April 21, 2024

Affordable Clean Energy (ACE) Rule

EPA Proposes New Emissions Standards for Power Plants
EPA announced proposed rules to reduce CO2 emissions from coal and gas power plants by requiring them to use carbon capture and co-firing of hydrogen.
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Supreme Court Rejects EPA Generation Shifting
The Supreme Court ruled that EPA lacks authority to compel generation shifting to reduce CO2 emissions, citing a lack of “clear congressional authorization.”
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EPA’s Regan Confident in Emission Trends Despite Clean Air Act Challenge
EPA Administrator Michael Regan is confident the electric power sector will continue cutting GHG emissions despite a challenge to the agency’s authority.
Power Plant Emission Rules Up in the Air as Technologies Change
The battle over federal rules controlling power plant emissions is heating up again as EPA prepares to issue revised regulations by the end of the year.
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Supreme Court Hears Arguments on EPA Authority over GHGs
The Supreme Court’s liberals defended EPA’s power to issue “beyond-the-fence-line” rules on power plants in a challenge by the coal industry and 20 states.
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Supreme Court to Hear Challenge on EPA Climate Authority
The Supreme Court agreed to consider challenges to EPA’s authority to regulate greenhouse gas emissions under the Section 111(d) of the Clean Air Act.
DC Circuit Rejects Trump ACE Rule
The D.C. Circuit rejected the Trump administration’s ACE Rule for regulating GHG emissions, saying EPA misconstrued the law.
State Climate Policy Trumps Federal, Public Utilities Say
The EPA's relaxed emission rules for coal-fired generation is almost irrelevant to some of the country's largest public power companies.
EPA Finalizes CPP Replacement
The Trump administration finalized its repeal of the Obama administration’s Clean Power Plan, the Affordable Clean Energy (ACE) rule.
Overheard at the NARUC Winter Policy Summit
Policymakers and industry officials gathered for NARUC Winter Policy Summit, where they discussed coal and nuclear power, among other topics.

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