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Big Hollow Energy Center — United States of America

Gas power plant in Missouri, United States of America. Approximate location 38.130869, -90.2628.

GasMissouriUnited States of AmericaOCGTPre Construction

Big Hollow Energy Center is a 800 MW gas power station in Missouri, United States of America. It ranks #786 of 10,884 United States of America power plants by installed capacity. In context, gas supplies about 40.0% of United States of America's electricity; the national grid averages 384 gCO₂/kWh (43.0% low-carbon) (2025).

800MW installed capacity
2028Pre Construction

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

Data status

Known data

FacilityBig Hollow Energy Center GEM-GOGPT
CountryUnited States of America · Missouri GEM-GOGPT
Coordinates38.130869, -90.2628 GEM-GOGPT
FuelGas GEM-GOGPT
MW installed capacity800 MW GEM GOGPT; source record
OwnerUnion Electric Co [100%] GEM-GOGPT
Commissioned2028 GEM-GOGPT
TechnologyOCGT GEM-GOGPT

Calculated from dataset

Capacity rank in country#786 / 10884 calculated
Fuel-specific rank in country#330 / 2165 calculated
Capacity vs country/fuel peers6.60× · 121.2 MW · n=2165 calculated
Climate13.0°C · HDD 2,445 derived from coordinates
Environmental severityC3 · 35/100 derived from coordinates

Not available

GWh reported / yrNot available not in dataset
CO₂ emissionsNot available not in dataset

Known, modelled and calculated values are kept separate. Missing fields are shown as unavailable.

Data provenance

Capacity and fuel are the upstream open-dataset record, not yet matched to a 2026 registry or GEM entry.

capacity: GEM GOGPT; fuel: GEM GOGPT

In context: how this plant compares

At 800 MW, Big Hollow Energy Center is well above the median gas plant in United States of America (121.2 MW). Technically it is described as OCGT. Its current lifecycle status is “Pre Construction” — so it is not yet, or no longer, generating at full output. Gas plants burn natural gas either in open-cycle turbines for fast peaking, or in combined-cycle units that recover exhaust heat in an HRSG to reach roughly 55–62% efficiency — the cleanest-burning fossil option.

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

How it compares & nearby plants

The #330 largest gas power plant of 2165 in United States of America by capacity.

United States of America has 2165 gas power plants in this dataset, together about 789,950 MW of capacity.

Nearby power plants

Location

Coordinates 38.130869, -90.2628 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

Frequently asked questions

What type of power plant is Big Hollow Energy Center?

Big Hollow Energy Center is a 800 MW gas power plant in Missouri, United States of America, Pre Construction 2028.

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