Great Falls (SC)
Chester County, South Carolina · EIA plant ID 3259 · Operator: Duke Energy Carolinas, LLC
Nameplate12MWSummer 12 MW
Generators4in service
Net generation0GWh12 mo to Dec 2025
Capacity factor0%hydro units, summer MW
Heat rate—thermal plants only
First online1907
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), hydro 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.
Heat rate applies to fuel-burning (thermal) units only.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2001 | 1.8 | 0.9% | — |
| 2002 | 5.7 | 2.7% | — |
| 2003 | 23 | 10.9% | — |
| 2004 | 12.6 | 6.0% | — |
| 2005 | 9 | 4.3% | — |
| 2006 | 3.7 | 1.8% | — |
| 2007 | 4.7 | 2.2% | — |
| 2008 | 0.1 | 0.0% | — |
| 2009 | 9.5 | 4.5% | — |
| 2010 | 6.1 | 2.9% | — |
| 2011 | 2.1 | 1.0% | — |
| 2012 | 7.9 | 3.8% | — |
| 2013 | 14.7 | 7.0% | — |
| 2014 | 2.3 | 1.1% | — |
| 2015 | 6 | 2.8% | — |
| 2016 | 0.2 | 0.1% | — |
| 2017 | -0 | -0.0% | — |
| 2018 | -0.1 | -0.1% | — |
| 2019 | -0.1 | -0.1% | — |
| 2020 | -0.1 | -0.1% | — |
| 2021 | 0 | 0.0% | — |
| 2022 | 0 | 0.0% | — |
| 2023 | -0.1 | -0.1% | — |
| 2024 | -0 | -0.0% | — |
| 2025 | 0 | 0.0% | — |
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 | Conventional Hydroelectric | HY | 3 | 3 | Apr 1907 | Operating | — | coming soon |
| 2 | Conventional Hydroelectric | HY | 3 | 3 | Apr 1907 | Operating | — | coming soon |
| 5 | Conventional Hydroelectric | HY | 3 | 3 | Apr 1907 | Operating | — | coming soon |
| 6 | Conventional Hydroelectric | HY | 3 | 3 | Apr 1907 | Operating | — | coming soon |
| 3 | Conventional Hydroelectric | HY | 3 | 3 | Apr 1907 | Retired May 2018 | — | coming soon |
| 4 | Conventional Hydroelectric | HY | 3 | 3 | Apr 1907 | Retired May 2018 | — | coming soon |
| 7 | Conventional Hydroelectric | HY | 3 | 3 | Apr 1907 | Retired May 2018 | — | coming soon |
| 8 | Conventional Hydroelectric | HY | 3 | 3 | Apr 1907 | Retired May 2018 | — | 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% | 12 MW |
Nearby plants
Within 80 km.
| Dearborn | 45 MW | 0.1 km |
| Cedar Creek | 45 MW | 2.5 km |
| Fishing Creek | 42 MW | 4.5 km |
| Longtown Energy Storage | — | 16 km |
| Crown | 3 MW | 18.6 km |
| Wateree Hydro | 91 MW | 30.3 km |