Cimarron River
Seward County, Kansas · EIA plant ID 1230 · Operator: Sunflower Electric Power Corp
Nameplate65MWSummer 66 MW
Generators2in service
Net generation30GWh12 mo to Dec 2025
Capacity factor5%gas/coal/oil units, summer MW
Heat rate11,530Btu/kWhfossil units, electric fuel, HHV
First online1963Runs 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 | 73.3 | — | — |
| 2002 | 104.4 | — | — |
| 2003 | 79.9 | 12.7% | 13,877 |
| 2004 | 55.6 | 8.8% | 16,074 |
| 2005 | 100.8 | 16.0% | 14,480 |
| 2006 | 139.3 | 21.2% | 13,947 |
| 2007 | 123.7 | 18.8% | 13,874 |
| 2008 | 69.6 | 10.3% | 12,356 |
| 2009 | 107.4 | 15.9% | 11,216 |
| 2010 | 63.4 | 9.4% | 12,539 |
| 2011 | 75.8 | 11.6% | 11,896 |
| 2012 | 182.9 | 27.8% | 11,718 |
| 2013 | 128.7 | 19.6% | 11,434 |
| 2014 | 29.8 | 5.2% | 11,760 |
| 2015 | 0.9 | 0.2% | 21,521 |
| 2016 | 0.9 | 0.2% | 11,489 |
| 2017 | 1.1 | 0.2% | 12,503 |
| 2018 | 0.6 | 0.1% | 12,010 |
| 2019 | 0.7 | 0.1% | 14,889 |
| 2020 | 0.5 | 0.1% | 12,640 |
| 2021 | 0.6 | 0.1% | 11,170 |
| 2022 | 4.6 | 0.8% | 11,025 |
| 2023 | 25.8 | 4.4% | 10,803 |
| 2024 | 57.7 | 9.8% | 11,155 |
| 2025 | 30.3 | 5.3% | 11,530 |
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 |
|---|---|---|---|---|---|---|---|---|
| 1 | Natural Gas Steam Turbine | ST | 50 | 52.1 | Oct 1963 | Operating | — | coming soon |
| 2 | Natural Gas Fired Combustion Turbine | GT | 15 | 13.7 | Feb 1968 | Operating (Standby / backup) | — | coming soon |
Owner / operator
Operator: Sunflower Electric Power Corp. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Sunflower Electric Power Corp | 100.0% | 65 MW |
Nearby plants
Within 80 km.
| Arkalon Ethanol LLC | 3 MW | 6.7 km |
| Meade | 8 MW | 40.5 km |
| Tri County - TenK | 1 MW | 50.7 km |
| Hugoton 2 | 19 MW | 51.2 km |
| Rubart | 120 MW | 53.3 km |
| Buffalo Dunes Wind Project | 250 MW | 58.2 km |