- Combustion
- Operating
- 10 · 100 · 1,000 MW
Map
- Combustion
- Operating
Williams: location. Basemap: Protomaps, © OpenStreetMap contributors, ODbL.
Williams
Power plant · Coal
Key facts
Power plant · Coalran 42% of 2025 Operating- Capacity
- Capacity: sourceEIA-860M · Open licenseMW
- Commissioned
- 1973
- Net generation, 2025
- 2,447,008 MWh
- Grid
- 230 kV to Dominion Energy South Carolina (SCEG)
- Location
- Berkeley County, South Carolina
- Operated by
- South Carolina Genertg Co, Inc
Operations
- Net generation, 2025
- 2,447,008
MWh - Fuel burned, 2025
- 26,020,390
MMBtu - Capacity factor, 2025
- 42.3
% - Heat rate, 2025
- 10,634
Btu/kWh
| Year | Net generation (MWh) | Fuel burned (MMBtu) | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|---|
| 2026 (8 of 12 months) | 1,662,059 | 17,495,692 | — | 10,526 |
| 2025 | 2,447,008 | 26,020,390 | 42.3% | 10,634 |
| 2024 | 1,898,619 | 20,781,502 | 32.8% | 10,946 |
| 2023 | 1,994,060 | 20,833,152 | 34.5% | 10,448 |
| 2022 | 1,741,944 | 18,157,952 | 30.1% | 10,424 |
| 2021 (11 of 12 months) | 2,423,999 | 24,000,801 | — | 9,901 |
| 2020 | 2,681,537 | 27,568,925 | 46.3% | 10,281 |
| 2019 | 2,557,366 | 26,183,126 | 44.2% | 10,238 |
| 2018 | 2,962,991 | 29,616,946 | 51.3% | 9,996 |
| 2017 | 2,608,439 | 25,721,170 | 45.1% | 9,861 |
| 2016 | 2,992,397 | 29,345,598 | 51.6% | 9,807 |
| 2015 | 3,735,726 | 36,582,100 | 64.6% | 9,792 |
| 2014 | 3,705,242 | 36,176,355 | 64.1% | 9,764 |
| 2013 | 3,344,813 | 32,538,742 | 57.9% | 9,728 |
| 2012 | 3,723,042 | 36,195,556 | 64.2% | 9,722 |
| 2011 | 2,742,673 | 26,336,855 | 47.5% | 9,603 |
| 2010 | 3,421,226 | 32,793,562 | 59.2% | 9,585 |
| 2009 | 3,812,638 | 36,525,126 | 66.0% | 9,580 |
| 2008 | 4,120,498 | 39,745,126 | 71.1% | 9,646 |
| 2007 | 3,834,953 | 36,627,367 | 66.4% | 9,551 |
| 2006 | 4,491,471 | 42,873,931 | 77.7% | 9,546 |
| 2005 | 4,798,392 | 45,406,312 | 83.0% | 9,463 |
| 2004 | 3,597,057 | 34,214,328 | 62.1% | 9,512 |
| 2003 (9 of 12 months) | 2,580,967 | 24,466,592 | — | 9,480 |
| 2002 | 4,428,464 | 39,829,658 | 76.6% | 8,994 |
| 2001 | 4,193,258 | 40,568,927 | 72.6% | 9,675 |
How these are worked out
Net generation and fuel burned are the monthly figures EIA publishes in its bulk electricity file, from the plant's Form 923 reports; a year is the sum of its months. Capacity factor is a full year's net generation over today's nameplate capacity times the hours in that year (8,784 in a leap year), so a plant uprated or partly retired since reads against its current size; heat rate is fuel burned over net generation, for plants that burn fuel. A year with fewer than twelve months stated has no capacity factor, and a value outside the plausible range is left blank rather than shown. By month, the charts apply the same rules to each month's own hours and fuel.
Sources
3 sourcesSources
- EIA-860M
- GEMGlobal Integrated Power Tracker, Global Energy Monitor, September 2026 release (https://globalenergymonitor.org/projects/global-integrated-power-tracker), CC BY 4.0. Modified by Inframation: TransitionZero-sourced rows removed; statuses and technologies mapped to Inframation's vocabulary; figures aggregated. Copyright © Global Energy Monitor. Global Integrated Power Tracker, September 2026 release. Distributed under a Creative Commons Attribution 4.0 International License.
- EIASource: U.S. Energy Information Administration, Electricity bulk data (Form EIA-923 monthly plant series)