34th largest plant in Alaska · 4928th nationally
Green Lake is a hydroelectric power plant in Alaska with a nameplate capacity of 18.6 MW. It generates roughly 41.8k MWh per year — enough to power about 3,978 average U.S. homes.
Its capacity factor of 26% reflects intermittent or peaking operation.
| Plant Name | Green Lake |
|---|---|
| Operator | City & Borough Of Sitka - (Ak) |
| City | Sitka |
| County | Sitka County |
| State | Alaska |
| ZIP | 99835 |
| Coordinates | 56.98628, -135.12275 |
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 | 9.3 MW | Operating | 1982 |
| 2 | Conventional Hydroelectric | Water | 9.3 MW | Operating | 1982 |
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.