Anchorage 1
Anchorage County, Alaska · EIA plant ID 75 · Operator: Chugach Electric Assn Inc
Nameplate78MWSummer 62 MW
Generators3in service
Net generation10GWh12 mo to Dec 2025
Capacity factor2%gas/coal/oil units, summer MW
Heat rate14,937Btu/kWhfossil units, electric fuel, HHV
First online1972Runs as peaking
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 | 22.9 | — | — |
| 2002 | 42 | — | — |
| 2003 | 20.7 | 3.0% | 18,857 |
| 2004 | 44.7 | 7.1% | 18,116 |
| 2005 | 30.1 | 5.6% | 18,865 |
| 2006 | 26.4 | 4.9% | 17,459 |
| 2007 | 53.6 | 8.3% | 14,631 |
| 2008 | 73.6 | 9.2% | 11,006 |
| 2009 | 93.7 | 11.8% | 12,084 |
| 2010 | 55.4 | 7.2% | 12,018 |
| 2011 | 91.3 | 11.8% | 12,169 |
| 2012 | 54.6 | 6.9% | 12,643 |
| 2013 | 22.3 | 2.8% | 15,986 |
| 2014 | 33.6 | 4.3% | 12,878 |
| 2015 | 47.8 | 6.0% | 12,050 |
| 2016 | 45.1 | 5.8% | 12,098 |
| 2017 | 50.8 | 9.3% | 13,122 |
| 2018 | 28.9 | 5.3% | 13,392 |
| 2019 | 14.7 | 2.7% | 15,437 |
| 2020 | 7.6 | 1.4% | 15,044 |
| 2021 | 2.3 | 0.4% | — |
| 2022 | 17.8 | 3.3% | 13,251 |
| 2023 | 37.1 | 6.8% | 11,173 |
| 2024 | 41.2 | 7.5% | 13,549 |
| 2025 | 10.3 | 1.9% | 14,937 |
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.
StatusLikely still dual fuel
Liquid fuel burned · 36 mo4,194 MMBtu
Last month with liquid burnDec 2025
Switch while operatingYes
Net summer MW on gas31
Net summer MW on oil31
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 |
|---|---|---|---|---|---|---|---|---|
| 3R | Natural Gas Fired Combustion Turbine | GT | 48.9 | 29.3 | Aug 2007 | Operating | — | coming soon |
| 4 | Natural Gas Fired Combustion Turbine | GT | 27 | 31.1 | Mar 1972 | Operating (Out of service) | — | coming soon |
| P1 BS | Petroleum Liquids | IC | 2 | 2 | Feb 2012 | Operating | — | coming soon |
| 1 | Natural Gas Fired Combustion Turbine | GT | 12.5 | 14 | Nov 1962 | Retired Dec 2016 | — | coming soon |
| 2 | Natural Gas Fired Combustion Turbine | GT | 12.5 | 14 | Mar 1962 | Retired Dec 2016 | — | coming soon |
| 3 | Natural Gas Fired Combustion Turbine | GT | 16.3 | 17.7 | Dec 1968 | Retired Aug 2004 | — | coming soon |
| D1 | Petroleum Liquids | IC | 1.1 | 1.2 | — | Retired Jan 2010 | — | coming soon |
| D2 | Petroleum Liquids | IC | 1.1 | 1.4 | — | Retired Jan 2010 | — | 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% | 78 MW |
Nearby plants
Within 80 km.
| International Battery Substation (IBSS) | 40 MW | 6.3 km |
| International | retired | 6.4 km |
| Southcentral Power Project | 204 MW | 6.4 km |
| George M Sullivan Generation Plant 2 | 347 MW | 8 km |
| JBER Landfill Gas Power Plant | 12 MW | 15.4 km |
| Fire Island Wind | 18 MW | 22.7 km |