Upper Power Plant
Bonneville County, Idaho · EIA plant ID 844 · Operator: City of Idaho Falls - (ID)
Nameplate8MWSummer 8 MW
Generators1in service
Net generation45GWh12 mo to Dec 2025
Capacity factor64%hydro units, summer MW
Heat rate—thermal plants only
First online1982
Monthly net generation
EIA-923, all units at the plant. Net of station use; storage can go negative.
FinalPreliminary
Capacity factor by year
Net MWh ÷ (summer MW × hours), hydro units. Each year uses that year's EIA-860 ratings; the hollow dot is the latest 12 months.
Heat rate by year
Electric fuel MMBtu × 1000 ÷ net MWh (Btu/kWh, HHV), fossil units only; CT + CA counted as one combined-cycle block.
Heat rate applies to fuel-burning (thermal) units only.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2001 | 35.1 | 50.1% | — |
| 2002 | 39.2 | 56.0% | — |
| 2003 | 37.3 | 53.2% | — |
| 2004 | 43 | 61.2% | — |
| 2005 | 43.2 | 61.7% | — |
| 2006 | 49.9 | 71.2% | — |
| 2007 | 46.9 | 67.0% | — |
| 2008 | 24.3 | 34.6% | — |
| 2009 | 23.4 | 33.3% | — |
| 2010 | 46 | 65.7% | — |
| 2011 | 48.9 | 69.8% | — |
| 2012 | 58.3 | 83.0% | — |
| 2013 | 46 | 65.6% | — |
| 2014 | 45.8 | 65.3% | — |
| 2015 | 50 | 71.3% | — |
| 2016 | 42.6 | 60.6% | — |
| 2017 | 53.9 | 76.9% | — |
| 2018 | 52.4 | 74.8% | — |
| 2019 | 50.6 | 72.2% | — |
| 2020 | 51.5 | 73.3% | — |
| 2021 | 42.2 | 60.2% | — |
| 2022 | 42.2 | 60.3% | — |
| 2023 | 7 | 10.0% | — |
| 2024 | 44.9 | 63.9% | — |
| 2025 | 44.8 | 63.9% | — |
Generators
EIA-860 (annual) with EIA-860M updates through Sep 2026. EIA-923 reports generation by plant, prime mover and fuel, not by unit, so unit-level output isn't shown.
| Gen ID | Technology | Prime mover | Nameplate MW | Summer MW | Online | Status | Planned retirement | OEM / model |
|---|---|---|---|---|---|---|---|---|
| 4 | Conventional Hydroelectric | HY | 8 | 8 | Sep 1982 | Operating | — | coming soon |
Owner / operator
Operator: City of Idaho Falls - (ID). Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| City of Idaho Falls - (ID) | 100.0% | 8 MW |
Nearby plants
Within 80 km.
| City Power Plant | 8 MW | 6.8 km |
| Lower No 1 | 8 MW | 9.4 km |
| Lower No 2 | 3 MW | 9.4 km |
| Gem State | 23 MW | 15.3 km |
| Goshen Phase II | 125 MW | 19.8 km |
| Meadow Creek Project Company | 120 MW | 20.2 km |