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TransAlta Wyoming Wind

Wind power plant in Wyoming, United States of America. Approximate location 41.2874, -110.5556.

WindWyomingUnited States of America

TransAlta Wyoming Wind is a 144 MW wind power station in Wyoming, United States of America. It is operated by NextEra Energy Operating Services LLC. Based on reported annual generation of 344 GWh, it can supply roughly 98k homes. It ranks #2400 of 10,938 United States of America power plants by installed capacity. Commissioned in 2004, it is around 22 years old — relatively modern. As a non-combustion source, it has no direct CO₂ emissions from generation. In context, wind supplies about 10.3% of United States of America's electricity; the national grid averages 384 gCO₂/kWh (43.0% low-carbon) (2025).

144Source-backed capacity
344GWh reported / yr
98,142homes powered
2004commissioned (~22 yrs)

Plant data: WRI Global Power Plant Database (CC BY 4.0), id USA0056093.

Data status

Known data

FacilityTransAlta Wyoming Wind WRI
CountryUnited States of America · Wyoming WRI
Coordinates41.2874, -110.5556 WRI
FuelWind WRI
MW installed capacity144 MW WRI source record; scope not independently normalised
OwnerNextEra Energy Operating Services LLC WRI
Commissioned2004 WRI
GWh reported / yr344 GWh/yr WRI

Calculated from dataset

Capacity rank in country#2400 of 10938 calculated
Fuel-specific rank in country#320 of 1139 calculated
Capacity vs country/fuel peers2.13× · 68 MW median · 1139 peers calculated
Homes-powered equivalent98,142 calculated from reported generation
Climate5.0°C · HDD 4,733 derived from coordinates
Environmental severityC2 · 28/100 derived from coordinates

Not available

TechnologyNot available not in dataset
GWh reported / yrNot available not in dataset
CO₂ emissionsnot applicable not applicable

Known, modelled and calculated values are kept separate. Missing fields are shown as unavailable.

Data provenance

The capacity and/or fuel fields on this page include a source-backed provenance label from GEM, an official registry, Wikidata, OSM, or a cross-source match.

capacity: Wikidata P2109 nameplate capacity; fuel: WRI source-record fuel

In context: how this plant compares

At 144 MW, TransAlta Wyoming Wind is well above the median wind plant in United States of America (68 MW). Wind turbines convert moving air into electricity; output is variable and site-dependent, and modern turbines deliver some of the lowest-cost new generation on many grids.

Capacity comparison computed from the WRI Global Power Plant Database; fuel-type context is general engineering background.

Reported generation trend

2013: 348 GWh20132014: 403 GWh20142015: 307 GWh20152016: 362 GWh20162017: 364 GWh20172018: 350 GWh20182019: 344 GWh2019403 GWh

Annual generation (GWh), WRI Global Power Plant Database (CC BY 4.0).

Owner

Operated by NextEra Energy Operating Services LLC.

Local climate & thermal context

This wind plant converts the kinetic energy of wind into electricity through turbine rotors. It sits in a warm-summer humid continental climate (Köppen Dfb) — Northern Hemisphere, latitude 41.3°N — which shapes how much energy it can produce and how its output varies through the year.

5.0°Cannual mean temp
4,733heating degree-days (base 18°C)
0cooling degree-days (base 18°C)
2,160 melevation

Monthly mean temperature

J: -6 °CJF: -5 °CFM: -1 °CMA: 4 °CAM: 9 °CMJ: 14 °CJJ: 18 °CJA: 17 °CAS: 12 °CSO: 6 °CON: -1 °CND: -6 °CD18 °C

Heating degree-days here run 93% above the median power plant in this dataset — a proxy for how much extra energy heated equipment must replace through its surfaces in winter.

Climate heat-demand index: 92/100 — this site sits in the top third of the power plants we cover by heating degree-days.

Climate normals: WorldClim 2.1 (1970–2000 monthly normals, 10 arc-min, CC BY 4.0); zone: Köppen-Geiger world climate classification (Kottek et al. 2006, 0.5° grid). Degree-days & heat-demand index computed by PowerAtlas — a modelled heat-demand proxy, not a measured site figure.

Site climate & environmental severity

For a plant’s outdoor hardware — heat-recovery steam generators (HRSG), expansion joints, valves, flanges and their insulation — the local climate sets how fast unprotected steel and coatings degrade. This site sits in a mild atmospheric environment (estimated ISO 9223 class C2 — Low), with humidity / wetness the leading environmental stress.

C2ISO 9223 corrosivity (indicative)
28/100environmental-severity index
23.5°Cseasonal temperature swing
1061 kmdistance to coast

Higher environmental severity is exactly where protective removable insulation pays back most: a sheltered micro-climate slows corrosion, UV and thermal-cycling damage and extends outdoor hardware service life. This is an indicative site-climate context — not a condition assessment of any specific plant or operator.

Indicative estimate via the ISO 9223:2012 informative method (atmospheric corrosivity from temperature, time-of-wetness and airborne salinity), using WorldClim climate normals, the Köppen-Geiger class and coast distance. Indicative, not a measured corrosion rate.

How it compares & nearby plants

The #320 largest wind power plant of 1139 in United States of America by capacity.

United States of America has 1139 wind power plants in this dataset, together about 104,873 MW of capacity.

Nearby power plants

Location

Coordinates 41.2874, -110.5556 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

Frequently asked questions

What type of power plant is TransAlta Wyoming Wind?

TransAlta Wyoming Wind is a 144 MW source-record wind power plant in Wyoming, United States of America, commissioned in 2004.

How much electricity does TransAlta Wyoming Wind generate?

TransAlta Wyoming Wind generates about 344 GWh of electricity per year.

How many homes can TransAlta Wyoming Wind power?

Its output is enough to supply roughly 98,142 homes.

Who operates TransAlta Wyoming Wind?

TransAlta Wyoming Wind is operated by NextEra Energy Operating Services LLC.

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