In Fairfield County, Connecticut (CT). 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 Stevenson?

31 MW of nameplate capacity across 4 units, as of the EIA-860M release for 2026-07.

EIA-860M names FirstLight Power Resources Services 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 Stevenson LLC?

Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — FirstLight Power Resources Services 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 "Stevenson LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.

Is Stevenson still running?

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

Stevenson

Stevenson is a 31 MW hydroelectric power plant in Fairfield County, Connecticut, operated by FirstLight Power Resources Services LLC. EIA-860M lists 4 generating units here, inside ISO New England. Its units entered service between 1919 and 1936.

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: 30.5 MW; 28.9 MW net summer
Generating units: 4
In service: 1919–1936
EIA plant ID: 553

Where it is

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County: Fairfield County, Connecticut
Coordinates: 41.3833, -73.1714
Balancing authority: ISNE
Sector: IPP Non-CHP

Units, technology and status

Operator of record: FirstLight Power Resources Services LLC
Primary energy source: Hydro
Technologies: Conventional Hydroelectric
Status: Operating

Every plant FirstLight Power Resources Services LLC reports to EIA →

Stevenson: FAQ

Where is Stevenson?: In Fairfield County, Connecticut (CT). 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 Stevenson?: 31 MW of nameplate capacity across 4 units, as of the EIA-860M release for 2026-07.
Who owns Stevenson?: EIA-860M names FirstLight Power Resources Services 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 Stevenson LLC?: Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — FirstLight Power Resources Services 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 "Stevenson LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
Is Stevenson still running?: EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.