McLeansboro
McLeansboro is a 6 MW oil-fired power plant in Hamilton County, Illinois, operated by City of McLeansboro - (IL). EIA-860M lists 4 generating units here, inside MISO. Its units entered service between 1950 and 1995.
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
- 6.1 MW
- 5.4 MW net summer
- Generating units
- 4
- In service
- 1950–1995
- EIA plant ID
- 948
Where it is
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- County
- Hamilton County, Illinois
- Coordinates
- 38.0947, -88.5413
- Balancing authority
- MISO
- Sector
- Electric Utility
Units, technology and status
- Operator of record
- City of McLeansboro - (IL)
- Primary energy source
- Petroleum
- Technologies
- Petroleum Liquids
- Status
- Standby/Backup (3) · Out of service and NOT expected to return to service in next calendar year (1)
McLeansboro: FAQ
- Where is McLeansboro?
- In Hamilton County, Illinois (IL). 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 McLeansboro?
- 6 MW of nameplate capacity across 4 units, as of the EIA-860M release for 2026-07.
- Who owns McLeansboro?
- EIA-860M names City of McLeansboro - (IL) 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 McLeansboro LLC?
- Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — City of McLeansboro - (IL) 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 "McLeansboro LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
- Is McLeansboro still running?
- EIA-860M files it as "Standby/Backup" for 2026-07. Statuses change monthly, and this page follows the monthly release.