Millcreek Power Generation
Natural gas power plant in Washington County, Utah. 80 MW of nameplate capacity across 2 generators, operated by City of St George - (UT).
Also known as EIA plant 56253
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 80 MWNameplate
- Generators
- 2 operatingEIA-860M, August 2026
- Operating since
- April 2006First generator online
- Operator
- City of St George - (UT)EIA operator ID 17874
- Grid
- PACEBalancing authority PACE
- Price nodes
- None linkedNo verified ISO node
- Location
- Washington County, UT37.1121, −113.5166
- EIA plant ID
- 56253EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Millcreek Power Generation produces
Free · EIA-923Net generation, 2025
145 GWh
145,038 MWh, final
Capacity factor, 2025
20.7%
2024: 21.2%
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2015 to 2025
78.2–152.5
GWh a year. Low 2015, high 2022
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | Not reported | Not reported | 0 of 12 |
| 2001 | Not reported | Not reported | 0 of 12 |
| 2002 | Not reported | Not reported | 0 of 12 |
| 2003 | Not reported | Not reported | 0 of 12 |
| 2004 | Not reported | Not reported | 0 of 12 |
| 2005 | Not reported | Not reported | 0 of 12 |
| 2006 | 46,607 | Not reported | 12 of 12 |
| 2007 | 42,980 | Not reported | 12 of 12 |
| 2008 | 31,825 | Not reported | 12 of 12 |
| 2009 | 30,895 | Not reported | 12 of 12 |
| 2010 | 66,873 | Not reported | 12 of 12 |
| 2011 | 64,301 | 9.2% | 12 of 12 |
| 2012 | 90,593 | 12.9% | 12 of 12 |
| 2013 | 88,068 | 12.6% | 12 of 12 |
| 2014 | 77,404 | 11.0% | 12 of 12 |
| 2015 | 78,233 | 11.2% | 12 of 12 |
| 2016 | 131,617 | 18.7% | 12 of 12 |
| 2017 | 96,796 | 13.8% | 12 of 12 |
| 2018 | 111,468 | 15.9% | 12 of 12 |
| 2019 | 78,406 | 11.2% | 12 of 12 |
| 2020 | 103,123 | 14.7% | 12 of 12 |
| 2021 | 127,654 | 18.2% | 12 of 12 |
| 2022 | 152,541 | 21.8% | 12 of 12 |
| 2023 | 118,121 | 16.9% | 12 of 12 |
| 2024 | 148,882 | 21.2% | 12 of 12 |
| 2025 | 145,038 | 20.7% | 12 of 12 |
| 2026 (provisional, partial year) | Not reported | Not reported | 0 of 7 |
* 2026 covers January to July and is provisional. Capacity factor is net generation divided by nameplate capacity times the hours of each reported month.
Power prices and basis
Free accountNo verified ISO price node is linked to this plant, or its price history could not load.
Emissions
Free · EPA CAMPDCO₂, 2025
89,651
US short tons. 2024: 91,617
SO₂, 2025
0
US short tons
NOx, 2025
23
US short tons
CO₂ per MWh, calculated
0.62 t
About 1,236 lb per MWh
2 of 2 EPA units reported CO₂ in 2025 (MC-1, MC-2), matched to EIA plant 56253 through the EPA–EIA crosswalk. The per-MWh rate is EPA CO₂ divided by EIA-923 net generation. The two reporting boundaries can differ.
Water use
Free · EIA-923 cooling, USGSNo EIA cooling-water record for this plant in 2024.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| MC1 | Natural Gas Fired Combustion Turbine | 40.0 | April 2006 |
| MC2 | Natural Gas Fired Combustion Turbine | 40.0 | June 2010 |
Ownership and offtake
ProOwnership and offtake are part of Pro
Owners and their shares, parent companies, and power purchase agreements with their buyers. EIA-860M lists City of St George - (UT) as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
Generation potential vs reported
Monthly potential at seasonal net capability, next to EIA-923 output. Shows how much of the plant's capability was used.
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Power plants near Millcreek Power Generation
More plants operated by City of St George - (UT)
Questions about Millcreek Power Generation
How much power does Millcreek Power Generation produce?
Millcreek Power Generation reported 145,038 MWh (145 GWh) of net generation in 2025, a 20.7% capacity factor on 80 MW of nameplate capacity.
Where is Millcreek Power Generation?
Millcreek Power Generation is in Washington County, Utah, at 37.1121, −113.5166. It is in the PacifiCorp - East balancing area (PACE).
Who operates Millcreek Power Generation?
EIA-860M for August 2026 lists City of St George - (UT) as the operator (EIA operator ID 17874). The operator is not always the owner.
When did Millcreek Power Generation start operating?
Its first generator began operating in April 2006, according to EIA-860M.
Sources
- EIA-860 2025 (final) and EIA-860M August 2026: plant, generators, capacity, operator and location
- EIA-923 monthly net generation, 2000 to July 2026 (2026 provisional)
- EPA CAMPD annual emissions through the EPA–EIA crosswalk, 1995 to 2025
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page