Stillwater B
Stillwater B is a 2 MW hydroelectric power plant in Penobscot County, Maine, operated by Brookfield Black Bear Hydro, LLC. EIA-860M lists 3 generating units here, inside ISO New England. Its units entered service in 2013.
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
- 2.4 MW
- 2.4 MW net summer
- Generating units
- 3
- In service
- 2013
- EIA plant ID
- 59437
Where it is
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- County
- Penobscot County, Maine
- Coordinates
- 44.9127, -68.6838
- Balancing authority
- ISNE
- Sector
- IPP Non-CHP
Units, technology and status
- Operator of record
- Brookfield Black Bear Hydro, LLC
- Primary energy source
- Hydro
- Technologies
- Conventional Hydroelectric
- Status
- Operating
Every plant Brookfield Black Bear Hydro, LLC reports to EIA →
Stillwater B: FAQ
- Where is Stillwater B?
- In Penobscot 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 Stillwater B?
- 2 MW of nameplate capacity across 3 units, as of the EIA-860M release for 2026-07.
- Who owns Stillwater B?
- EIA-860M names Brookfield Black Bear Hydro, 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 Stillwater B LLC?
- Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Brookfield Black Bear Hydro, 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 "Stillwater B LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
- Is Stillwater B still running?
- EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.