Ameresco Janesville
Ameresco Janesville is a 3 MW biomass power plant in Rock County, Wisconsin, operated by AMERESCO Janesville LLC. EIA-860M lists 3 generating units here, inside MISO. Its units entered service in 2004.
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
- 3 MW
- 3 MW net summer
- Generating units
- 3
- In service
- 2004
- EIA plant ID
- 56427
Where it is
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- County
- Rock County, Wisconsin
- Coordinates
- 42.7083, -89.0208
- Balancing authority
- MISO
- Sector
- IPP Non-CHP
Units, technology and status
- Operator of record
- AMERESCO Janesville LLC
- Primary energy source
- Biomass
- Technologies
- Landfill Gas
- Status
- Out of service and NOT expected to return to service in next calendar year
Ameresco Janesville: FAQ
- Where is Ameresco Janesville?
- In Rock County, Wisconsin (WI). 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 Ameresco Janesville?
- 3 MW of nameplate capacity across 3 units, as of the EIA-860M release for 2026-07.
- Who owns Ameresco Janesville?
- EIA-860M names AMERESCO Janesville 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 Ameresco Janesville LLC?
- Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — AMERESCO Janesville 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 "Ameresco Janesville LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
- Is Ameresco Janesville still running?
- EIA-860M files it as "Out of service and NOT expected to return to service in next calendar year" for 2026-07. Statuses change monthly, and this page follows the monthly release.