Low-carbon coal plants need more coal for the same power output

“Clean coal” these days usually refers to the idea of generating power from coal while capturing and storing the resulting CO2.  Clean coal does not conventionally refer to cleaner or safer mining practices. In fact, a power plant using carbon capture and sequestration (CCS) will be less efficient than a conventional plant, so it will take more coal (and hence more coal mining) to generate the same amount of electricity. How much more depends on the type of carbon capture technology used.  For a new coal-fired power plant, the best case may need as little as 18% more coal.  The worst case may need as much as 48% more coal. [[Klara, Julianne. “Bituminous Coal and Natural Gas to Electricity Summary Sheets” (PDF) Fossil Energy Power Plant Desk Reference. National Energy Technology Laboratory, May 2007.]]