
296 Engineering Response to Climate Change
Figure 7.24 also shows that coal-red power plants emit almost twice
as much carbon dioxide per kilowatt hour as natural gas combined-cycle
plants. And of course, there is even a bigger difference in carbon emissions
from coal plants compared to hydroelectric and nuclear plants, which like
renewables, are largely carbon free, even on a lifecycle basis.
Thus, the reduction in carbon emissions that is associated with a given
amount of RET generation clearly depends on which source of power is
Electricity generation technologies powered by renewable resources
*Avoided emissions, no removal of GHGs from the ...