CO2 EmissionsNatural gas is recognized as today’s cleanest commercial fossil fuel for power generation. The Rolling Hills Generating Station will continue to use natural gas, incorporating the industry’s best-available emission control technology to meet all applicable local, state and federal environmental standards.

The plant will be fuel efficient. At combined-cycle facilities, the 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 additional steam turbine-generator sets to produce more electricity without using additional fuel.

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


* ROLLING HILLS DATA | Projected Maximum Annual Emission Rate (Based on Conversion of Four Turbines to Combined Cycle with Resulting Facility-wide 1,400 MW Net Power Output). | U.S. and Ohio Plants Data: Environmental Protection Agency, eGRID2012 Version 1.0 (2009 data).