Mosaic Phosphates Uncle Sam — United States of America

Mosaic Phosphates Uncle Sam is a 26 MW cogeneration power plant in Louisiana, United States of America. It is operated by Mosaic Phosphates Co.. Based on its capacity (estimated), it can supply roughly 33k homes (estimated). It ranks #4387 of 10,884 United States of America power plants by installed capacity. Commissioned in 1995, it is around 31 years old — long-established. Its modelled annual emissions are 24,900 t CO₂/yr (Climate TRACE), equivalent to about 5.8k 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 USA0010198.

Data provenance

Source of the capacity and fuel values:

capacity: Wikidata P2109; fuel: WRI GPPD

In context: how this plant compares

At 26 MW, Mosaic Phosphates Uncle Sam is around 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.

~24,900 t CO₂/yr (modelled) — in everyday terms

This facility's annual emissions are roughly equivalent to:

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

Key facts

Generation trend

75 GWh in 2013 and 8 GWh in 2017 (−89%)

Highest and lowest year

2016: 112 GWh; 2017: 8 GWh

Share of United States of America cogeneration capacity

2.5% of 1,037 MW across 34 plants in this dataset

Age among peers

17 of 34 dated cogeneration plants in United States of America are older

Calculated from the capacity and generation records in this dataset (WRI Global Power Plant Database (CC BY 4.0)).

Reported generation trend

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

Owner

Operated by Mosaic Phosphates Co..

Local climate & thermal context

This cogeneration plant produces electricity and useful heat together for higher fuel efficiency. It sits in a humid subtropical climate (Köppen Cfa) — Northern Hemisphere, latitude 30.0°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 74% 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: 22/100 — 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

This site sits in a corrosive environment (estimated ISO 9223 class C4 — High), with humidity / wetness the leading environmental stress.

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 #17 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.

Nearby power plants

• Burnside Alumina Plant · Gas · 12 MW · Louisiana
• Louisiana Sugar Refining · Gas · 6.7 MW · Louisiana
• Gramercy Holdings LLC · Gas · 85.3 MW · Louisiana
• Shell Chemical · Gas · 80 MW · Louisiana
• Clean Hydrogen Works LA-2 Facility · Gas · 2,740 MW · Louisiana
• Geismar · Gas · 84.1 MW · Louisiana

Location

Coordinates 30.0386, -90.8283 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

Frequently asked questions