In Poweshiek County, Iowa (IA). 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 Montezuma?

10 MW of nameplate capacity across 8 units, as of the EIA-860M release for 2026-07.

EIA-860M names City of Montezuma - (IA) 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 Montezuma LLC?

Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — City of Montezuma - (IA) 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 "Montezuma LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.

Is Montezuma still running?

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

Montezuma

Montezuma is a 10 MW oil-fired power plant in Poweshiek County, Iowa, operated by City of Montezuma - (IA). EIA-860M lists 8 generating units here, inside MISO. Its units entered service between 1940 and 2003.

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: 9.8 MW; 9.6 MW net summer
Generating units: 8
In service: 1940–2003
EIA plant ID: 1165

Where it is

Loading map…

County: Poweshiek County, Iowa
Coordinates: 41.586, -92.5228
Balancing authority: MISO
Sector: Electric Utility

Units, technology and status

Operator of record: City of Montezuma - (IA)
Primary energy source: Petroleum
Technologies: Natural Gas Internal Combustion Engine, Petroleum Liquids
Status: Standby/Backup

This site runs on more than one energy source. EIA-860M capacity splits: Petroleum 6 MW, Natural gas 4 MW. It is filed here under Petroleum, the source with the most capacity.

Every plant City of Montezuma - (IA) reports to EIA →

Montezuma: FAQ

Where is Montezuma?: In Poweshiek County, Iowa (IA). 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 Montezuma?: 10 MW of nameplate capacity across 8 units, as of the EIA-860M release for 2026-07.
Who owns Montezuma?: EIA-860M names City of Montezuma - (IA) 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 Montezuma LLC?: Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — City of Montezuma - (IA) 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 "Montezuma LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
Is Montezuma still running?: EIA-860M files it as "Standby/Backup" for 2026-07. Statuses change monthly, and this page follows the monthly release.