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Plant 31 Paper Mill

Biomass power plant in Louisiana, United States of America. Approximate location 32.4868, -92.1496.

BiomassLouisianaUnited States of AmericaCO₂ modelled

Plant 31 Paper Mill is a 84 MW biomass power plant in Louisiana, United States of America. It is operated by Graphic Packaging International. Based on reported annual generation of 614 GWh, it can supply roughly 175k homes. It ranks #3042 of 10,938 United States of America power plants by installed capacity. Commissioned in 1991, it is around 35 years old — long-established. Its modelled annual emissions are 56,962 t CO₂/yr (Climate TRACE), equivalent to about 13k cars driven for a year. In context, biomass supplies about 1.0% of United States of America's electricity; the national grid averages 384 gCO₂/kWh (43.0% low-carbon) (2025).

84Source-backed capacity
614GWh reported / yr
175,342homes powered
56,962t CO₂ / yr (Climate TRACE)
1991commissioned (~35 yrs)

Plant data: WRI Global Power Plant Database (CC BY 4.0), id USA0050028.

Data status

Known data

FacilityPlant 31 Paper Mill WRI
CountryUnited States of America · Louisiana WRI
Coordinates32.4868, -92.1496 WRI
FuelBiomass WRI
MW installed capacity84 MW WRI source record; scope not independently normalised
OwnerGraphic Packaging International WRI
Commissioned1991 WRI
GWh reported / yr614 GWh/yr WRI

Modelled source data

CO₂ emissions56,962 t CO₂/yr modelled · Climate TRACE

Calculated from dataset

Capacity rank in country#3042 of 10938 calculated
Fuel-specific rank in country#24 of 184 calculated
Capacity vs country/fuel peers4.70× · 18 MW median · 184 peers calculated
Homes-powered equivalent175,342 calculated from reported generation
Climate18.1°C · HDD 1,136 derived from coordinates
Environmental severityC3 · 37/100 derived from coordinates

Not available

TechnologyNot available not in dataset
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: Wikidata P2109 nameplate capacity; fuel: WRI source-record fuel

In context: how this plant compares

At 84 MW, Plant 31 Paper Mill is well above the median biomass plant in United States of America (18 MW). Biomass plants burn organic material such as wood, residues or waste-derived fuel to raise steam; they are dispatchable and counted as low-carbon where the feedstock is sustainably sourced.

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

~56,962 t CO₂/yr (modelled) — in everyday terms

This facility's annual emissions are roughly equivalent to:

13kpassenger cars driven for a year
7.4khomes' yearly energy use
949ktree seedlings grown 10 years to absorb it

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

Reported generation trend

2013: 300 GWh20132014: 267 GWh20142016: 566 GWh20162017: 599 GWh20172018: 601 GWh20182019: 614 GWh2019614 GWh

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

Owner

Operated by Graphic Packaging International.

Local climate & thermal context

This biomass plant burns organic material (wood, residues) to raise steam for a turbine. It sits in a humid subtropical climate (Köppen Cfa) — Northern Hemisphere, latitude 32.5°N — which shapes how much energy it can produce and how its output varies through the year.

18.1°Cannual mean temp
1,136heating degree-days (base 18°C)
1,176cooling degree-days (base 18°C)
25 melevation

Monthly mean temperature

J: 7 °CJF: 10 °CFM: 14 °CMA: 18 °CAM: 22 °CMJ: 26 °CJJ: 28 °CJA: 27 °CAS: 24 °CSO: 18 °CON: 13 °CND: 9 °CD28 °C

Heating degree-days here run 54% 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: 28/100 — 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)
37/100environmental-severity index
20.7°Cseasonal temperature swing
327 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 #24 largest biomass power plant of 184 in United States of America by capacity.

United States of America has 184 biomass power plants in this dataset, together about 6,324 MW of capacity.

Nearby power plants

Location

Coordinates 32.4868, -92.1496 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

Frequently asked questions

What type of power plant is Plant 31 Paper Mill?

Plant 31 Paper Mill is a 84 MW source-record biomass power plant in Louisiana, United States of America, commissioned in 1991.

How much electricity does Plant 31 Paper Mill generate?

Plant 31 Paper Mill generates about 614 GWh of electricity per year.

How many homes can Plant 31 Paper Mill power?

Its output is enough to supply roughly 175,342 homes.

Who operates Plant 31 Paper Mill?

Plant 31 Paper Mill is operated by Graphic Packaging International.

How much CO₂ does Plant 31 Paper Mill emit?

Plant 31 Paper Mill has modelled emissions of about 56,962 tonnes of CO₂ per year (Climate TRACE).

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