Moving Backwards: EPA Aims to Repeal Greenhouse Gas Emission Standards for Power Sector
By Matthew Allen

On June 11, 2025, the U.S. Environmental Protection Agency (EPA) proposed to repeal greenhouse gas (GHG) emission standards for fossil-fuel-fired power plants. GHG standards act in direct accordance with the Clean Air Act (CAA).[1] The Supreme Court granted EPA this power after it held in Massachusetts v. EPA that the CAA authorizes EPA to regulate GHG emissions.[2] CAA requires standards for emissions of air pollutants from stationary sources like power plants.[3] EPA Administrator Lee Zeldin indicates this proposal would provide more reliable energy supply and drive down costs which would benefit U.S. citizens.[4] Eliminating GHG emission standards would not only violate the CAA, but would be a direct contradiction to what the EPA seeks to protect.

Administrator Zeldin’s reasoning is no more than a showing for public appeal. EPA proposal looks to neglect years of scientific data, research, and positive changes the CAA has helped to promote. Deregulating GHG emissions could create long lasting environmental and public impacts, reversing decades of effort.[5] This proposal leans more toward corporate and production convenience rather than focusing on EPA’s mission of protection and sustainability.[6] Although the proposal has been submitted, EPA ought to look back at its roots and prevent this injustice from continuing.

EPA is looking to cut the red tape burdening energy production for facilities. Actions like this proposal draw concern for quality of public health and future climate issues. Mary Rice and Amruta Nori-Sarma, Professors of Environmental Health at Harvard University School of Public Health addressed concerns on the long-term effects of deregulating GHG emissions.[7] Greenhouse gases like carbon dioxide (CO₂) and other toxic substances released expose harmful pollutants to the public, especially for children and the elderly.[8]

Not only are short-term air pollution effects of concern, so are long-term climate impacts. GHGs are linked to increased temperatures, more frequent and severe wildfires, and severe weather patterns.[9] Emissions from GHGs like CO₂, methane, and nitrous oxide from burning of fossil fuels and other production are the primary drivers of climate change.[10] Like some health professionals, American Public Health Association (APHA) strongly opposes EPA’s decision for these rollbacks.[11] APHA argues “these rules are especially important, as they would bring environmental and climate justice to historically disadvantaged communities, which face the greatest exposure to pollution from the power sector.”[12] Many private and public organizations have joined in opposition to these rollbacks including, U.S. Climate Alliance, Sabin Center, Health Care Without Harm.[13] All of which have expressed how the repeal of these standards can cause significant harm.[14]

Under the CAA, the Administrator shall include  sources that contributes significantly to air pollution resulting in possible endangerment to public health or welfare.[15] In Massachusetts v. EPA, the Court originally only refers to motor vehicles or “moving” sources as a necessary regulated issue.[16] That holding addresses key distinctions that relied upon statutory interpretation of the CAA. Under CAA, a pollutant must reasonably be anticipated to endanger public health or welfare.[17] EPA argues that GHG emissions from fossil-fuel-fired power plants do not contribute to dangerous air pollution.[18] EPA also proposes that it is the responsibility of the agency to prove the emissions are dangerous prior to issuing regulations.[19]

Removing the regulation standards opens the door for power plants to emit anything and everything they want without accountability. EPA estimates this proposal would save over $15 billion on regulatory costs over the course of two decades.[20] Not only does EPA believe GHG emissions play a little part in climate change, the proposal does not address any future public health concerns of these rollbacks.[21] A repeal of emission standards would constitute a clear violation of CAA. [22] New or previously existing facilities would no longer be enforced to regulate their emissions.[23]

EPA’s proposal is based on a new scientific and economic framework that contradicts the Endangerment Finding codified in 2009.[24] The Endangerment Finding states that regulation must be prescribed for any motor vehicle that emits air pollutants. The Endangerment Finding also states that regulations can be set if emissions contribute to the endangerment of public welfare.[25] EPA’s proposal to remove  the Endangerment Finding is supported by the Department of Energy, where multiple scientists challenged the validity of the climate crisis.[26] The scientists claim that models and experience suggest that CO₂ “might be less damaging economically than commonly believed, and excessive mitigation policies could prove more detrimental” to economic and environmental safety.[27] The authors of the Greenhouse Gas Emissions Review exhibit skeptic ideology regarding climate change.[28] An administrative push towards less regulatory restrictions and skepticism of climate change could play a major role on why the EPA is utilizing this report. Regardless, the objective to repeal the Endangerment Finding directly correlates to GHG emissions under CAA. A rollback of these necessary standards could cause legal and environmental uproar.

EPA challenges the established authority under CAA to set emission standards. EPA establishes the standard of performance which creates a standard that reflects the “degree of emission limitation.”[29] Subsequently, this standard represents the best system of emission reduction and monitoring to prevent poor quality of health and environmental impacts. Even with emission standards in place, facilities are still meeting energy requirements.[30] This standard directly correlates with the administrative power to enforce the regulations.[31] EPA’s proposal wishes to reshape the meaning of standard of performance to allow EPA more leeway with emissions regulations.[32] In turn, the administration is attempting to remove current authority established within CAA that authorizes EPA to establish emission standards. EPA’s argument stems from seeking to eliminate regulatory roadblocks that prohibit efficiency.[33] While this action may streamline regulatory process, the proposal creates an open market for facilities to ignore previous standards. GHG emission standards established a sense of responsibility for emitters to protect the environment and public welfare. This proposal could negate years of challenging work and corporate accountability.

CAA stands as the foundational element to authorize EPA to regulate emissions from stationery and mobile sources. This aligns with the protection of public health and welfare.[34] EPA should not look at flawed science or misrepresentations of foundational statutes. EPA should focus on sustainability and not jeopardizing the safety of the community. Courts should continue to act against rash decisions, like this proposal, which deregulate key initiatives instead of protecting our environment.

[1] Repeal of Greenhouse Gas Emissions Standards for Fossil Fuel-Fired Electric Generating Units, 90 Fed. Reg. 25752 (proposed June 17, 2025) (to be codified at 40 C.F.R. pt. 60).

[2] Massachusetts v. EPA, 549 U.S. 497, 521 (2007).

[3] 42 U.S.C. § 7411(a)(3).

[4] EPA, Greenhouse Gas Standards and Guidelines for Fossil Fuel-Fired Power Plants (July 10, 2025), https://www.epa.gov/stationary-sources-air-pollution/greenhouse-gas-standards-and-guidelines-fossil-fuel-fired-power.

[5] Karen Feldscher, Trump Administration Plans to Roll Back EPA Regulations Could Harm Health, Harvard T.H. Chan Sch. of Pub. Health (Sept. 16, 2025), https://hsph.harvard.edu/news/trump-administration-plans-to-roll-back-epa-regulations-could-harm-health/.

[6] EPA, Our Mission and What We Do (Jul. 23, 2025) https://www.epa.gov/aboutepa/our-mission-and-what-we-do.

[7] Feldscher, supra note 5.

[8] Id.

[9] Id.

[10] See Hannah Ritchie et al., CO₂ and Greenhouse Gas Emissions, Our World in Data  https://ourworldindata.org/co2-and-greenhouse-gas-emissions (last visited Sept. 17, 2025)

[11] See Rolling Back EPA Regulations Will Hurt Communities Across the Nation, American Pub. Health Ass’n (Mar 13, 2025), https://www.apha.org/news-and-media/news-releases/apha-news-releases/rolling-back-epa-regulations-will-hurt-communities-across-the-nation.

[12] Id.

[13] See also EPA Power Plant Rollback Sparks Opposition from Health, Faith, Business, State, and Local Leaders, AMERICA IS ALL IN (Aug. 8, 2025), https://www.americaisallin.com/epa-power-plant-rollback-sparks-opposition-health-faith-business-state-and-local-leaders.

[14] Id.

[15] 42 U.S.C § 7411(b)(1)(A).

[16] Massachusetts v. EPA, 549 U.S. 497, 497 (2007).

[17] 42 U.S.C § 7411(b)(1)(A).

[18] Repeal of Greenhouse Gas Emissions Standards for Fossil Fuel-Fired Electric Generating Units, 90 Fed. Reg. 25752 (proposed June 17, 2025) (to be codified at 40 C.F.R. pt. 60).

[19] Id.

[20] Id.

[21] Repeal of Greenhouse Gas Emissions Standards for Fossil Fuel-Fired Electric Generating Units, 90 Fed. Reg. 25752 (proposed June 17, 2025) (to be codified at 40 C.F.R. pt. 60).

[22] 42 U.S.C § 7411.

[23] 42 U.S.C § 7411(d)(1).

[24] Eric Waeckerlin et al., EPA Proposes Rescission of Power Plant GHG Standards Under Clean Air Act Section 111, GreenbergTraurig (June 16, 2025), https://www.gtlaw.com/en/insights/2025/6/epa-proposes-rescission-of-power-plant-ghg-standards-under-clean-air-act-section-111.

[25] 42 U.S.C § 7521(a)(1).

[26] Department of Energy Issues Report Evaluating Impact of Greenhouse Gasses on U.S. Climate, Invites Public Comment, U.S. Dep’t of Energy (July 29, 2025), https://www.energy.gov/articles/department-energy-issues-report-evaluating-impact-greenhouse-gasses-us-climate-invites.

[27] Climate Working Group, A Critical Rev. of Impacts of Greenhouse Gas Emissions on the U.S. Climate U.S. Dep’t. of Energy x, ix (2025).

[28] Id.

[29] 42 U.S.C. § 7411(a)(1).

[30] Id.

[31] 42 U.S.C. § 7413(1).

[32] Repeal of Greenhouse Gas Emissions Standards for Fossil Fuel-Fired Electric Generating Units, 90 Fed. Reg. 25752 (proposed June 17, 2025) (to be codified at 40 C.F.R. pt. 60).

[33] Id.

[34] 42 U.S.C. § 7411(b)(1)(A).