine
Coordinates: 43.6849, -70.3531
Balancing authority: ISNE
Sector: IPP CHP

Units, technology and status

Operator of record: Relevate Power Management LLC
Primary energy source: Biomass
Technologies: Conventional Hydroelectric, Wood/Wood Waste Biomass
Status: Operating (14) · Out of service and NOT expected to return to service in next calendar year (2)

This site runs on more than one energy source. EIA-860M capacity splits: Biomass 63 MW, Hydro 7 MW. It is filed here under Biomass, the source with the most capacity.

Every plant Relevate Power Management LLC reports to EIA →

S D Warren Westbrook: FAQ

Where is S D Warren Westbrook?: In Cumberland County, Maine (ME). The map on this page is placed at the coordinates EIA files for the plant, which locate the site rather than any individual unit.
How big is S D Warren Westbrook?: 70 MW of nameplate capacity across 16 units, as of the EIA-860M release for 2026-07.
Who owns S D Warren Westbrook?: EIA-860M names Relevate Power Management LLC as the reporting entity. That is the operator of record on the survey, which is not always the ultimate owner.
Is this the same as S D Warren Westbrook LLC?: Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Relevate Power Management LLC here — not the project company that holds the asset. Project companies are commonly registered as an LLC carrying the plant's name, so a search for "S D Warren Westbrook LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
Is S D Warren Westbrook still running?: EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.