Purple Lake
Purple Lake is a 4 MW hydroelectric power plant in Prince of Wales Ketchikan County, Alaska, operated by Metlakatla Power & Light. EIA-860M lists 3 generating units here. Its units entered service between 1956 and 1962.
As of 2026-07 (inventory dated 2026-07-31) · EIA-860M Preliminary Monthly Electric Generator Inventory · eia.gov/…/july_generator2026.xlsx · eia.gov/…/eia860m
- Nameplate capacity
- 3.9 MW
- 3.9 MW net summer
- Generating units
- 3
- In service
- 1956–1962
- EIA plant ID
- 6302
Where it is
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- County
- Prince of Wales Ketchikan County, Alaska
- Coordinates
- 55.0913, -131.545
- Balancing authority
- Not reported
- Sector
- Electric Utility
Units, technology and status
- Operator of record
- Metlakatla Power & Light
- Primary energy source
- Hydro
- Technologies
- Conventional Hydroelectric
- Status
- Operating
Purple Lake: FAQ
- Where is Purple Lake?
- In Prince of Wales Ketchikan County, Alaska (AK). The map on this page is placed at the coordinates EIA files for the plant, which locate the site rather than any individual unit.
- How big is Purple Lake?
- 4 MW of nameplate capacity across 3 units, as of the EIA-860M release for 2026-07.
- Who owns Purple Lake?
- EIA-860M names Metlakatla Power & Light as the reporting entity. That is the operator of record on the survey, which is not always the ultimate owner.
- Is this the same as Purple Lake LLC?
- Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Metlakatla Power & Light here — not the project company that holds the asset. Project companies are commonly registered as an LLC carrying the plant's name, so a search for "Purple Lake LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
- Is Purple Lake still running?
- EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.