Osage Dam
Hydro power plant in Miller County, Missouri. 208 MW of nameplate capacity across 8 generators, operated by Union Electric Co - (MO).
Also known as Bagnell Dam · EIA plant 2106
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 208 MWNameplate
- Generators
- 8 operatingEIA-860M, August 2026
- Operating since
- October 1931First generator online
- Operator
- Union Electric Co - (MO)EIA operator ID 19436
- Grid
- MISOBalancing authority MISO
- Price nodes
- 8 MISO nodesResource nodes with prices
- Location
- Miller County, MO38.2044, −92.6239
- EIA plant ID
- 2106EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Osage Dam produces
Free · EIA-923Net generation, 2025
499 GWh
498,856 MWh, final
Capacity factor, 2025
27.4%
2024: 27.2%
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2015 to 2025
0.2–1.2
TWh a year. Low 2023, high 2019
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | 177,813 | Not reported | 12 of 12 |
| 2001 | 449,861 | Not reported | 12 of 12 |
| 2002 | 436,453 | Not reported | 12 of 12 |
| 2003 | 187,944 | Not reported | 12 of 12 |
| 2004 | 693,729 | Not reported | 12 of 12 |
| 2005 | 540,013 | Not reported | 12 of 12 |
| 2006 | 75,858 | Not reported | 12 of 12 |
| 2007 | 652,891 | Not reported | 12 of 12 |
| 2008 | 948,673 | Not reported | 12 of 12 |
| 2009 | 957,339 | Not reported | 12 of 12 |
| 2010 | 813,835 | 44.7% | 12 of 12 |
| 2011 | 499,147 | 27.4% | 12 of 12 |
| 2012 | 298,261 | 16.3% | 12 of 12 |
| 2013 | 667,257 | 36.6% | 12 of 12 |
| 2014 | 232,190 | 12.7% | 12 of 12 |
| 2015 | 754,198 | 41.4% | 12 of 12 |
| 2016 | 609,185 | 33.3% | 12 of 12 |
| 2017 | 624,910 | 34.3% | 12 of 12 |
| 2018 | 340,041 | 18.7% | 12 of 12 |
| 2019 | 1,215,960 | 66.7% | 12 of 12 |
| 2020 | 879,862 | 48.2% | 12 of 12 |
| 2021 | 861,599 | 47.3% | 12 of 12 |
| 2022 | 541,607 | 29.7% | 12 of 12 |
| 2023 | 176,120 | 9.7% | 12 of 12 |
| 2024 | 497,107 | 27.2% | 12 of 12 |
| 2025 | 498,856 | 27.4% | 12 of 12 |
| 2026 (provisional, partial year) | Not reported | Not reported | 0 of 7 |
* 2026 covers January to July and is provisional. Capacity factor is net generation divided by nameplate capacity times the hours of each reported month.
Power prices and basis
Free account · MISOEmissions
Free · EPA CAMPDNo EPA emissions units are linked to this plant.
Water use
Free · EIA-923 cooling, USGSNo EIA cooling-water record for this plant in 2024. Plants without steam cooling, such as wind, solar and batteries, do not report cooling water.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| 1 | Conventional Hydroelectric | 27.5 | October 1931 |
| 2 | Conventional Hydroelectric | 27.5 | October 1931 |
| 3 | Conventional Hydroelectric | 27.5 | October 1931 |
| 4 | Conventional Hydroelectric | 27.5 | October 1931 |
| 5 | Conventional Hydroelectric | 27.5 | October 1931 |
| 6 | Conventional Hydroelectric | 27.5 | October 1931 |
| 7 | Conventional Hydroelectric | 21.5 | October 1953 |
| 8 | Conventional Hydroelectric | 21.5 | October 1953 |
Ownership and offtake
ProOwnership and offtake are part of Pro
Owners and their shares, parent companies, and power purchase agreements with their buyers. EIA-860M lists Union Electric Co - (MO) as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
300 analyst questions a month, plus MCP
Query Osage Dam and 14,224 other projects from Claude or your own tools. Free accounts get 1 question a day.
Power plants near Osage Dam
More plants operated by Union Electric Co - (MO)
Questions about Osage Dam
How much power does Osage Dam produce?
Osage Dam reported 498,856 MWh (499 GWh) of net generation in 2025, a 27.4% capacity factor on 208 MW of nameplate capacity.
Where is Osage Dam?
Osage Dam is in Miller County, Missouri, at 38.2044, −92.6239. It is in the Midcontinent Independent Transmission System Operator, Inc.. balancing area (MISO).
Who operates Osage Dam?
EIA-860M for August 2026 lists Union Electric Co - (MO) as the operator (EIA operator ID 19436). The operator is not always the owner.
When did Osage Dam start operating?
Its first generator began operating in October 1931, according to EIA-860M.
Does InfraMap have power prices for Osage Dam?
Yes. InfraMap has MISO day-ahead and real-time prices at 8 price nodes linked to Osage Dam, with the hub price and node-to-hub basis. Prices are free with an InfraMap account; pricing node names are part of InfraMap Pro.
Sources
- EIA-860 2025 (final) and EIA-860M August 2026: plant, generators, capacity, operator and location
- EIA-923 monthly net generation, 2000 to July 2026 (2026 provisional)
- MISO day-ahead and real-time prices; node and hub assignments as of 2026-10-05
- Plant names from OpenStreetMap, © OpenStreetMap contributors (ODbL)
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page