Williams
Coal power plant in Berkeley County, South Carolina. 659.7 MW of nameplate capacity across 1 generator, operated by South Carolina Genertg Co, Inc.
Also known as Williams Station · EIA plant 3298
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Key facts
- Capacity
- 659.7 MWNameplate
- Generators
- 1 operatingEIA-860M, August 2026
- Operating since
- July 1973First generator online
- Operator
- South Carolina Genertg Co, IncEIA operator ID 17554
- Grid
- SCEGBalancing authority SCEG
- Price nodes
- None linkedNo verified ISO node
- Location
- Berkeley County, SC33.0158, −79.9297
- EIA plant ID
- 3298EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Williams produces
Free · EIA-923Net generation, 2025
2.45 TWh
2,447,008 MWh, final
Capacity factor, 2025
42.3%
2024: 32.8%
January to July 2026
1.38 TWh
Provisional
Range, 2015 to 2025
1.7–3.7
TWh a year. Low 2022, high 2015
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | 4,353,342 | Not reported | 12 of 12 |
| 2001 | 4,193,258 | Not reported | 12 of 12 |
| 2002 | 4,428,464 | Not reported | 12 of 12 |
| 2003 | 2,580,967 | Not reported | 9 of 12 |
| 2004 | 3,597,057 | Not reported | 12 of 12 |
| 2005 | 4,798,392 | Not reported | 12 of 12 |
| 2006 | 4,491,471 | Not reported | 12 of 12 |
| 2007 | 3,834,953 | Not reported | 12 of 12 |
| 2008 | 4,120,498 | Not reported | 12 of 12 |
| 2009 | 3,812,638 | Not reported | 12 of 12 |
| 2010 | 3,421,226 | 56.9% | 12 of 12 |
| 2011 | 2,742,673 | 45.6% | 12 of 12 |
| 2012 | 3,723,042 | 61.7% | 12 of 12 |
| 2013 | 3,344,813 | 55.6% | 12 of 12 |
| 2014 | Not reported | Not reported | 0 of 12 |
| 2015 | 3,735,726 | 62.1% | 12 of 12 |
| 2016 | 2,992,397 | Not reported | 12 of 12 |
| 2017 | 2,608,439 | 41.7% | 12 of 12 |
| 2018 | 2,962,991 | 47.4% | 12 of 12 |
| 2019 | 2,557,366 | 40.9% | 12 of 12 |
| 2020 | 1,711,903 | Not reported | 7 of 12 |
| 2021 | 2,423,999 | 42.4% | 11 of 12 |
| 2022 | 1,741,944 | Not reported | 12 of 12 |
| 2023 | 1,994,060 | 34.5% | 12 of 12 |
| 2024 | 1,898,619 | 32.8% | 12 of 12 |
| 2025 | 2,447,008 | 42.3% | 12 of 12 |
| 2026 (provisional, partial year) | 1,375,624 | 41.0% | 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
2.82M
US short tons. 2024: 2.29M
SO₂, 2025
432
US short tons
NOx, 2025
2,295
US short tons
CO₂ per MWh, calculated
1.15 t
About 2,306 lb per MWh
1 of 1 EPA units reported CO₂ in 2025 (WIL1, WIL4, WIL5), matched to EIA plant 3298 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
102,503
million gallons
Consumption, 2024
169
million gallons
Source
Back River Reservoir
Surface, Fresh. Once-through
Watershed stress
Very low/none · 0.151
USGS SUI, HUC12 Upper Cooper River
12 of 12 cooling months report withdrawal. SUI of the source river HUC12 within 3 km. Blank volumes are unreported, not zero.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| ST1 | Conventional Steam Coal | 659.7 | July 1973 |
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 Genertg Co, Inc 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.
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Power plants near Williams
Questions about Williams
How much power does Williams produce?
Williams reported 2,447,008 MWh (2.45 TWh) of net generation in 2025, a 42.3% capacity factor on 659.7 MW of nameplate capacity. From January to July 2026 it reported 1.38 TWh, which is provisional.
Where is Williams?
Williams is in Berkeley County, South Carolina, at 33.0158, −79.9297. It is in the Dominion Energy South Carolina balancing area (SCEG).
Who operates Williams?
EIA-860M for August 2026 lists South Carolina Genertg Co, Inc as the operator (EIA operator ID 17554). The operator is not always the owner.
When did Williams start operating?
Its first generator began operating in July 1973, 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