10th largest plant in Alaska · 2910th nationally
Snettisham is a hydroelectric power plant in Alaska with a nameplate capacity of 78.2 MW. It generates roughly 302.1k MWh per year — enough to power about 28,770 average U.S. homes.
Its capacity factor of 44% puts it in the middle range — running steadily but not full-time.
| Plant Name | Snettisham |
|---|---|
| Operator | Alaska Electric Light & Power Co. |
| City | Juneau |
| County | Juneau County |
| State | Alaska |
| ZIP | 99801 |
| Coordinates | 58.14150, -133.73700 |
This plant highlighted in navy-ringed pin; other generators within 25 miles shown as fuel-colored dots.
| ID | Technology | Fuel | Capacity | Status | Online |
|---|---|---|---|---|---|
| 3 | Conventional Hydroelectric | Water | 31.0 MW | Operating | 1990 |
| 1 | Conventional Hydroelectric | Water | 23.6 MW | Operating | 1973 |
| 2 | Conventional Hydroelectric | Water | 23.6 MW | Operating | 1973 |
| Owner | Location | Share |
|---|---|---|
| Alaska Industrial Dev&exp Auth | Anchorage, AK | 10000.0% |
Ownership reported to EIA Form 860. Percentages reflect reported generator-level ownership share, averaged when a plant has multiple generators.
Hydroelectric plants spin turbines using falling or flowing water — typically from a dam-impounded reservoir. They are dispatchable, long-lived, and emission-free at the point of generation, though large reservoirs can disrupt rivers and ecosystems and methane can be released from flooded vegetation.