The Biden administration has enormous climate and carbon management goals, which rightfully include the geologic sequestration of carbon dioxide as a core part of its climate adaptation strategy. The administration, to its credit, has worked with Congress to provide tax credits and billions of dollars of new funding for programs targeting the transportation and sequestration of carbon, but without equal commitment to the regulatory side of the house, the administration’s ambitious goals are at risk.

On the last day of what was already an historic term, the Supreme Court issued another significant decision impacting EPA’s authority under the Clean Air Act to regulate greenhouse gas emissions and address climate change. As EPA embarks on a third attempt at a rule targeting CO2 emissions from existing power plants that will pass legal muster, the question now is how the Court’s decision will affect that new rule.

On April 5, the U.S. Court of Appeals for the D.C. Circuit vacated a Trump-era rule that would have prevented the Environmental Protection Agency (EPA) from setting greenhouse gas (GHG) emissions standards for almost any class of stationary sources, except for fossil fuel-fired electric generating units. The court’s decision, issued at the request of the new Biden EPA, clears the way for new sector-by-sector GHG regulations should the new administration seek to set new GHG standards under Section 111 of the Clean Air Act (CAA).

On November, 4, the U.S. Environmental Protection Agency (EPA) Administrator Andrew Wheeler announced the latest proposal to amend the Coal Combustion Residuals (CCR) rule. Since its original promulgation in April 2015, the CCR rule has been the subject of extensive litigation and numerous rounds of proposed and final revisions. Many of the revisions have sought to address decisions made by the U.S. Court of Appeals for the D.C. Circuit (D.C. Circuit) and concerns raised by both industry and environmental groups. This latest round of proposed changes—entitled “A Holistic Approach to Closure Part A: Deadline to Initiate Closure”—includes the following three categories of proposed amendments to the CCR Rule.