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Click on any state to learn about its air-related programs and emission reductions.

What's New

  • April 27, 2014 - Our Power Plant Emission Trends and Emission Tracking Highlights pages have been updated with 2014 data.

  • November 21, 2014 - EPA issued a ministerial rule that aligns the dates in the CSAPR rule text with the revised court-ordered schedule, including 2015 Phase 1 implementation and 2017 Phase 2 implementation. In a separate ministerial action, EPA issued a NODA, as required by CSAPR, that aligns the final CSAPR default allowance allocation years with the revised court-ordered schedule.

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