Darby Power, LLC
Pickaway County, Ohio · EIA plant ID 55247 · Operator: Darby Power, LLC
Nameplate564MWSummer 480 MW
Generators6in service
Net generation544GWh12 mo to Dec 2025
Capacity factor13%gas/coal/oil units, summer MW
Heat rate12,875Btu/kWhfossil units, electric fuel, HHV
First online2001Runs 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 | 37.7 | 2.2% | 13,665 |
| 2002 | 100.9 | 2.9% | 12,502 |
| 2003 | 8.6 | 0.2% | 16,020 |
| 2004 | 5.1 | 0.1% | 21,582 |
| 2005 | 23.7 | 0.6% | 14,584 |
| 2006 | 20.3 | 0.5% | 14,902 |
| 2007 | 85.5 | 2.2% | 12,455 |
| 2008 | 25.7 | 0.7% | 12,435 |
| 2009 | 14 | 0.4% | 12,600 |
| 2010 | 38.1 | 1.0% | 12,930 |
| 2011 | 35.2 | 0.9% | 12,430 |
| 2012 | 77 | 2.0% | 12,106 |
| 2013 | 46.3 | 1.2% | 12,039 |
| 2014 | 31.8 | 0.8% | 11,679 |
| 2015 | 58.1 | 1.5% | 12,170 |
| 2016 | 68.1 | 1.8% | 12,277 |
| 2017 | 145.5 | 3.8% | 12,943 |
| 2018 | 108.7 | 2.9% | 26,866 |
| 2019 | 389.8 | 9.3% | 12,660 |
| 2020 | 387.9 | 9.2% | 12,640 |
| 2021 | 359.1 | 8.5% | 13,131 |
| 2022 | 344.7 | 8.2% | 12,016 |
| 2023 | 557.3 | 13.3% | 12,587 |
| 2024 | 510.4 | 12.1% | 12,406 |
| 2025 | 543.9 | 12.9% | 12,875 |
Fuel capability
Gas-fired turbines (CT/GT/CA/CS) that can also burn liquid fuel. EIA-860 Schedule 3 for capability, EIA-923 for actual burn.
StatusLikely still dual fuel
Liquid fuel burned · 36 mo152,117 MMBtu
Last month with liquid burnDec 2025
Switch while operatingYes
Net summer MW on gas480
Net summer MW on oil480
Time gas → oilup to 1 h (EIA 1H)
Time oil → gasup to 1 h (EIA 1H)
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 |
|---|---|---|---|---|---|---|---|---|
| GT1 | Natural Gas Fired Combustion Turbine | GT | 94 | 80 | May 2001 | Operating | — | coming soon |
| GT2 | Natural Gas Fired Combustion Turbine | GT | 94 | 80 | May 2001 | Operating | — | coming soon |
| GT3 | Natural Gas Fired Combustion Turbine | GT | 94 | 80 | May 2001 | Operating | — | coming soon |
| GT4 | Natural Gas Fired Combustion Turbine | GT | 94 | 80 | May 2001 | Operating | — | coming soon |
| GT5 | Natural Gas Fired Combustion Turbine | GT | 94 | 80 | May 2002 | Operating | — | coming soon |
| GT6 | Natural Gas Fired Combustion Turbine | GT | 94 | 80 | May 2002 | Operating | — | coming soon |
Owner / operator
Operator: Darby Power, LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Cornerstone Generation | 100.0% | 564 MW |
Nearby plants
Within 80 km.
| Buckeye Solar | 100 MW | 12.8 km |
| Springwater Solar, LLC | — | 14.3 km |
| Pickaway Solar | 100 MW | 17.1 km |
| Fox Squirrel Solar | 577 MW | 17.7 km |
| Big Plain Solar, LLC | 196 MW | 20.4 km |
| Tosoh SMD | 4 MW | 22.3 km |