Petersburg
Oil power plant in Wrangell Petersburg, Alaska. 14.7 MW of nameplate capacity across 8 generators, operated by Petersburg Borough - (AK).
Also known as EIA plant 91
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 14.7 MWOil 12.9 · Hydro 1.8
- Generators
- 8 operatingEIA-860M, August 2026
- Operating since
- October 1965First generator online
- Operator
- Petersburg Borough - (AK)EIA operator ID 14856
- Grid
- Not reported
- Price nodes
- None linkedNo verified ISO node
- Location
- Wrangell Petersburg, AK56.8110, −132.9571
- EIA plant ID
- 91EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Petersburg produces
Free · EIA-923Net generation, 2025
14.4 GWh
14,386 MWh, final
Capacity factor, 2025
11.2%
2024: 10.1%
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2015 to 2025
0.8–14.4
GWh a year. Low 2023, high 2025
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | 0 | Not reported | 12 of 12 |
| 2001 | 14,065 | Not reported | 12 of 12 |
| 2002 | 12,289 | Not reported | 12 of 12 |
| 2003 | 12,289 | Not reported | 12 of 12 |
| 2004 | 12,306 | Not reported | 12 of 12 |
| 2005 | 13,966 | Not reported | 12 of 12 |
| 2006 | 13,249 | Not reported | 12 of 12 |
| 2007 | 14,502 | Not reported | 12 of 12 |
| 2008 | 14,122 | Not reported | 12 of 12 |
| 2009 | 12,614 | Not reported | 12 of 12 |
| 2010 | 11,513 | 10.7% | 12 of 12 |
| 2011 | 11,409 | 10.6% | 12 of 12 |
| 2012 | 14,066 | Not reported | 12 of 12 |
| 2013 | 12,378 | 9.5% | 12 of 12 |
| 2014 | 13,840 | 10.7% | 12 of 12 |
| 2015 | 13,476 | 10.4% | 12 of 12 |
| 2016 | 11,732 | 9.0% | 12 of 12 |
| 2017 | 12,677 | Not reported | 12 of 12 |
| 2018 | 9,319 | 7.3% | 12 of 12 |
| 2019 | 12,940 | 10.2% | 12 of 12 |
| 2020 | 14,141 | 11.1% | 12 of 12 |
| 2021 | 14,383 | 11.3% | 12 of 12 |
| 2022 | 14,363 | 11.3% | 12 of 12 |
| 2023 | 780 | Not reported | 12 of 12 |
| 2024 | 13,003 | 10.1% | 12 of 12 |
| 2025 | 14,386 | 11.2% | 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 |
|---|---|---|---|
| 4 | Conventional Hydroelectric | 1.8 | December 2023 |
| IC1 | Petroleum Liquids | 2.6 | December 1972 |
| IC3 | Petroleum Liquids | 1.2 | October 1965 |
| IC4 | Petroleum Liquids | 0.6 | March 1979 |
| IC5 | Petroleum Liquids | 0.8 | March 1979 |
| IC6 | Petroleum Liquids | 2.6 | September 1993 |
| IC7 | Petroleum Liquids | 2.6 | August 2001 |
| IC8 | Petroleum Liquids | 2.5 | October 2012 |
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 Petersburg Borough - (AK) 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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Power plants near Petersburg
Questions about Petersburg
How much power does Petersburg produce?
Petersburg reported 14,386 MWh (14.4 GWh) of net generation in 2025, a 11.2% capacity factor on 14.7 MW of nameplate capacity.
Where is Petersburg?
Petersburg is in Wrangell Petersburg, Alaska, at 56.8110, −132.9571.
Who operates Petersburg?
EIA-860M for August 2026 lists Petersburg Borough - (AK) as the operator (EIA operator ID 14856). The operator is not always the owner.
When did Petersburg start operating?
Its first generator began operating in October 1965, 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