(v) any successor or substantially re-
lated document; and 
(B) any other estimate of the monetized 
damages associated with an incremental in-
crease in greenhouse gas emissions in a given 
year. 
(4) SOCIAL COST OF METHANE.—The term ‘‘so-
cial cost of methane’’ means— 
(A) the estimate of the social cost of meth-
ane described in— 
(i) the document entitled ‘‘Addendum 
to Technical Support Document on Social 
Cost of Carbon for Regulatory Impact 
Analysis under Executive Order 12866: 
Application of the Methodology to Esti-
mate the Social Cost of Methane and the 
Social Cost of Nitrous Oxide’’, published 
by the Interagency Working Group on So-
cial Cost of Greenhouse Gases, United 
States Government, in August 2016; 
(ii) the document entitled ‘‘Technical 
Support Document: Social Cost of Carbon, 
Methane, and Nitrous Oxide Interim Esti-
mates under Executive Order 13990’’, 
published by the Interagency Working 
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Group on Social Cost of Greenhouse 
Gases, United States Government, in Feb-
ruary 2021; 
(iii) the document entitled ‘‘Benefit 
and Cost Analysis for Supplemental Efflu-
ent Limitations Guidelines and Standards 
for the Steam Electric Power Generating 
Point Source Category’’, published by the 
Administrator of the Environmental Pro-
tection agency on April 18, 2024; or 
(iv) any successor or substantially re-
lated document; and 
(B) any other estimate of the monetized 
damages associated with an incremental in-
crease in methane emissions in a given year. 
(5) SOCIAL
COST
OF
NITROUS
OXIDE.—The 
term ‘‘social cost of nitrous oxide’’ means— 
(A) the estimate of the social cost of ni-
trous oxide described in— 
(i) the document entitled ‘‘Addendum 
to Technical Support Document on Social 
Cost of Carbon for Regulatory Impact 
Analysis under Executive Order 12866: 
Application of the Methodology to Esti-
mate the Social Cost of Methane and the 
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Social Cost of Nitrous Oxide’’, published 
by the Interagency Working Group on So-
cial Cost of Greenhouse Gases, United 
States Government, in August 2016; 
(ii) the document entitled ‘‘Technical 
Support Document: Social Cost of Carbon, 
Methane, and Nitrous Oxide Interim Esti-
mates under Executive Order 13990’’, 
published by the Interagency Working 
Group on Social Cost of Greenhouse 
Gases, United States Government, in Feb-
ruary 2021; or 
(iii) any other successor or substan-
tially related document; and 
(B) any other estimate of the monetized 
damages associated with an incremental in-
crease in nitrous oxide emissions in a given 
year. 
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SEC. 3. PROHIBITION ON CONSIDERING THE SOCIAL COST 
OF GREENHOUSE GASES, INCLUDING THE SO-
CIAL COST OF CARBON, THE SOCIAL COST OF 
METHANE, AND THE SOCIAL COST OF NI-
TROUS OXIDE. 
A Federal agency may not consider the social cost 
of carbon, social cost of methane, social cost of nitrous 
oxide, or social cost of greenhouse gases— 
(1) as part of any cost-benefit or cost-effective-
ness analysis required under— 
(A) any law; 
(B) Executive Order 12866 (5 U.S.C. 601 
note; relating to regulatory planning and re-
view); or 
(C) Executive Order 13563 (5 U.S.C. 601 
note; relating to improving regulation and regu-
latory review); 
(2) in any rulemaking; 
(3) in the issuance of any guidance; 
(4) in taking any other agency action; or 
(5) as a justification for any rulemaking, guid-
ance document, or agency action. 
SEC. 4. REPORT TO CONGRESS. 
Not later than 120 days after the date of enactment 
of this Act, the head of each Federal agency shall submit 
to the Committees on Environment and Public Works and 
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Energy and Natural Resources of the Senate and the 
Committees on Energy and Commerce and Natural Re-
sources of the House of Representatives a report describ-
ing the number of proposed and final rulemakings, guid-
ance documents, and agency actions that, since January 
2009, have used the social cost of carbon, the social cost 
of greenhouse gases, the social cost of methane, or the 
social cost of nitrous oxide, including the use of the social 
cost of carbon, the social cost of greenhouse gases, the 
social cost of methane, or the social cost of nitrous oxide 
as part of any cost-benefit analysis required under Execu-
tive Order 12866 (5 U.S.C. 601 note; relating to regu-
latory planning and review) or other relevant authority. 
Æ 
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