Supply Curves for Using Powder River Basin Coal to Reduce Sulfur Emissions |
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| Authors: | Shreekant B. Malvadkar Dennis Smith Gilbert V. McGurl |
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| Affiliation: | 1. National Energy Technology Laboratory, U.S. Department of Energy , Morgantown , West Virginia , USA shreekant.malvadkar@netl.doe.gov;3. U.S. Department of Energy , Washington , DC , USA;4. National Energy Technology Laboratory, U.S. Department of Energy , Pittsburgh , Pennsylvania , USA |
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| Abstract: | Abstract Supply curves were prepared for coal-fired power plants in the contiguous United States switching to Wyoming's Powder River Basin (PRB) low-sulfur coal. Up to 625 plants, representing ～44% of the nameplate capacity of all coal-fired plants, could switch. If all switched, more than $8.8 billion additional capital would be required and the cost of electricity would increase by up to $5.9 billion per year, depending on levels of plant derating. Coal switching would result in sulfur dioxide (SO2) emissions reduction of 4.5 million t/yr. Increase in cost of electricity would be in the range of 0.31-0.73 cents per kilowatt-hour. Average cost of S emissions reduction could be as high as $1298 per t of SO2. Up to 367 plants, or 59% of selected plants with 32% of 44% nameplate capacity, could have marginal cost in excess of $1000 per t of SO2. Up to 73 plants would appear to benefit from both a lowering of the annual cost and a lowering of SO2 emissions by switching to the PRB coal. |
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