George M Sullivan Generation Plant 2
Anchorage County, Alaska · EIA plant ID 6559 · Operator: Chugach Electric Assn Inc
Nameplate347MWSummer 309 MW
Generators5in service
Net generation1,772GWh12 mo to Dec 2025
Capacity factor65%gas/coal/oil units, summer MW
Heat rate7,521Btu/kWhfossil units, electric fuel, HHV
First online1979Runs as baseload
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) |
|---|---|---|---|
| 2001 | 806.6 | — | — |
| 2002 | 739.5 | — | — |
| 2003 | 812.8 | 42.2% | 10,994 |
| 2004 | 1,002.3 | 51.9% | 10,998 |
| 2005 | 964.5 | 50.1% | 11,143 |
| 2006 | 1,280.9 | 66.5% | 10,963 |
| 2007 | 1,193.4 | 62.0% | 10,898 |
| 2008 | 1,149.5 | 59.5% | 10,353 |
| 2009 | 1,004.7 | 52.2% | 10,868 |
| 2010 | 1,048.4 | 54.4% | 10,638 |
| 2011 | 1,082.4 | 56.2% | 10,700 |
| 2012 | 1,007.1 | 52.1% | 11,140 |
| 2013 | 562.3 | 25.9% | 11,057 |
| 2014 | 493.7 | 22.7% | 11,432 |
| 2015 | 654.1 | 30.1% | 10,386 |
| 2016 | 589.7 | 27.7% | 11,038 |
| 2017 | 803.8 | 30.8% | 9,037 |
| 2018 | 843.3 | 31.1% | 8,391 |
| 2019 | 626.2 | 23.1% | 8,670 |
| 2020 | 447.5 | 16.5% | 8,970 |
| 2021 | 761.4 | 28.1% | 7,787 |
| 2022 | 908.6 | 33.5% | 8,287 |
| 2023 | 911.3 | 33.6% | 8,286 |
| 2024 | 923.3 | 34.0% | 7,765 |
| 2025 | 1,771.6 | 65.4% | 7,521 |
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 gas74
Net summer MW on oil74
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 |
|---|---|---|---|---|---|---|---|---|
| 10 | Natural Gas Fired Combined Cycle | CT | 60.4 | 50 | Feb 2017 | Operating | — | coming soon |
| 11 | Natural Gas Fired Combined Cycle | CA | 30.9 | 29 | Feb 2017 | Operating | — | coming soon |
| 7 | Natural Gas Fired Combustion Turbine | GT | 102.6 | 102.6 | Jun 1979 | Operating | — | coming soon |
| 9 | Natural Gas Fired Combined Cycle | CT | 60.4 | 50 | Feb 2017 | Operating (Standby / backup) | — | coming soon |
| GT8 | Natural Gas Fired Combustion Turbine | GT | 92.6 | 77.7 | Dec 1984 | Operating (Standby / backup) | — | coming soon |
| 5 | Natural Gas Fired Combined Cycle | CT | 38.1 | 33.8 | Jan 1975 | Retired Dec 2016 | — | coming soon |
| 6 | Natural Gas Fired Combined Cycle | CA | 33 | 34 | Mar 1979 | Retired Dec 2016 | — | coming soon |
Owner / operator
Operator: Chugach Electric Assn Inc. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Chugach Electric Assn Inc | 100.0% | 347 MW |
Nearby plants
Within 80 km.
| Anchorage 1 | 78 MW | 8 km |
| JBER Landfill Gas Power Plant | 12 MW | 8.5 km |
| Southcentral Power Project | 204 MW | 12.2 km |
| International | retired | 12.4 km |
| International Battery Substation (IBSS) | 40 MW | 12.4 km |
| Fire Island Wind | 18 MW | 30.3 km |