Horseshoe Lake
Oklahoma County, Oklahoma · EIA plant ID 2951 · Operator: Oklahoma Gas & Electric Co
448 MW under construction · 448 MW planned (Natural Gas Fired Combustion Turbine), first expected Oct 2026 · EIA-860M
×383 MW natural gas retired since 2020 (latest Dec 2024)
Nameplate564MWSummer 468 MW
Generators3in service · 448 MW building
Net generation443GWh12 mo to Dec 2025
Capacity factor11%gas/coal/oil units, summer MW
Heat rate11,729Btu/kWhfossil units, electric fuel, HHV
First online1969Runs as peaking
Monthly net generation
EIA-923, all units at the plant. Net of station use; storage can go negative.
FinalPreliminary
Capacity factor by year
Net MWh ÷ (summer MW × hours), gas/coal/oil units. Each year uses that year's EIA-860 ratings; the hollow dot is the latest 12 months.
Heat rate by year
Electric fuel MMBtu × 1000 ÷ net MWh (Btu/kWh, HHV), fossil units only; CT + CA counted as one combined-cycle block.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2001 | 1,072.3 | — | — |
| 2002 | 1,289.5 | — | — |
| 2003 | 962.1 | 12.8% | 11,597 |
| 2004 | 996 | 13.1% | 12,513 |
| 2005 | 698.4 | 9.0% | 12,695 |
| 2006 | 1,008.1 | 13.1% | 11,315 |
| 2007 | 1,115.4 | 14.5% | 11,668 |
| 2008 | 903.4 | 11.8% | 11,260 |
| 2009 | 877.9 | 11.7% | 11,397 |
| 2010 | 1,641.4 | 21.9% | 11,615 |
| 2011 | 1,010.2 | 13.4% | 11,363 |
| 2012 | 1,073.8 | 13.8% | 11,396 |
| 2013 | 746.3 | 10.1% | 11,923 |
| 2014 | 866.7 | 11.1% | 11,445 |
| 2015 | 475.6 | 6.1% | 11,287 |
| 2016 | 717 | 9.2% | 11,358 |
| 2017 | 356.9 | 4.7% | 11,368 |
| 2018 | 777.7 | 10.3% | 11,255 |
| 2019 | 1,037.6 | 13.7% | 10,728 |
| 2020 | 1,048.5 | 13.7% | 11,220 |
| 2021 | 766.5 | 10.4% | 11,587 |
| 2022 | 564.2 | 7.6% | 11,591 |
| 2023 | 865.2 | 11.7% | 10,498 |
| 2024 | 614.9 | 15.0% | 11,608 |
| 2025 | 443.3 | 10.8% | 11,729 |
Generators
EIA-860 (annual) with EIA-860M updates through Sep 2026. EIA-923 reports generation by plant, prime mover and fuel, not by unit, so unit-level output isn't shown.
| Gen ID | Technology | Prime mover | Nameplate MW | Summer MW | Online | Status | Planned retirement | OEM / model |
|---|---|---|---|---|---|---|---|---|
| 10 | Natural Gas Fired Combustion Turbine | GT | 60.5 | 45.8 | Jun 2001 | Operating | — | coming soon |
| 8 | Natural Gas Steam Turbine | ST | 443 | 377 | Jun 1969 | Operating | — | coming soon |
| 9 | Natural Gas Fired Combustion Turbine | GT | 60.5 | 45 | Jun 2001 | Operating | — | coming soon |
| 11 | Natural Gas Fired Combustion Turbine | GT | 224 | 224 | planned Oct 2026 | Under construction | — | coming soon |
| 12 | Natural Gas Fired Combustion Turbine | GT | 224 | 224 | planned Oct 2026 | Under construction | — | coming soon |
| 13 | Natural Gas Fired Combustion Turbine | GT | 224 | 224 | planned Feb 2029 | Planned | — | coming soon |
| 14 | Natural Gas Fired Combustion Turbine | GT | 224 | 224 | planned Feb 2029 | Planned | — | coming soon |
| 6 | Natural Gas Steam Turbine | ST | 163 | 170 | Apr 1958 | Retired Jan 2024 | — | coming soon |
| GT7 | Natural Gas Fired Combustion Turbine | GT | 27 | — | Jun 1963 | Retired Mar 2017 | — | coming soon |
| ST7 | Natural Gas Steam Turbine | ST | 220 | — | Jun 1963 | Retired Dec 2024 | — | coming soon |
Owner / operator
Operator: Oklahoma Gas & Electric Co. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Oklahoma Gas & Electric Co | 100.0% | 564 MW |
Nearby plants
Within 80 km.
| Redbud Power Plant | 1,434 MW | 20.1 km |
| Tinker | 178 MW | 20.4 km |
| Norman Solar | 2 MW | 35.4 km |
| University of Oklahoma | 19 MW | 41 km |
| Frontier | 131 MW | 42.1 km |
| McClain Energy Facility | 551 MW | 44 km |