Naughton
Lincoln County, Wyoming · EIA plant ID 4162 · Operator: PacifiCorp
Nameplate707MWSummer 604 MW
Generators3in service
Net generation1,989GWh12 mo to Aug 2026
Capacity factor38%gas/coal/oil units, summer MW
Heat rate12,185Btu/kWhfossil units, electric fuel, HHV
First online1963Runs as baseload
The 12-month figures include preliminary EIA-923 months, which EIA revises. Final data runs through Dec 2025.
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), gas/coal/oil 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.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2001 | 5,349.7 | 87.2% | 10,997 |
| 2002 | 5,019.3 | 81.8% | 10,561 |
| 2003 | 4,807.4 | 78.4% | 10,754 |
| 2004 | 5,245.8 | 85.3% | 10,738 |
| 2005 | 5,238.4 | 85.4% | 10,282 |
| 2006 | 4,929.9 | 80.4% | 10,277 |
| 2007 | 5,210.6 | 85.0% | 10,859 |
| 2008 | 5,113.6 | 83.2% | 10,723 |
| 2009 | 4,753.4 | 77.5% | 10,474 |
| 2010 | 5,339.4 | 87.1% | 10,466 |
| 2011 | 5,102.2 | 83.2% | 10,798 |
| 2012 | 5,064.3 | 83.9% | 10,877 |
| 2013 | 5,533.9 | 92.0% | 10,688 |
| 2014 | 4,958.6 | 82.4% | 10,711 |
| 2015 | 4,899.3 | 81.4% | 10,765 |
| 2016 | 4,871.8 | 80.7% | 10,913 |
| 2017 | 4,740.7 | 78.8% | 11,056 |
| 2018 | 4,740.1 | 78.8% | 11,055 |
| 2019 | 2,840.7 | 47.2% | 11,112 |
| 2020 | 2,659 | 50.1% | 11,024 |
| 2021 | 2,596.4 | 49.1% | 11,039 |
| 2022 | 2,456.2 | 46.4% | 11,375 |
| 2023 | 2,766.7 | 52.3% | 11,344 |
| 2024 | 2,778.7 | 52.4% | 11,589 |
| 2025 | 2,281.4 | 43.1% | 11,917 |
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 |
|---|---|---|---|---|---|---|---|---|
| 1 | Conventional Steam Coal | ST | 163.2 | 156 | May 1963 | Operating | — | coming soon |
| 2 | Conventional Steam Coal | ST | 217.6 | 201 | Oct 1968 | Operating | — | coming soon |
| 3 | Natural Gas Steam Turbine | ST | 326.4 | 247 | Oct 1971 | 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% | 707 MW |
Nearby plants
Within 80 km.
| Kemmerer Unit 1 | — | 6.6 km |
| Sage Solar I-III | 58 MW | 38.3 km |
| Shute Creek Facility | 144 MW | 44.2 km |
| TransAlta Wyoming Wind | 144 MW | 52.5 km |
| Mountain Wind Power LLC | 61 MW | 53.2 km |
| Fontenelle | 10 MW | 53.4 km |