29th largest plant in Alaska · 4481st nationally
Tyee Lake Hydroelectric Facility is a hydroelectric power plant in Alaska with a nameplate capacity of 22.6 MW. It generates roughly 119.1k MWh per year — enough to power about 11,341 average U.S. homes.
Its capacity factor of 60% puts it in the middle range — running steadily but not full-time.
| Plant Name | Tyee Lake Hydroelectric Facility |
|---|---|
| Operator | Southeast Alaska Power Agency |
| City | Wrangell |
| County | Wrangell Petersburg County |
| State | Alaska |
| ZIP | 99929 |
| Coordinates | 56.21640, -131.50434 |
| ID | Technology | Fuel | Capacity | Status | Online |
|---|---|---|---|---|---|
| UNIT1 | Conventional Hydroelectric | Water | 11.3 MW | Operating | 1983 |
| UNIT2 | Conventional Hydroelectric | Water | 11.3 MW | Operating | 1983 |
| 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.