Idaho retired power generators

Records

Retired Idaho power plants

One row per retired generator in Idaho, from the newest Form EIA-860 release's Retired and Canceled sheet.

Source: U.S. Energy Information Administration, Form EIA-860, Annual Electric Generator Report, Idaho retired generators. Published September 2026.

Pages built on this dataset

• Idaho power plants

Publisher

Organization

U.S. Energy Information Administration

Publisher’s dataset

Form EIA-860, Annual Electric Generator Report, Idaho retired generators

File or API used

https://www.eia.gov/electricity/data/eia860/xls/eia8602025.zip

Methodology

https://www.eia.gov/electricity/data/eia860/pdf/instructions.pdf

Coverage

Geography

Idaho

Time coverage

2025

Update frequency

Annual; the final EIA-860 file for a year posts the following September

Published

September 2026

Retrieved

September 10, 2026

License of the records

Public domain. U.S. federal government work.

Rows

10 records

Field reference

One row per retired generator in Idaho, from the newest Form EIA-860 release's Retired and Canceled sheet.

• plant: Plant name as printed on Form EIA-860.
• operator: Utility Name as printed on Form EIA-860; the form's respondent at the time of retirement.
• county: County as printed on Form EIA-860.
• source: Source category mapped from the generator's Technology or Energy Source 1.
• nameplate_mw: Nameplate Capacity (MW) this generator carried before retirement.
• retirement_year: Form EIA-860's Retirement Year.

Caveats

• Latest EIA-860 final release only: the Retired and Canceled sheet accumulates every generator ever marked retired, so retirement_year spans many past years even though the file itself is one snapshot.
• Only Status "RE" (an actual retirement) is kept. Status "CN" (a proposed generator cancelled before it operated) and "IP" (indefinitely postponed) are excluded: neither ever reached commercial operation, so neither is a retirement.
• A generator whose retirement year matches a same-plant natural-gas generator's Operating Year in the same release's Operable sheet would be excluded as a fuel conversion rather than a retirement; checked for every year this dataset's puller covers (2013-2025), Idaho has no such case, so this exclusion has not yet removed a row.
• One row per retired generator, not per plant: a plant retired in stages (Boise River Diversion's three generators, retired together in 2004) lists one row per generator.

How to cite

Understand Idaho, “Form EIA-860, Annual Electric Generator Report, Idaho retired generators”, compiled from U.S. Energy Information Administration, Form EIA-860, Annual Electric Generator Report, Idaho retired generators. Retrieved September 10, 2026. https://understandidaho.com/data/eia-plants-idaho-retired/.

Cite U.S. Energy Information Administration directly for the figures themselves.