65a67d99__Biopower_in_the_United_States__4
[0] Coal (high rank; bituminous) [1] 11,587-12,875 [2] Not applicable [3] Established infrastructure Reliable Relatively inexpensive [4] 
Limited resource Major source of mercury, SO2, and NOx emissions Main source of U.S. greenhouse gas emissions Generates a tremendous amount of waste ash that likely contains a host of hazardous constituents
Biomass Feedstocks for Biopower in the United States
4