Mountain View III

Wind power plant in California, United States of America. Approximate location 33.9055, -116.6089.

WindCaliforniaUnited States of America

Mountain View III is a 22 MW wind power plant in California, United States of America. It is operated by Avangrid Renewables LLC. Based on reported annual generation of 68 GWh, it can supply roughly 19k homes. It ranks #4599 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).

22Source-backed capacity
68GWh reported / yr
19,400homes powered
2004commissioned (~22 yrs)

Plant data: WRI Global Power Plant Database (CC BY 4.0), id USA0056112.

Data status

Known data

FacilityMountain View III WRI
CountryUnited States of America · California WRI
Coordinates33.9055, -116.6089 WRI
FuelWind WRI
MW installed capacity22 MW WRI source record; scope not independently normalised
OwnerAvangrid Renewables LLC WRI
Commissioned2004 WRI
GWh reported / yr68 GWh/yr WRI

Calculated from dataset

Capacity rank in country#4599 of 10938 calculated
Fuel-specific rank in country#763 of 1139 calculated
Capacity vs country/fuel peers0.33× · 68 MW median · 1139 peers calculated
Homes-powered equivalent19,400 calculated from reported generation
Climate21.5°C · HDD 534 derived from coordinates
Environmental severityC3 · 42/100 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.

Capacity provenance

The public capacity above is the current source-record value. A 2026 tracker candidate lists 71 MW for Mountain View wind farm, but it is not used as the public primary value until scope is verified (unit vs operating vs installed/project total).

Capacity claim grade: C_REVIEW_MANUAL - recommended action: manual_review_only - confidence: unknown. This follows a claim-based data model: value + scope + source + confidence, rather than silently overwriting records.

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: GEM tracker 2026 (location L100000906460); fuel: WRI source-record fuel

In context: how this plant compares

At 22 MW, Mountain View III is below 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: 73 GWh20132014: 70 GWh20142015: 71 GWh20152016: 74 GWh20162017: 63 GWh20172018: 69 GWh20182019: 68 GWh201974 GWh

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

Owner

Operated by Avangrid Renewables LLC. All plants by this company →

Local climate & thermal context

This wind plant converts the kinetic energy of wind into electricity through turbine rotors. It sits in a hot-summer Mediterranean climate (Köppen Csa) — Northern Hemisphere, latitude 33.9°N — which shapes how much energy it can produce and how its output varies through the year.

21.5°Cannual mean temp
534heating degree-days (base 18°C)
1,816cooling degree-days (base 18°C)
253 melevation

Monthly mean temperature

J: 12 °CJF: 14 °CFM: 16 °CMA: 20 °CAM: 24 °CMJ: 28 °CJJ: 31 °CJA: 31 °CAS: 28 °CSO: 23 °CON: 16 °CND: 12 °CD31 °C

Heating degree-days here run 78% below 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: 21/100 — this site sits in the bottom 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 moderately corrosive environment (estimated ISO 9223 class C3 — Medium), with humidity / wetness the leading environmental stress.

C3ISO 9223 corrosivity (indicative)
42/100environmental-severity index
18.8°Cseasonal temperature swing
133 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 #763 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 33.9055, -116.6089 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

Frequently asked questions

What type of power plant is Mountain View III?

Mountain View III is a 22 MW source-record wind power plant in California, United States of America, commissioned in 2004.

How much electricity does Mountain View III generate?

Mountain View III generates about 68 GWh of electricity per year.

How many homes can Mountain View III power?

Its output is enough to supply roughly 19,400 homes.

Who operates Mountain View III?

Mountain View III is operated by Avangrid Renewables LLC.

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