McIntosh Combined Cycle Facility
Effingham County, Georgia · EIA plant ID 56150 · Operator: Georgia Power Co
Nameplate1,377MWSummer 1,316 MW
Generators6in service
Net generation7,885GWh12 mo to Aug 2026
Capacity factor68%gas/coal/oil units, summer MW
Heat rate7,031Btu/kWhfossil units, electric fuel, HHV
First online2005Runs as baseload
The 12-month figures include preliminary EIA-923 months, which EIA revises. Final data runs through Dec 2025.
Monthly net generation
EIA-923, all units at the plant. Net of station use; storage can go negative.
FinalPreliminary
Capacity factor by year
Net MWh ÷ (summer MW × hours), gas/coal/oil units. Each year uses that year's EIA-860 ratings; the hollow dot is the latest 12 months.
Heat rate by year
Electric fuel MMBtu × 1000 ÷ net MWh (Btu/kWh, HHV), fossil units only; CT + CA counted as one combined-cycle block.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2005 | 2,554.5 | 42.0% | 7,283 |
| 2006 | 5,081.2 | 49.0% | 7,154 |
| 2007 | 5,523.5 | 53.3% | 7,295 |
| 2008 | 5,105.8 | 49.1% | 7,093 |
| 2009 | 7,089.3 | 64.4% | 6,978 |
| 2010 | 7,699.4 | 69.9% | 6,993 |
| 2011 | 8,163.8 | 74.2% | 7,031 |
| 2012 | 7,534 | 68.2% | 7,034 |
| 2013 | 7,920 | 71.9% | 6,985 |
| 2014 | 7,328.1 | 66.6% | 7,055 |
| 2015 | 7,595.5 | 69.0% | 7,045 |
| 2016 | 8,799.2 | 76.0% | 6,996 |
| 2017 | 8,931 | 77.3% | 6,964 |
| 2018 | 9,053.3 | 78.4% | 7,003 |
| 2019 | 8,434.8 | 73.2% | 7,024 |
| 2020 | 8,621.4 | 74.6% | 7,007 |
| 2021 | 8,586.5 | 74.5% | 7,004 |
| 2022 | 8,637.5 | 75.0% | 7,008 |
| 2023 | 9,107.2 | 79.0% | 7,004 |
| 2024 | 8,034.7 | 69.5% | 7,003 |
| 2025 | 7,857.1 | 68.2% | 7,049 |
Fuel capability
Gas-fired turbines (CT/GT/CA/CS) that can also burn liquid fuel. EIA-860 Schedule 3 for capability, EIA-923 for actual burn.
StatusListed in EIA-860, no liquid burn in 36 months
Liquid fuel burned · 36 mo0 MMBtu
Last month with liquid burn—
Switch while operatingYes
Net summer MW on gas726
Net summer MW on oil726
Time gas → oilup to 1 h (EIA 1H)
Time oil → gasup to 1 h (EIA 1H)
Generators
EIA-860 (annual) with EIA-860M updates through Sep 2026. EIA-923 reports generation by plant, prime mover and fuel, not by unit, so unit-level output isn't shown.
| Gen ID | Technology | Prime mover | Nameplate MW | Summer MW | Online | Status | Planned retirement | OEM / model |
|---|---|---|---|---|---|---|---|---|
| 10ST | Natural Gas Fired Combined Cycle | CA | 281.9 | 295 | Jun 2005 | Operating | — | coming soon |
| 11ST | Natural Gas Fired Combined Cycle | CA | 281.9 | 295 | Jun 2005 | Operating | — | coming soon |
| C10A | Natural Gas Fired Combined Cycle | CT | 203.2 | 181.8 | Jun 2005 | Operating | — | coming soon |
| C10B | Natural Gas Fired Combined Cycle | CT | 203.2 | 181.8 | Jun 2005 | Operating | — | coming soon |
| C11A | Natural Gas Fired Combined Cycle | CT | 203.2 | 181 | Jun 2005 | Operating | — | coming soon |
| C11B | Natural Gas Fired Combined Cycle | CT | 203.2 | 181 | Jun 2005 | Operating | — | coming soon |
| 10 | Natural Gas Fired Combined Cycle | CC | 688.3 | 625 | planned Jun 2005 | not_current | — | coming soon |
| 11 | Natural Gas Fired Combined Cycle | CC | 688.3 | 625 | planned Jun 2005 | not_current | — | coming soon |
Owner / operator
Operator: Georgia Power Co. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Georgia Power Co | 100.0% | 1,377 MW |
Nearby plants
Within 80 km.
| McIntosh Solar | 10 MW | 1 km |
| McIntosh | 810 MW | 1.6 km |
| Savannah River Mill | 140 MW | 2.6 km |
| Jasper | 1,068 MW | 5.6 km |
| Rincon Solar I | 18 MW | 11.4 km |
| Hardeeville | retired | 11.5 km |