McClure

Oil power plant in California, United States of America. Approximate location 37.6294, -120.9314.

OilCaliforniaUnited States of AmericaOCGTCO₂ modelled

McClure is a 142 MW oil power station in California, United States of America. It is operated by Modesto Irrigation District. Based on reported annual generation of 3 GWh, it can supply roughly 771 homes. It ranks #2407 of 10,938 United States of America power plants by installed capacity. Commissioned in 1980, it is around 46 years old — long-established. Its modelled annual emissions are 150,220 t CO₂/yr (Climate TRACE), equivalent to about 35k cars driven for a year. In context, oil supplies about 0.7% of United States of America's electricity; the national grid averages 384 gCO₂/kWh (43.0% low-carbon) (2025).

142Source-backed capacity
3GWh reported / yr
771homes powered
150,220t CO₂ / yr (Climate TRACE)
1980commissioned (~46 yrs)

Plant data: WRI Global Power Plant Database (CC BY 4.0), id USA0000151.

Data status

Known data

FacilityMcClure WRI
CountryUnited States of America · California WRI
Coordinates37.6294, -120.9314 WRI
FuelOil WRI
MW installed capacity142 MW WRI source record; scope not independently normalised
OwnerModesto Irrigation District WRI
Commissioned1980 WRI
TechnologyOCGT WRI
GWh reported / yr3 GWh/yr WRI

Modelled source data

CO₂ emissions150,220 t CO₂/yr modelled · Climate TRACE

Calculated from dataset

Capacity rank in country#2407 of 10938 calculated
Fuel-specific rank in country#48 of 902 calculated
Capacity vs country/fuel peers19.78× · 7 MW median · 902 peers calculated
Homes-powered equivalent771 calculated from reported generation
Climate16.5°C · HDD 1,269 derived from coordinates
Environmental severityC2 · 32/100 derived from coordinates

Not available

GWh reported / yrNot available not in dataset

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: GEM tracker 2026 (location L100000402099); fuel: WRI source-record fuel

In context: how this plant compares

At 142 MW, McClure is well above the median oil plant in United States of America (7 MW). Technically it is described as OCGT. Oil-fired plants burn heavy fuel oil or diesel, usually as peaking or backup capacity on islands and grids without gas pipelines; high fuel cost keeps their utilisation low.

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

~150,220 t CO₂/yr (modelled) — in everyday terms

This facility's annual emissions are roughly equivalent to:

35kpassenger cars driven for a year
20khomes' yearly energy use
2.5 milliontree seedlings grown 10 years to absorb it

Equivalencies via US EPA Greenhouse Gas Equivalencies; modelled emissions from Climate TRACE.

Reported generation trend

2013: 3 GWh20132014: 3 GWh20142015: 4 GWh20152016: 3 GWh20162017: 4 GWh20172018: 3 GWh20182019: 3 GWh20194 GWh

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

Owner

Operated by Modesto Irrigation District.

Local climate & thermal context

This oil plant burns oil or diesel to drive turbines or reciprocating engines. It sits in a hot-summer Mediterranean climate (Köppen Csa) — Northern Hemisphere, latitude 37.6°N — which shapes how much energy it can produce and how its output varies through the year.

16.5°Cannual mean temp
1,269heating degree-days (base 18°C)
743cooling degree-days (base 18°C)
30 melevation

Monthly mean temperature

J: 8 °CJF: 11 °CFM: 13 °CMA: 16 °CAM: 20 °CMJ: 23 °CJJ: 25 °CJA: 24 °CAS: 22 °CSO: 18 °CON: 12 °CND: 7 °CD25 °C

Heating degree-days here run 48% 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: 30/100 — 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 mild atmospheric environment (estimated ISO 9223 class C2 — Low), with humidity / wetness the leading environmental stress.

C2ISO 9223 corrosivity (indicative)
32/100environmental-severity index
17.7°Cseasonal temperature swing
162 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 #48 largest oil power plant of 902 in United States of America by capacity.

United States of America has 902 oil power plants in this dataset, together about 40,022 MW of capacity.

Nearby power plants

Location

Coordinates 37.6294, -120.9314 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

Frequently asked questions

What type of power plant is McClure?

McClure is a 142 MW source-record oil power plant in California, United States of America, commissioned in 1980.

How much electricity does McClure generate?

McClure generates about 3 GWh of electricity per year.

How many homes can McClure power?

Its output is enough to supply roughly 771 homes.

Who operates McClure?

McClure is operated by Modesto Irrigation District.

How much CO₂ does McClure emit?

McClure has modelled emissions of about 150,220 tonnes of CO₂ per year (Climate TRACE).

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