George M Sullivan Generation Plant 2
Natural gas power plant · Anchorage County, Alaska
Nameplate capacity
347 MW
Rank in Alaska
#1
of 150 plants
In service since
1979
June 1979
Details
- Primary fuel
- Natural gas
- Technology
- Natural Gas Fired Combustion Turbine
- Operator
- Chugach Electric Assn Inc
- County
- Anchorage County
- Generating units
- 5
- Share of state capacity
- 11.13%
- Rank among natural gas plants in Alaska
- #1 of 13
- EIA plant code
- 6559
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 7 | Natural Gas Fired Combustion Turbine | 103 MW | 103 MW | 1979 | Operating |
| GT8 | Natural Gas Fired Combustion Turbine | 93 MW | 78 MW | 1984 | Standby/Backup: available for service but not normally used |
| 10 | Natural Gas Fired Combined Cycle | 60 MW | 50 MW | 2017 | Operating |
| 9 | Natural Gas Fired Combined Cycle | 60 MW | 50 MW | 2017 | Standby/Backup: available for service but not normally used |
| 11 | Natural Gas Fired Combined Cycle | 31 MW | 29 MW | 2017 | 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
| Beluga | Natural gas | 312 MW |
| Southcentral Power Project | Natural gas | 204 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 347 MW solar plant and a 347 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