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EPA/OAR RIN: 2060-AW24 Publication ID: Fall 2024 
Title: Emission Guidelines for GHG Emissions From Existing Fossil Fuel-Fired Combustion Turbine EGUs 
Abstract:

On May 23, 2023, under section 111 of the CAA, the EPA proposed greenhouse gas (GHG) standards and emission guidelines for new and existing fossil fuel-fired electric generating units (EGUs), and repeal of the Affordable Clean Energy (ACE) Rule. As a part of that action, EPA proposed GHG emission guidelines for a subcategory of existing combustion turbine EGUs. On April 24, 2024, the EPA finalized the other components of that action, but did not finalize the emission guidelines for the existing combustion turbine EGUs. EPA is now undertaking a new rulemaking to establish GHG emission guidelines for existing fossil fuel-fired combustion turbine EGUs under CAA section 111(d).

 
Agency: Environmental Protection Agency(EPA)  Priority: Other Significant 
RIN Status: Previously published in the Unified Agenda Agenda Stage of Rulemaking: Proposed Rule Stage 
Major: Yes  Unfunded Mandates: Private Sector 
CFR Citation: 40 CFR 60 subpart UUUUb   
Legal Authority: 42 U.S.C. 7401   
Legal Deadline:  None

Statement of Need: Existing combustion turbine EGUs are a significant source of greenhouse gas emissions. This action will evaluate options to reduce those emissions.

Summary of the Legal Basis: Clean Air Act section 111(d) provides the legal framework for establishing greenhouse gas emission guidelines for existing electric generating units.

Alternatives: The EPA is evaluating several options and will propose and solicit comment on those options.

Anticipated Costs and Benefits: Undetermined.

Risks: Undetermined.

Timetable:
Action Date FR Cite
NPRM  02/00/2025 
Final Rule  To Be Determined 
Regulatory Flexibility Analysis Required: Undetermined  Government Levels Affected: Federal, State 
Federalism: No 
Energy Effects: Statement of Energy Effects planned as required by Executive Order 13211.  Included in the Regulatory Plan: Yes 
RIN Data Printed in the FR: No 
Agency Contact:
Gregory Honda
Environmental Protection Agency
Office of Air and Radiation
109 T.W. Alexander Drive, Mail Code D243-01,
Research Triangle Park, NC 27711
Phone:919 541-2034
Fax:919 541-4991
Email: honda.gregory@epa.gov

Nick Hutson
Environmental Protection Agency
Office of Air and Radiation
109 T.W. Alexander Drive, Mail Code D243-01,
Research Triangle Park, NC 27711
Phone:919 541-2968
Fax:919 541-4991
Email: hutson.nick@epa.gov