Humpback Creek
Hydro power plant · Valdez Cordova County, Alaska
Nameplate capacity
1.2 MW
Rank in Alaska
#132
of 150 plants
In service since
1991
June 1991
Details
- Primary fuel
- Hydro
- Technology
- Conventional Hydroelectric
- Operator
- Cordova Electric Coop, Inc
- County
- Valdez Cordova County
- Generating units
- 3
- Share of state capacity
- 0.04%
- Rank among hydro plants in Alaska
- #30 of 30
- EIA plant code
- 7042
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 1 | Conventional Hydroelectric | 0.5 MW | 0.4 MW | 1991 | Operating |
| 2 | Conventional Hydroelectric | 0.5 MW | 0.4 MW | 1991 | Operating |
| 3 | Conventional Hydroelectric | 0.2 MW | 0.2 MW | 1991 | 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
| Quinhagak | Other | 1.3 MW |
| Scammon Bay | Other | 1.3 MW |
| Northway | Other | 1.2 MW |
| Shungnak | Other | 1.2 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 1.2 MW solar plant and a 1.2 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