Altamont
Altamont is a 7 MW oil-fired power plant in Effingham County, Illinois, operated by City of Altamont - (IL). EIA-860M lists 4 generating units here, inside MISO. Its units entered service between 2002 and 2006.
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
- 7.2 MW
- 7.2 MW net summer
- Generating units
- 4
- In service
- 2002–2006
- EIA plant ID
- 7990
Where it is
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- County
- Effingham County, Illinois
- Coordinates
- 39.0687, -88.7555
- Balancing authority
- MISO
- Sector
- Electric Utility
Units, technology and status
- Operator of record
- City of Altamont - (IL)
- Primary energy source
- Petroleum
- Technologies
- Petroleum Liquids
- Status
- Standby/Backup
Altamont: FAQ
- Where is Altamont?
- In Effingham 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 Altamont?
- 7 MW of nameplate capacity across 4 units, as of the EIA-860M release for 2026-07.
- Who owns Altamont?
- EIA-860M names City of Altamont - (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 Altamont LLC?
- Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — City of Altamont - (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 "Altamont LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
- Is Altamont still running?
- EIA-860M files it as "Standby/Backup" for 2026-07. Statuses change monthly, and this page follows the monthly release.