Winyah
Coal power plant in Georgetown County, South Carolina. 1,275.8 MW of nameplate capacity across 4 generators, operated by South Carolina Public Service Authority.
Also known as Winyah Generating Plant · EIA plant 6249
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 1,275.8 MWNameplate
- Generators
- 4 operatingEIA-860M, August 2026
- Operating since
- March 1975First generator online
- Operator
- South Carolina Public Service AuthorityEIA operator ID 17543
- Grid
- SCBalancing authority SC
- Price nodes
- None linkedNo verified ISO node
- Location
- Georgetown County, SC33.3318, −79.3572
- EIA plant ID
- 6249EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Winyah produces
Free · EIA-923Net generation, 2025
4.22 TWh
4,216,009 MWh, final
Capacity factor, 2025
37.7%
2024: Not reported
January to July 2026
2.84 TWh
Provisional
Range, 2015 to 2025
1.2–4.2
TWh a year. Low 2017, high 2025
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | 7,753,335 | Not reported | 12 of 12 |
| 2001 | 7,563,783 | Not reported | 12 of 12 |
| 2002 | 7,720,938 | Not reported | 12 of 12 |
| 2003 | 7,681,065 | Not reported | 12 of 12 |
| 2004 | 7,690,054 | Not reported | 12 of 12 |
| 2005 | 7,842,117 | Not reported | 12 of 12 |
| 2006 | 7,994,258 | Not reported | 12 of 12 |
| 2007 | 7,565,610 | Not reported | 12 of 12 |
| 2008 | 3,130,633 | Not reported | 6 of 12 |
| 2009 | 5,863,401 | Not reported | 12 of 12 |
| 2010 | 6,070,136 | 55.0% | 12 of 12 |
| 2011 | 5,078,956 | 46.0% | 12 of 12 |
| 2012 | 2,512,245 | 22.7% | 12 of 12 |
| 2013 | 1,289,106 | 11.7% | 12 of 12 |
| 2014 | 1,478,908 | 40.8% | 4 of 12 |
| 2015 | 3,910,602 | 35.4% | 12 of 12 |
| 2016 | 2,210,462 | Not reported | 12 of 12 |
| 2017 | 1,214,025 | 11.0% | 12 of 12 |
| 2018 | 1,582,808 | 14.3% | 12 of 12 |
| 2019 | 712,311 | 7.1% | 11 of 12 |
| 2020 | 2,281,473 | 20.6% | 12 of 12 |
| 2021 | 3,084,266 | 27.9% | 12 of 12 |
| 2022 | 2,327,159 | Not reported | 12 of 12 |
| 2023 | 2,646,676 | 24.0% | 12 of 12 |
| 2024 | 3,633,545 | Not reported | 12 of 12 |
| 2025 | 4,216,009 | 37.7% | 12 of 12 |
| 2026 (provisional, partial year) | 2,844,785 | 43.8% | 7 of 7 |
* 2026 covers January to July and is provisional. Capacity factor is net generation divided by nameplate capacity times the hours of each reported month.
Power prices and basis
Free accountNo verified ISO price node is linked to this plant, or its price history could not load.
Emissions
Free · EPA CAMPDCO₂, 2025
4.96M
US short tons. 2024: 4.33M
SO₂, 2025
3,108
US short tons
NOx, 2025
2,404
US short tons
CO₂ per MWh, calculated
1.18 t
About 2,352 lb per MWh
4 of 4 EPA units reported CO₂ in 2025 (1, 2, 3, 4), matched to EIA plant 6249 through the EPA–EIA crosswalk. The per-MWh rate is EPA CO₂ divided by EIA-923 net generation. The two reporting boundaries can differ.
Water use
Free · EIA-923 cooling, USGSWithdrawal, 2024
155,070
million gallons
Consumption, 2024
1,449
million gallons
Source
Wadmacon Creek
Surface, Fresh. Recirculating with cooling pond
Watershed stress
Low · 0.381
USGS SUI, HUC12 Pennyroyal Creek
47 of 48 cooling months report withdrawal. SUI of the HUC12 containing the plant. Cooling-pond plants report water circulated through the pond as withdrawal, so withdrawal is far above consumption. Blank volumes are unreported, not zero.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| 1 | Conventional Steam Coal | 330.8 | March 1975 |
| 2 | Conventional Steam Coal | 315.0 | July 1977 |
| 3 | Conventional Steam Coal | 315.0 | May 1980 |
| 4 | Conventional Steam Coal | 315.0 | November 1981 |
Ownership and offtake
ProOwnership and offtake are part of Pro
Owners and their shares, parent companies, and power purchase agreements with their buyers. EIA-860M lists South Carolina Public Service Authority as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
Generation potential vs reported
Monthly potential at seasonal net capability, next to EIA-923 output. Shows how much of the plant's capability was used.
300 analyst questions a month, plus MCP
Query Winyah and 14,224 other projects from Claude or your own tools. Free accounts get 1 question a day.
Power plants near Winyah
More plants operated by South Carolina Public Service Authority
Questions about Winyah
How much power does Winyah produce?
Winyah reported 4,216,009 MWh (4.22 TWh) of net generation in 2025, a 37.7% capacity factor on 1,275.8 MW of nameplate capacity. From January to July 2026 it reported 2.84 TWh, which is provisional.
Where is Winyah?
Winyah is in Georgetown County, South Carolina, at 33.3318, −79.3572. It is in the South Carolina Public Service Authority balancing area (SC).
Who operates Winyah?
EIA-860M for August 2026 lists South Carolina Public Service Authority as the operator (EIA operator ID 17543). The operator is not always the owner.
When did Winyah start operating?
Its first generator began operating in March 1975, according to EIA-860M.
Sources
- EIA-860 2025 (final) and EIA-860M August 2026: plant, generators, capacity, operator and location
- EIA-923 monthly net generation, 2000 to July 2026 (2026 provisional)
- EPA CAMPD annual emissions through the EPA–EIA crosswalk, 1995 to 2025
- EIA-923 cooling water 2024 and the USGS surface water supply and use index, Water years 2010-2020 (Oct 2009 to Sep 2020), mean of monthly values
- Plant names from OpenStreetMap, © OpenStreetMap contributors (ODbL)
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page