Port Wentworth Mill
Wood biomass power plant in Chatham County, Georgia. 72.3 MW of nameplate capacity across 2 generators, operated by GFC - Wentworth Mill.
Also known as EIA plant 50804
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 72.3 MWNameplate
- Generators
- 2 operatingEIA-860M, August 2026
- Operating since
- August 1991First generator online
- Operator
- GFC - Wentworth MillEIA operator ID 20505
- Grid
- SOCOBalancing authority SOCO
- Price nodes
- None linkedNo verified ISO node
- Location
- Chatham County, GA32.1561, −81.1586
- EIA plant ID
- 50804EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Port Wentworth Mill produces
Free · EIA-923Net generation, 2025
449 GWh
449,194 MWh, final
Capacity factor, 2025
70.9%
2024: 66.3%
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2015 to 2025
292.5–482.5
GWh a year. Low 2016, high 2020
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | 0 | Not reported | 12 of 12 |
| 2001 | Not reported | Not reported | 0 of 12 |
| 2002 | Not reported | Not reported | 0 of 12 |
| 2003 | 0 | Not reported | 12 of 12 |
| 2004 | 225,049 | Not reported | 12 of 12 |
| 2005 | 272,533 | Not reported | 12 of 12 |
| 2006 | 268,074 | Not reported | 12 of 12 |
| 2007 | 292,844 | Not reported | 12 of 12 |
| 2008 | 298,076 | Not reported | 12 of 12 |
| 2009 | 283,555 | Not reported | 12 of 12 |
| 2010 | 268,744 | 42.4% | 12 of 12 |
| 2011 | 271,331 | 42.8% | 12 of 12 |
| 2012 | 287,383 | 45.3% | 12 of 12 |
| 2013 | 282,595 | 44.6% | 12 of 12 |
| 2014 | 286,128 | 45.2% | 12 of 12 |
| 2015 | 305,659 | 48.3% | 12 of 12 |
| 2016 | 292,526 | 46.1% | 12 of 12 |
| 2017 | 350,407 | Not reported | 12 of 12 |
| 2018 | 450,299 | 71.1% | 12 of 12 |
| 2019 | 462,967 | 73.1% | 12 of 12 |
| 2020 | 482,478 | 76.0% | 12 of 12 |
| 2021 | 455,695 | 72.0% | 12 of 12 |
| 2022 | 471,950 | 74.5% | 12 of 12 |
| 2023 | 433,204 | 68.4% | 12 of 12 |
| 2024 | 421,036 | 66.3% | 12 of 12 |
| 2025 | 449,194 | 70.9% | 12 of 12 |
| 2026 (provisional, partial year) | Not reported | Not reported | 0 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 CAMPDNo EPA emissions units are linked to this plant.
Water use
Free · EIA-923 cooling, USGSNo EIA cooling-water record for this plant in 2024.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| GEN4 | Wood/Wood Waste Biomass | 47.3 | August 1991 |
| GEN5 | Wood/Wood Waste Biomass | 25.0 | January 2004 |
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 GFC - Wentworth Mill 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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Questions about Port Wentworth Mill
How much power does Port Wentworth Mill produce?
Port Wentworth Mill reported 449,194 MWh (449 GWh) of net generation in 2025, a 70.9% capacity factor on 72.3 MW of nameplate capacity.
Where is Port Wentworth Mill?
Port Wentworth Mill is in Chatham County, Georgia, at 32.1561, −81.1586. It is in the Southern Company Services, Inc. - Trans balancing area (SOCO).
Who operates Port Wentworth Mill?
EIA-860M for August 2026 lists GFC - Wentworth Mill as the operator (EIA operator ID 20505). The operator is not always the owner.
When did Port Wentworth Mill start operating?
Its first generator began operating in August 1991, 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)
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page