The Aluminum Association, American Iron and Steel Institute, American Forest & Paper Association, the American Chemistry Council, the American Wood Council, and Industrial Energy Consumers of America (“Associations”) appreciate the opportunity to submit the following comments on the proposed rule entitled “New Source Performance Standards for Greenhouse Gas Emissions From New, Modified, and Reconstructed Fossil Fuel-Fired Electric Generating Units; Emission Guidelines for Greenhouse Gas Emissions From Existing Fossil Fuel-Fired Electric Generating Units; and Repeal of the Affordable Clean Energy Rule” (“Proposed Rule”).