Mill Creek (SC)
Cherokee County, South Carolina · EIA plant ID 7981 · Operator: Duke Energy Carolinas, LLC
Nameplate799MWSummer 563 MW
Generators8in service
Net generation117GWh12 mo to Dec 2025
Capacity factor2%gas/coal/oil units, summer MW
Heat rate12,810Btu/kWhfossil units, electric fuel, HHV
First online2002Runs as rarely runs
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) |
|---|---|---|---|
| 2002 | 8.2 | 3.9% | 15,452 |
| 2003 | 35.7 | 0.9% | 14,558 |
| 2004 | 71.2 | 1.4% | 13,153 |
| 2005 | 51.1 | 1.0% | 13,443 |
| 2006 | 123.2 | 2.4% | 12,729 |
| 2007 | 193.3 | 3.7% | 12,367 |
| 2008 | 33 | 0.6% | 13,742 |
| 2009 | 0.5 | 0.0% | — |
| 2010 | 90.9 | 1.7% | 12,980 |
| 2011 | 137 | 2.6% | 12,600 |
| 2012 | 125.4 | 2.4% | 12,755 |
| 2013 | 40.1 | 0.8% | 13,586 |
| 2014 | 25.2 | 0.5% | 15,449 |
| 2015 | 83.4 | 1.6% | 13,166 |
| 2016 | 102.5 | 2.1% | 13,144 |
| 2017 | 46.8 | 0.9% | 14,046 |
| 2018 | 201.2 | 4.1% | 12,559 |
| 2019 | 73.1 | 1.5% | 13,406 |
| 2020 | 70.3 | 1.4% | 13,564 |
| 2021 | 64.3 | 1.3% | 13,709 |
| 2022 | 129 | 2.6% | 13,004 |
| 2023 | 38.5 | 0.8% | 14,567 |
| 2024 | 31.9 | 0.6% | 14,954 |
| 2025 | 116.6 | 2.4% | 12,810 |
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 mo54,067 MMBtu
Last month with liquid burnDec 2025
Switch while operatingNo
Net summer MW on gas563
Net summer MW on oil563
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 |
|---|---|---|---|---|---|---|---|---|
| 1 | Natural Gas Fired Combustion Turbine | GT | 99.9 | 71 | Dec 2002 | Operating | — | coming soon |
| 2 | Natural Gas Fired Combustion Turbine | GT | 99.9 | 70 | Dec 2002 | Operating | — | coming soon |
| 3 | Natural Gas Fired Combustion Turbine | GT | 99.9 | 71 | Dec 2002 | Operating | — | coming soon |
| 4 | Natural Gas Fired Combustion Turbine | GT | 99.9 | 70 | Dec 2002 | Operating | — | coming soon |
| 5 | Natural Gas Fired Combustion Turbine | GT | 99.9 | 69 | May 2003 | Operating | — | coming soon |
| 6 | Natural Gas Fired Combustion Turbine | GT | 99.9 | 71 | May 2003 | Operating | — | coming soon |
| 7 | Natural Gas Fired Combustion Turbine | GT | 99.9 | 70 | May 2003 | Operating | — | coming soon |
| 8 | Natural Gas Fired Combustion Turbine | GT | 99.9 | 71 | May 2003 | Operating | — | coming soon |
Owner / operator
Operator: Duke Energy Carolinas, LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Duke Energy Carolinas, LLC | 100.0% | 799 MW |
Nearby plants
Within 80 km.
| Cleveland Cnty Generating Facility | 736 MW | 1.8 km |
| Roper Farm, LLC | 5 MW | 3.2 km |
| Dixon Dairy Road Solar | 4 MW | 4.7 km |
| Kings Mountain Energy Center | 544 MW | 7.8 km |
| Lux Solar, LLC | 2 MW | 9.1 km |
| 231 Dixon 74 Solar I, LLC | 2 MW | 9.4 km |