Petersburg
Other power plant · Wrangell Petersburg County, Alaska
Nameplate capacity
15 MW
Rank in Alaska
#44
of 150 plants
In service since
1965
October 1965
Details
- Primary fuel
- Other
- Technology
- Petroleum Liquids
- Operator
- Petersburg Borough - (AK)
- County
- Wrangell Petersburg County
- Generating units
- 8
- Share of state capacity
- 0.47%
- Rank among other plants in Alaska
- #16 of 92
- EIA plant code
- 91
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| IC1 | Petroleum Liquids | 2.6 MW | 1.7 MW | 1972 | Operating |
| IC6 | Petroleum Liquids | 2.6 MW | 2.3 MW | 1993 | Operating |
| IC7 | Petroleum Liquids | 2.6 MW | 2.3 MW | 2001 | Operating |
| IC8 | Petroleum Liquids | 2.5 MW | 2.2 MW | 2012 | Operating |
| 4 | Conventional Hydroelectric | 1.8 MW | 1.8 MW | 2023 | Operating |
| IC3 | Petroleum Liquids | 1.2 MW | 1.0 MW | 1965 | Operating |
| IC5 | Petroleum Liquids | 0.8 MW | 0.7 MW | 1979 | Operating |
| IC4 | Petroleum Liquids | 0.6 MW | 0.6 MW | 1979 | Operating |
Nameplate is the maximum rated output; summer capacity is what the unit can reliably deliver on a hot day, which is typically lower.
Similarly sized plants in Alaska
| Blue Lake Hydro | Hydro | 16 MW |
| Seward (AK) | Other | 16 MW |
| Lake Dorothy Hydroelectric Project | Hydro | 14 MW |
| Bethel | Other | 14 MW |
About this data
From EIA’s inventory of operable generators, May 2026 release. Capacity is nameplate — the maximum rated output of the equipment, not what the plant actually generates over a year, which depends on how often it runs. A 15 MW solar plant and a 15 MW nuclear plant have the same entry here and produce very different amounts of electricity.
“In service since” is the earliest in-service date among the units still listed, so a site rebuilt around newer equipment can read as younger than the site itself. All Alaska power plants · What Alaska actually generates