29th largest plant in Alaska · 4481st nationally
Swan Lake is a hydroelectric power plant in Alaska with a nameplate capacity of 22.6 MW. It generates roughly 70.6k MWh per year — enough to power about 6,723 average U.S. homes.
Its capacity factor of 36% reflects intermittent or peaking operation.
| Plant Name | Swan Lake |
|---|---|
| Operator | Southeast Alaska Power Agency |
| City | Ketchikan |
| County | Ketchikan Gateway County |
| State | Alaska |
| ZIP | 99901 |
| Coordinates | 55.61521, -131.35611 |
This plant highlighted in navy-ringed pin; other generators within 25 miles shown as fuel-colored dots.
| ID | Technology | Fuel | Capacity | Status | Online |
|---|---|---|---|---|---|
| 1 | Conventional Hydroelectric | Water | 11.3 MW | Operating | 1984 |
| 2 | Conventional Hydroelectric | Water | 11.3 MW | Operating | 1984 |
| Balancing Authority | No Ba |
|---|
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.