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March 28, 2017 - Results from the 25th Acid Rain Program SO2 allowance auction are now available
January 13, 2017 - A new edition of EPA's eGRID with 2014 data is now available!
On December 29, 2016, EPA provided a notice of data availability for preliminary ozone transport modeling data related to the 2015 ozone NAAQS.
On December 8, 2016, EPA extended the public comment period on its proposed rule to remove Texas from the CSAPR SO2 and annual NOX trading programs. The comment period now ends on January 9, 2017.
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