Osage Dam
Osage Dam is a 208 MW hydroelectric power plant in Miller County, Missouri, operated by Union Electric Co - (MO). EIA-860M lists 8 generating units here, inside MISO. Its units entered service between 1931 and 1953.
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
- 208 MW
- 234 MW net summer
- Generating units
- 8
- In service
- 1931–1953
- EIA plant ID
- 2106
Where it is
Loading map…
- County
- Miller County, Missouri
- Coordinates
- 38.2044, -92.6239
- Balancing authority
- MISO
- Sector
- Electric Utility
Units, technology and status
- Operator of record
- Union Electric Co - (MO)
- Primary energy source
- Hydro
- Technologies
- Conventional Hydroelectric
- Status
- Operating
Osage Dam: FAQ
- Where is Osage Dam?
- In Miller County, Missouri (MO). 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 Osage Dam?
- 208 MW of nameplate capacity across 8 units, as of the EIA-860M release for 2026-07.
- Who owns Osage Dam?
- EIA-860M names Union Electric Co - (MO) 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 Osage Dam LLC?
- Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Union Electric Co - (MO) 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 "Osage Dam LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
- Is Osage Dam still running?
- EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.