Post Falls
Post Falls is a 15 MW hydroelectric power plant in Kootenai County, Idaho, operated by Avista Corp. EIA-860M lists 6 generating units here. Its units entered service between 1906 and 1980.
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
- 14.5 MW
- 17.5 MW net summer
- Generating units
- 6
- In service
- 1906–1980
- EIA plant ID
- 835
Where it is
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- County
- Kootenai County, Idaho
- Coordinates
- 47.7033, -116.9539
- Balancing authority
- AVA
- Sector
- Electric Utility
Units, technology and status
- Operator of record
- Avista Corp
- Primary energy source
- Hydro
- Technologies
- Conventional Hydroelectric
- Status
- Operating (4) · Out of service and NOT expected to return to service in next calendar year (2)
Post Falls: FAQ
- Where is Post Falls?
- In Kootenai County, Idaho (ID). 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 Post Falls?
- 15 MW of nameplate capacity across 6 units, as of the EIA-860M release for 2026-07.
- Who owns Post Falls?
- EIA-860M names Avista Corp 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 Post Falls LLC?
- Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Avista Corp 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 "Post Falls LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
- Is Post Falls still running?
- EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.