Ever since EPA began considering how BACT analysis would be applied to greenhouse gas emissions, there has been concern that EPA would use its BACT authority to “redefine the source” – with the particular concern that BACT for a coal plant would now be to burn natural gas instead. In Helping Hands Tools v. EPA, the 9th Circuit Court of Appeals this week gave some protection to biomass plants 
from such redefinition of the source. … More