U.S. colleges like to stress their green credentials. Many also use some of the dirtiest fuels to power their campuses - and crank out pollution at higher rates than the typical commercial power plant, a Reuters Special Report shows.
A Norfolk Southern train rests near the University of North Carolina's energy generation plant, after delivering coal to the facility, in Chapel Hill, North Carolina, U.S. August 11, 2022. REUTERS/Jonathan Drake/File Photo
The EIA collects information from about 3,000 U.S. power plants each year. It then estimates the total amount of CO2 emissions for each facility based on factors such as how much power it produces, and the types of fuel and combustion equipment used. Dirtier fuels burned by older boilers and turbines result in higher overall emissions.
Reuters calculated the rate of CO2 emissions for each plant - the amount created for each megawatt hour of generation - by taking into account both the electrical energy produced and the heat energy as follows: *We then calculated pounds of pollution per megawatt hour: tons of CO2 emissions x 2,000 divided by total plant megawatt hours.
While these tests don’t measure a school power plant’s total output of NOx pollution, they do reveal how clean or dirty individual boilers and turbines are, and the environmental consequences of operating them. Analysts consider this data a useful way of pinpointing problems: Aging combustion equipment, even units used only occasionally for backup power, can produce an outsized share of a power plant’s NOx emissions.
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