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   Congressional                                                        ______
            GResearch Service
    ~ nforming the Ieg~Isative debate since 19!4





EPA Proposes to Repeal the Clean Power Plan



Linda Tsang
Legislative Attorney

January 4, 2018
UPDATE: On December 28, 2017, the US. Environmental Protection Agency (EPA) published an
Advanced Notice of Proposed Rulemaking (ANPRM) seeking information on a potential replacement to
the Clean Power Plan (CPP) the emissions guidelines for greenhouse gases (GHGs) from existing
power plants that the agency proposed to repeal in October 2017. An ANPRM allows an agency to gather
information for potential rulemaking but does not bind an agency to future action. As explained in the
ANPRM, EPA is considering proposing a rule to replace the CPP and seeks comments on the
(1) roles, responsibilities, and limitations of the federal government, state governments, and regulated
entities in developing and implementing the new GHG emission guidelines; (2) the best system of
emission reduction consistent with EPA s new legal interpretation set forth in the proposed repeal of the
CPP; and (3) approaches to harmonize and streamline the process and applicability of Clean Air Act
permitting for existing power plants regulated under the new emission guidelines. EPA will accept
comments on the ANPRM until February 26, 2018.
This Legal Sidebar post originally appeared November 13, 2017.
On October 10, 2017, the Environmental Protection Agency (EPA) issued a proposal to repeal the Obama
Administration's 2015 rule, Carbon Pollution Emission Guidelines for Existing Stationary Sources:
Electric Utility Generating Units (EGUs) (commonly referred to as the Clean Power Plan (CPP) rule).
(See this CRS report for additional background on the CPP). The CPP has not gone into effect because
the Supreme Court in 2016 stayed the implementation of the rule until the lawsuit challenging its legality
is resolved. Upon its review of the CPP and its 2015 legal justification, EPA has now determined that the
CPP exceeds its statutory authority based on a change in the agency's legal interpretation of Section 111
of the Clean Air Act (CAA). The proposal formally starts a potentially lengthy process to repeal the CPP
and raises questions about whether EPA will replace the CPP with another rule targeting CO2 emissions
from existing power plants and how the repeal will affect existing legal challenges to the CPP. This
Sidebar will explore these and other questions and the next steps in repealing the CPP.
What is the legal basis for EPA's proposed repeal of the CPP?

                                                                Congressional Research Service
                                                                                       7-5700
                                                                                www.crs.gov
                                                                                    LSB10016

CRS Legal Sidebar
Prepared for Members and
Committees of Conaress

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