Stairs
Salt Lake County, Utah · EIA plant ID 3659 · Operator: PacifiCorp
Nameplate1MWSummer 1 MW
Generators1in service
Net generation4GWh12 mo to Dec 2025
Capacity factor39%hydro units, summer MW
Heat rate—thermal plants only
First online1912
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 | 4.1 | 77.6% | — |
| 2002 | 4.9 | 93.3% | — |
| 2003 | 4 | 75.2% | — |
| 2004 | 5.1 | 97.6% | — |
| 2005 | 4.9 | 92.8% | — |
| 2006 | 6.9 | 130.7% | — |
| 2007 | 4.1 | 39.4% | — |
| 2008 | 5.9 | 56.2% | — |
| 2009 | 6.5 | 61.6% | — |
| 2010 | 5.6 | 53.1% | — |
| 2011 | 7.4 | 70.0% | — |
| 2012 | 4.8 | 45.6% | — |
| 2013 | 3.9 | 37.2% | — |
| 2014 | 4.6 | 44.2% | — |
| 2015 | 3.9 | 37.1% | — |
| 2016 | 4.5 | 43.1% | — |
| 2017 | 5.6 | 53.7% | — |
| 2018 | 3.8 | 35.8% | — |
| 2019 | 5.8 | 54.9% | — |
| 2020 | 4.6 | 43.5% | — |
| 2021 | 3.3 | 31.6% | — |
| 2022 | 3.4 | 32.6% | — |
| 2023 | 4.2 | 39.8% | — |
| 2024 | 3.2 | 30.8% | — |
| 2025 | 4.1 | 39.5% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| 3 | Conventional Hydroelectric | HY | 1 | 1.2 | Jul 1912 | Operating | — | coming soon |
Owner / operator
Operator: PacifiCorp. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| PacifiCorp | 100.0% | 1 MW |
Nearby plants
Within 80 km.
| Granite | 2 MW | 2.5 km |
| Little Cottonwood | 5 MW | 5.9 km |
| Snowbird Power Plant | 7 MW | 9.5 km |
| Murray Turbine | 42 MW | 12.6 km |
| Swire Coca-Cola Draper | 4 MW | 16.9 km |
| HTW Plant 303 COGEN | 7 MW | 17.2 km |