Rainbow (CT)
Rainbow (CT) is a 8 MW hydroelectric power plant in Hartford County, Connecticut, operated by Farmington River Power Company. EIA-860M lists 2 generating units here, inside ISO New England. Its units entered service in 1925.
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
- 8 MW
- 8 MW net summer
- Generating units
- 2
- In service
- 1925
- EIA plant ID
- 559
Where it is
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- County
- Hartford County, Connecticut
- Coordinates
- 41.9153, -72.6936
- Balancing authority
- ISNE
- Sector
- Electric Utility
Units, technology and status
- Operator of record
- Farmington River Power Company
- Primary energy source
- Hydro
- Technologies
- Conventional Hydroelectric
- Status
- Operating
Rainbow (CT): FAQ
- Where is Rainbow (CT)?
- In Hartford 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 Rainbow (CT)?
- 8 MW of nameplate capacity across 2 units, as of the EIA-860M release for 2026-07.
- Who owns Rainbow (CT)?
- EIA-860M names Farmington River Power Company 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 Rainbow (CT) LLC?
- Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Farmington River Power Company 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 "Rainbow (CT) LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
- Is Rainbow (CT) still running?
- EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.