Cogeneration power plant in Montana, United States of America. Approximate location 48.2139, -104.3975.
CogenerationMontanaUnited States of AmericaCO₂ modelled
OREG 1 Inc is a 30 MW cogeneration power plant in Montana, United States of America. It is operated by Ormat Nevada Inc. Based on reported annual generation of 156 GWh, it can supply roughly 45k homes. It ranks #4311 of 10,938 United States of America power plants by installed capacity. Commissioned in 2006, it is around 20 years old — relatively modern. Its modelled annual emissions are 28,731 t CO₂/yr (Climate TRACE), equivalent to about 6.7k cars driven for a year. In context, the national grid averages 384 gCO₂/kWh (43.0% low-carbon) (2025).
Plant data: WRI Global Power Plant Database (CC BY 4.0), id USA0056833.
Known, modelled and calculated values are kept separate. Missing fields are shown as unavailable.
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
At 30 MW, OREG 1 Inc is well above the median cogeneration plant in United States of America (26 MW). This facility converts its energy source into electricity for the grid; its capacity, fuel type and location determine its role in the national power mix.
Capacity comparison computed from the WRI Global Power Plant Database; fuel-type context is general engineering background.
This facility's annual emissions are roughly equivalent to:
Equivalencies via US EPA Greenhouse Gas Equivalencies; modelled emissions from Climate TRACE.
Annual generation (GWh), WRI Global Power Plant Database (CC BY 4.0).
Operated by Ormat Nevada Inc. All plants by this company →
This cogeneration plant produces electricity and useful heat together for higher fuel efficiency. It sits in a cold semi-arid steppe climate (Köppen BSk) — Northern Hemisphere, latitude 48.2°N — which shapes how much energy it can produce and how its output varies through the year.
Monthly mean temperature
Heating degree-days here run 81% 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: 90/100 — 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.
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 benign, low-corrosion environment (estimated ISO 9223 class C1 — Very low), with dust abrasion the leading environmental stress.
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.
The #15 largest cogeneration power plant of 34 in United States of America by capacity.
United States of America has 34 cogeneration power plants in this dataset, together about 1,037 MW of capacity.
Coordinates 48.2139, -104.3975 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.
OREG 1 Inc is a 30 MW source-record cogeneration power plant in Montana, United States of America, commissioned in 2006.
OREG 1 Inc generates about 156 GWh of electricity per year.
Its output is enough to supply roughly 44,714 homes.
OREG 1 Inc is operated by Ormat Nevada Inc.
OREG 1 Inc has modelled emissions of about 28,731 tonnes of CO₂ per year (Climate TRACE).
