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Greenhouse Gas Emissions Proposed Rules Clean Air Act

DLA Piper

EPA Proposes to Rescind Landmark Greenhouse Gas Endangerment Finding and Eliminate Mobile Source Emissions Standards for GHGs

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Today, August 1, 2025, the US Environmental Protection Agency (EPA) published a controversial proposed rule that, if finalized, would rescind the agency’s landmark 2009 determination that greenhouse gas (GHG) emissions from...more

Haynes Boone

EPA Proposes Repeal of Legal Foundation for Greenhouse Gas Rules

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The U.S. Environmental Protection Agency (EPA) has proposed a major shift in regulatory policy—to rescind the agency’s 2009 “Endangerment Finding” and to repeal all resulting emission standards for new motor vehicles and...more

Jones Day

EPA Initiates Rulemaking to Eliminate the 2009 GHG Endangerment Finding

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The U.S. Environmental Protection Agency ("EPA") proposes rescission of the 2009 Endangerment Finding, which underpins greenhouse gas regulation under the Clean Air Act....more

Hogan Lovells

EPA proposes reconsidering the 2009 GHG endangerment finding

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On July 30, 2025, the Environmental Protection Agency (EPA) issued a proposed rule to reconsider the 2009 Endangerment Finding that has served as the foundation for EPA's authority to regulate greenhouse gases (GHGs) for...more

Baker Botts L.L.P.

9 Questions About the 2009 Endangerment Finding Reconsideration (Updated with New Information from EPA Announcement on July 29,...

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Over the course of the last 15 years, the U.S. Environmental Protection Agency (EPA) has developed a suite of regulations under the Clean Air Act (CAA) built upon EPA’s finding – originally made in 2009 – that greenhouse gas...more

Tonkon Torp LLP

EPA Poised to Overturn Greenhouse Gas Endangerment Finding

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Current Environmental Protection Agency (EPA) Administrator Lee Zeldin proposed a rule today to rescind 2009 rules that form the basis of greenhouse gas (GHG) emissions limitations, a move that will almost certainly lead to...more

K&L Gates LLP

EPA Plans Reset of GHG and Mercury Rules for Power Plants

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Introduction - Continuing the regulatory whiplash over greenhouse gases (GHG) emissions from power plants, the United States Environmental Protection Agency (EPA) recently proposed repealing the Biden administration’s GHG...more

MG+M The Law Firm

EPA Moves to Repeal Biden–Harris-Era Power Plant Emissions Rules

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On June 11, 2025, the US Environmental Protection Agency, under Administrator Lee Zeldin, proposed repealing two key Biden–Harris-era rules targeting greenhouse gas and air toxic emissions from fossil fuel–fired power plants....more

Jenner & Block

New EPA Proposal Targets Rollback of Power Plant Emissions Rules

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Two weeks ago, the Environmental Protection Agency (EPA) released its proposed repeal of the rules governing greenhouse gas emissions from fossil fuel-fired power plants. Included within the proposal is a new legal...more

Jones Day

EPA Proposes Repeal of Greenhouse Gas Standards for Power Plants

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On June 11, 2025, the U.S. Environmental Protection Agency ("EPA") issued a proposed rule to repeal all greenhouse gas ("GHG") emissions standards for fossil fuel-fired electric generating units ("EGUs") under § 111 of the...more

Goldberg Segalla

New Proposed Rules Would Repeal Certain Regulations on Power Plants, Mercury and Air Toxics Standards

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The Trump administration is proposing two repeals: one on regulations of power plants and the other on certain amendments to the 2024 Mercury and Air Toxics Standards. The administration believes these regulations have...more

Holland & Hart LLP

EPA Proposes Sweeping Repeal of GHG Standards for Fossil Fuel-Fired Power Plants

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Administrator of the U.S. Environmental Protection Agency (EPA) Lee Zeldin on June 11, 2025, announced a proposed rule titled “Repeal of Greenhouse Gas Emissions Standards for Fossil Fuel-Fired Electric Generating Units.” In...more

Morgan Lewis

EPA Proposes Repeal of Greenhouse Gas Standards for Power Plants

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The US Environmental Protection Agency recently issued a proposed rule and accompanying press release announcing its intent to repeal both the 2015 greenhouse gas emissions standards for new fossil fuel-fired power plants...more

Vinson & Elkins LLP

Power Move: EPA Proposes GHG Rules Repeal

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On June 17, 2025, the U.S. Environmental Protection Agency (“EPA”) published a proposed rule that, if finalized, would repeal all greenhouse gas (“GHG”) standards for the power sector. Further, the principles underlying the...more

Latham & Watkins LLP

EPA Proposes Repeal of Power Plant GHG Emissions Standards

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If finalized, the rule would eliminate both Obama- and Biden-era limits on GHG emissions from fossil fuel-fired power plants. On June 11, 2025, the US Environmental Protection Agency (EPA) released a proposed rule under...more

Pillsbury Winthrop Shaw Pittman LLP

EPA Announces Sweeping Deregulatory Agenda: The Complete Set of EPA’s 31 Actions and Affected Environmental Regulations

In what it called “the greatest and most consequential day of deregulation in U.S. history,” the Environmental Protection Agency (EPA) announced its most expansive deregulatory initiative to date on March 12, 2025. Through a...more

Mitchell, Williams, Selig, Gates & Woodyard,...

Project Emissions Accounting/Clean Air Act: National Waste & Recycling Association Comments on U.S. Environmental Protection...

The National Waste & Recycling Association (“NWRA”) submitted July 2nd comments to the United State Environmental Protection Agency (“EPA”) addressing the proposed rule styled: Prevention of Significant Deterioration (PSD) in...more

Mitchell, Williams, Selig, Gates & Woodyard,...

Project Emissions Counting/Clean Air Act: Steel Manufacturers Association Comments on U.S. Environmental Protection Agency...

The Steel Manufacturers Association (“SMA”) submitted July 2nd comments to the United States Environmental Protection Agency (“EPA”) addressing the proposed rule styled: Prevention of Signification Deterioration (PSD) and...more

Beveridge & Diamond PC

EPA Proposes Oil and Gas Sector Methane Fee: Proposed Rule Includes Calculation Procedures for the Inflation Reduction Act’s...

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Key Takeaways - • What Is Happening? On January 12, 2024, the U.S. Environmental Protection Agency (EPA) announced a proposed rule to implement the Inflation Reduction Act’s (IRA) Methane Waste Emissions Charge (WEC)....more

BakerHostetler

Methane Series Part III: Implementation Is Here. EPA Published the Proposed Rule Implementing the First-Ever Direct Tax on Methane...

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We wrote an overview of the methane tax after the Inflation Reduction Act was signed into law in August 2022 and Congress directed the Environmental Protection Agency (EPA) to impose the first-ever direct tax on methane...more

Jones Day

EPA Proposes Regulations to Implement Methane Fee

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The U.S. Environmental Protection Agency ("EPA") has proposed regulations for calculating methane emissions fees required beginning this year under the Inflation Reduction Act ("IRA"). Section 136 of the Clean Air Act (added...more

Williams Mullen

EPA Plant Shutdown Appeal Heats Up

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EPA is attempting to use the Clean Air Act (CAA) to immediately shut down a Louisiana manufacturer that is indisputably in compliance with the emissions limits in its state issued air permit. In its emergency request to a...more

Jones Day

The Agency Strikes Back: EPA Proposes New Emissions Limits for Fossil Fuel-Fired Power Plants

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In Short - The Situation: The Environmental Protection Agency ("EPA") has issued proposed rules to limit carbon dioxide ("CO2") emissions from fossil fuel-fired power plants (the "Proposed Rules")....more

Mitchell, Williams, Selig, Gates & Woodyard,...

Revisions/Confidentiality Determinations for Data Elements/Greenhouse Gas Reporting Rule: U.S. Environmental Protection Agency...

The United States Environmental Protection Agency (“EPA”) published a Supplemental Notice of Proposed Rulemaking (“Proposal”) in the May 22nd Federal Register that would amend certain parts of the Greenhouse Gas Reporting...more

Holland & Hart LLP

GHG Standards for the Power Sector: Is Third Time the Charm or Is It Déjà Vu?

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In the third attempt in less than 10 years, the Environmental Protection Agency issued a proposed rule package (“Proposal”) that would apply strict greenhouse gas emissions standards to the fossil fuel-fired power sector. The...more

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