Fossil fuels have a negative human impact that goes over and above the climate change they cause:
“One million people a year die prematurely in China from air pollution from energy and industrial sectors,” said Stefan Hirschberg, head of safety analysis at the Paul Scherrer Institute, an engineering research center in Switzerland. More than 10,000 Americans a year die prematurely from the health effects of breathing emissions from coal-burning power plants, according to the Environmental Protection Agency.
Those deaths are another element that can be set against the higher cost per kilowatt-hour of electricity from sources like wind and solar.
A similar estimate on the number of deaths caused by coal in the United States was posted on this site in September 2010.