Swan Lake — Plant Summary
- EIA Plant ID
- 70
- Capacity
- 22.6 MW
- Primary Fuel
- Hydro
- Technology
- Conventional Hydroelectric
- Status
- Operating
- Location
- Ketchikan Gateway, AK
- Operating Since
- 1984
- Generators
- 2
- Operator
- Southeast Alaska Power Agency
- Parent Company
- —
- Annual Generation
- 75,471 MWh
- Capacity Factor
- 38.1%
- Balancing Authority
- No BA
- ISO/RTO
- —
- NERC Region
- —
Swan Lake
OperatingHydro
Ranked #6 of 31 Hydro plants in AK#458 of 1454 nationally
22.6 MW Hydro operating in Ketchikan Gateway, AK — No BA
EIAWD
22.6 MW
Nameplate Capacity
2
Generators
units
Conventional Hydroelectric
Technology
1984
Operating Since
Location
Coordinates
55.6152, -131.3561
County
Ketchikan Gateway, AK
Nearby Plants
- Mahoney Lake HydroelectricHydro9.6 MW · 24.6 km
- Beaver FallsHydro5.4 MW · 27.2 km
- SilvisHydro2.1 MW · 27.9 km
Ownership & Operator
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Southeast Alaska Power Agency | — | — |
| Owner(s) | Southeast Alaska Power Agency | — | — |
| Status | Operating | — | — |
Ownership Chain
No GEM tracker match for this plant — ownership chain unavailable.
About
The Swan Lake hydroelectric plant is located in Ketchikan Gateway County, Alaska. It has a total capacity of 22.6 MW across two generators, and it began operating in 1984. The primary fuel source is water (WAT), and the plant utilizes conventional hydroelectric technology. The operator is Southeast Alaska Power Agency.
Swan Lake's latest annual generation was 75,471 MWh, resulting in a capacity factor of 38.1%. The plant is the sixth-largest of 29 hydroelectric facilities in Alaska, and it ranks 464th out of 1464 nationally. The balancing authority is listed as "No BA," indicating it may operate outside of a formal independent system operator (ISO) or regional transmission organization (RTO) market.
Generated from EIA, GEM, and public data sources
Engineering & Generators
Grid Context
NERC Region
—
Balancing Authority
No BA
Grid Voltage
115 kV
Regulatory Status
NR
Entity Type
Political Subdivision
Sector
Commercial Non-CHP
Generation
9.2K MWh
Latest Month
75.5K MWh
Annual Generation
38.1%
Capacity Factor
Jan 2022 – Dec 2024
Financial Data
No financial data available for this plant.
Pricing & Market Data
This plant is outside organized wholesale electricity markets (ISOs/RTOs). Nodal pricing data is not available.
News & Articles (10)Beta
Hazards·high wind
Wind Advisory: Prince of Wales Island; City and Borough of Wrangell; Ketchikan Gateway Borough; Annette Island
Wind Advisory issued March 21 at 3:54AM AKDT until March 21 at 7:00PM AKDT by NWS Juneau AK
NWS Juneau AK (other)
NWS Juneau AK·5 days ago
General
Anderson: Growing trumpeter swan numbers might be too much of a good thing
They're big. They're beautiful. And there's lots of them. Perhaps too many? Trumpeter swans are now reproducing at a rate no one predicted...
Star Tribune·5 months ago
Industry·corporate
Deep Dive: Enhancing Economic and National Security for Alaska and the Nation
Alaska is home to a wealth of natural resources that fuel its economy. The North Slope contains some of the largest oil and gas fields in...
Alaska (other)
USGS.gov·8 months ago
Grid·outage
Pole fire causes major power outages in Ketchikan, Wrangell, and Petersburg
Communities in southern Southeast Alaska lost power for a few hours Thursday afternoon, due to a failure along the power grid in Ketchikan.
Ketchikan (operator)
KRBD·1 years ago
Last updated 2026-03-21
View all 10 articles