St Marys IC
Bethel County, Alaska · EIA plant ID 6338 · Operator: Alaska Village Elec Coop, Inc
×2 MW oil retired since 2020 (latest Nov 2022)
Nameplate5MWSummer 5 MW
Generators4in service
Net generation6GWh12 mo to Dec 2025
Capacity factor14%gas/coal/oil units, summer MW
Heat rate8,944Btu/kWhfossil units, electric fuel, HHV
First online2022Runs 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 | 2.9 | 15.7% | 11,241 |
| 2002 | 2.8 | 15.1% | 10,432 |
| 2003 | 2.9 | 15.9% | 6,138 |
| 2004 | 2.9 | 16.0% | 10,092 |
| 2005 | 2.9 | 15.8% | 10,563 |
| 2006 | 3 | 16.2% | 10,344 |
| 2007 | 2.9 | 16.4% | 10,229 |
| 2008 | 3 | 16.9% | 9,743 |
| 2009 | 3.1 | 17.5% | 9,679 |
| 2010 | 3.1 | 17.9% | 10,125 |
| 2011 | 3.2 | 18.1% | 9,423 |
| 2012 | 3.3 | 18.6% | 10,237 |
| 2013 | 3.2 | 18.1% | 10,413 |
| 2014 | 3 | 16.9% | 10,585 |
| 2015 | 3 | 17.3% | 10,343 |
| 2016 | 3 | 17.0% | 11,158 |
| 2017 | 3 | 17.1% | 9,916 |
| 2018 | 3 | 17.3% | 11,023 |
| 2019 | 3 | 17.1% | 7,126 |
| 2020 | 3.7 | 20.9% | 5,795 |
| 2021 | 5.7 | 32.5% | 4,647 |
| 2022 | 5.9 | 23.7% | 6,811 |
| 2023 | 5.9 | 14.5% | 7,064 |
| 2024 | 5.9 | 14.7% | 6,739 |
| 2025 | 5.6 | 13.9% | 8,944 |
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 |
|---|---|---|---|---|---|---|---|---|
| 1C | Petroleum Liquids | IC | 0.5 | 0.5 | Oct 2022 | Operating | — | coming soon |
| 2A | Petroleum Liquids | IC | 0.5 | 0.5 | Oct 2022 | Operating | — | coming soon |
| 3A | Petroleum Liquids | IC | 1.8 | 1.8 | Oct 2022 | Operating | — | coming soon |
| 4 | Petroleum Liquids | IC | 1.8 | 1.8 | Oct 2022 | Operating | — | coming soon |
| 1 | Petroleum Liquids | IC | 0.6 | 0.6 | May 1977 | Retired Dec 2006 | — | coming soon |
| 1B | Petroleum Liquids | IC | 0.5 | 0.5 | Dec 2006 | Retired Nov 2022 | — | coming soon |
| 2 | Petroleum Liquids | IC | 0.6 | 0.6 | Nov 1980 | Retired Nov 2022 | — | coming soon |
| 3 | Petroleum Liquids | IC | 0.9 | 0.9 | Nov 1974 | Retired Nov 2022 | — | coming soon |
Owner / operator
Operator: Alaska Village Elec Coop, Inc. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Alaska Village Elec Coop, Inc | 100.0% | 5 MW |
Nearby plants
Within 80 km.
| Pilot Station | 1 MW | 19.9 km |
| Mountain Village | 1 MW | 29.2 km |
| Marshall | 1 MW | 60 km |