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Clean Power Plan/Affordable Clean Energy Rule: Timeline of Key Events

By Blair Beasley

In 2014, former President Barack Obama’s Environmental Protection Agency (EPA) proposed the Clean Power Plan to regulate carbon dioxide emissions from existing power plants for the first time. The rule utilized Section 111(d) of the Clean Air Act. President Donald Trump campaigned on repealing the regulation. Under the Trump administration, EPA has since moved forward to carry out that promise.

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  • EPA releases the proposed Clean Power Plan

    EPA releases the proposed Clean Power Plan, a Clean Air Act regulation limiting carbon dioxide emissions from existing power plants.

  • EPA announces the final Clean Power Plan.

    EPA announces the final Clean Power Plan. The rule requires states to submit initial compliance plans in 2016, with final implementation plans due in 2018. Compliance is set to begin in 2022, ramping up toward 2030 emissions goals.

  • The final Clean Power Plan in the Federal Register

    The final Clean Power Plan is published in the Federal Register, kicking off legal challenges.

  • The U.S. Supreme Court grants a stay

    The U.S. Supreme Court grants a stay, halting implementation of the Clean Power Plan as the rule works its way through the courts.

  • U.S. Court of Appeals for the D.C. Circuit en banc hearing

    The U.S. Court of Appeals for the D.C. Circuit holds an en banc hearing on the merits of the Clean Power Plan, stretching over seven hours.

  • Trump signs an executive order

    Trump signs an executive order calling for the EPA to review the Clean Power Plan, and if appropriate, suspend, revise or rescind the rule.

  • The Court of Appeals grants a delay

    The Court of Appeals grants the Trump administration a delay in litigation while the White House reviews the rule and considers its next steps. The court has extended that order twice.

  • EPA issues a Notice of Proposed Rulemaking

    EPA issues a Notice of Proposed Rulemaking (NOPR) to repeal the Clean Power Plan.

  • EPA announces its first deadline extension for the proposed rule

    EPA announces its first deadline extension for the proposed rule (NOPR) to repeal the Clean Power Plan, extending the comment period by 32 days to January 16th.

    EPA holds a two-day public hearing on the proposed repeal in West Virginia. Following the West Virginia listening sessions, EPA announces that it will host additional listening sessions in San Francisco, California; Gillette, Wyoming; and Kansas City, Missouri.

  • EPA releases an Advance Notice of Proposed Rulemaking

    EPA releases an Advance Notice of Proposed Rulemaking (ANPRM) soliciting public comment on what a replacement rule for the Clean Power Plan should look like. The ANPRM is published in the Federal Register on December 28.

  • EPA will hold a public hearing on the proposed rule

    EPA will hold a public hearing on the proposed rule (NOPR) to repeal the Clean Power Plan in Kansas City, Missouri, on February 21.

    The comment deadline for the Advance Notice of Proposed Rulemaking (ANPRM) is February 26.

    EPA will hold a public hearing on the proposed rule (NOPR) to repeal the Clean Power Plan in San Francisco, California, on February 28.

  • EPA will hold a public hearing on the proposed rule

    EPA will hold a public hearing on the proposed rule (NOPR) to repeal the Clean Power Plan in Gillette, Wyoming, on March 27.

  • The comment deadline for proposed rule

    The comment deadline for proposed rule (NOPR) to repeal the Clean Power Plan is April 26.

  • EPA releases the proposed Affordable Clean Energy

    EPA releases the proposed Affordable Clean Energy (ACE) Rule to replace the Clean Power Plan and announces a 60-day public comment period.

  • EPA will hold a public hearing on the proposed Affordable Clean Energy

    EPA will hold a public hearing on the proposed Affordable Clean Energy rule on October, 1 in Chicago, Illinois.

Related Resources

The Clean Power Plan would have regulated carbon dioxide emissions from existing power plants for the first time.

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  • The EPA is Repealing the Clean Power Plan: What Happens Next?

    The Clean Power Plan would have regulated carbon dioxide emissions from existing power plants for the first time.

    Read More

  • The Clean Power Plan Goes to Court: The Arguments

    Legal experts unpacked the arguments presented to the circuit court and offer insights into the judges’ questions and reactions.

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  • Interactive: Modeling the Evolving Power Sector and Impacts of the Final Clean Power Plan

    New analysis of the transitioning electric power sector and projected impacts of the final Clean Power Plan.

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  • Modeling the Evolving Power Sector and Impacts of the Final Clean Power Plan

    State energy policies, falling natural gas prices, and the extension of federal tax incentives for renewables mean many states are on track to comply with the CPP.

    Read More

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