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Williams — Power plant · Coal · South Carolina Genertg Co, IncMAGURO ENTERPRISES LLC — Large load · SC · 12.8 km away
  • Combustion
  • Loads
  • Operating
  • Size not stated
  • 10 · 100 · 1,000 MW

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

Output

Net generation MWh by year, 2001 to 2026
Fuel burned MMBtu by year, 2001 to 2026
  • Gas
  • Coal
  • Oil

Operations detail

Details

Who’s behind it

Owner
Dominion Energy Inc.

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Technology
Coal source: “Conventional Steam Coal”
Age
53 years since 1973
Unused energy
3,332 GWh 2025Unused energyA lead, not a guarantee: MW × hours × (1 − capacity factor) for the latest year (EIA-923), gas, coal and oil plants only. Air-permit run-hour caps, heat rate (cost to run) and capacity-market or reliability obligations can rule it out.
Heat rate
10,634 Btu/kWh 2025
All 7 attributes from EIA-860M Preliminary Monthly Electric Generator Inventory
AttributeValue
Gem
Parents
Name
Dominion Energy Inc
Share pct
100
Gem entity id
E100000001193
Unit ids
G100000110945
Location id
L100000104181
EPA greenhouse gas reporting (GHGRP)
EPA FRS ID
110000353509
Subparts reported
C, D, W
NAICS code
221112
Subpart PP (CO2 supply)
No
Subpart RR (geologic sequestration)
No
Subpart UU (CO2 injection)
No
Reporting year
2023
GHGRP facility ID
1000912
Fuel burned (MMBtu), 202526,020,390
Capacity factor, 20250.423
Heat rate (Btu/kWh), 202510,633.6
Net generation (MWh), 20252,447,008.0
Balancing authority codeSCEG

Retirement

EIA-860M September 2026StatusSome generators have retired; the rest of the plant is still in service. As of EIA-860M for September 2026.
Capacity retired
53.8 MW
Generators retired
2
Capacity still in service
659.7 MW
GeneratorTechnologyNameplateStateDate
1Natural Gas Fired Combustion Turbine26.9 MWRetiredSeptember 2022
2Natural Gas Fired Combustion Turbine26.9 MWRetiredSeptember 2022

Grid

EIA-860 2025Grid fieldsAs the plant reported them to EIA-860 for 2025 (Schedule 2).
Grid voltage at the plant
230 kV
Transmission or distribution system owner
Dominion Energy South Carolina
Balancing authority
Dominion Energy South Carolina
NERC region
SERC
Transmission lines within 25 km (1)
Can the connection be reused?

A plant that retires usually leaves its substation, transmission connection and interconnection agreement behind, and those may be reusable by a new project at the same site. FERC Order No. 845 lets an interconnection customer use surplus interconnection service at an existing site, and some transmission providers' tariffs let a replacement resource take over a retiring unit's interconnection service, usually within a set time after the retirement. Whether any such right still exists here, who holds it and on what terms depends on the owner, the transmission provider and timing; this page does not establish any of that.

Ownership

2 companies2
CompanyRoleShareAs ofSource
South Carolina Genertg Co, Inc Operator EIA-860M
Dominion Energy Inc. Owner 100.0% 31 Dec 2023 EPA GHGRP

Timeline

  • Stated Units 1, 2 scheduled to retire, 53.8 MW · EIA-860M
  • In service · EIA-860M

Sources

6 sources

Sources EIA-860M · GEM · LBNL · EIA · EIA-860M Preliminary Monthly Electric Generator Inventory · EPA Greenhouse Gas Reporting Program — facility register with parent-company shares (Envirofacts pub_dim_facility; FLIGHT)

Sources

Every source and license · Attribution

View at source

Around this plant

Nearby

within 25 km
ProjectKindAwayMW
MAGURO ENTERPRISES LLC Built Large load 12.8 km

Sources EPA ICIS-Air