Natural gas is recognized as today’s cleanest commercial fossil fuel for power generation. The Tenaska Westmoreland Generating Station will use the latest emission control technology to meet or be better than all local, state and federal environmental standards. The plant will be fuel efficient. At combined-cycle facilities, energy produced by combustion of natural gas drives turbine-generator sets to produce electricity. The exhaust heat from that process is used to produce steam, which drives a steam turbine-generator to produce more electricity without using additional fuel.


Using natural gas produces the lowest emission rates of all fossil fuels. The chart above compares actual average emission rates of sulfur dioxide (SO2) and nitrogen oxides (NOX) from U.S. coal-fueled generating stations and all fossil-fueled generating stations with estimated maximum emission rates at the Tenaska Westmoreland Generating Station on a pounds/megawatt-hour basis. The chart to the left compares average emission rates of carbon dioxide (CO2) for coal and all U.S. fossil fuel plants with the estimated maximum CO2 emission rates at the proposed Westmoreland County facility.

Tenaska Has Among Lowest Emission Rates in 2015 NRDC Benchmarking Air Emissions Rankings **

Tenaska has demonstrated a commitment to environmental stewardship in the siting, design, construction and operation of its projects. The Natural Resources Defense Council (NRDC), an environmental organization, has listed Tenaska in benchmarking studies since 2004 as having among the lowest fleetwide average emission rates for fossil-fueled power plants in the United States.

Fact Bar B&W

*Tenaska Westmoreland Data: Projected Maximum Emission Rates (Based on 925 MW Net Power Output).
U.S. Plants Data: Environmental Protection Agency, eGRID2012 (2012 data).
**Natural Resources Defense Council Benchmarking Air Emissions Study, 2014.