Emission Reductions Under H.R. 2454, the American Clean Energy and Security Act, 2005-2050

The analysis evaluates the impact of H.R. 2454 (ACESA) on greenhouse gas emissions, finding that proposed pollution caps alone would reduce emissions by 15% below 2005 levels by 2020 and 73% by 2050. When complementary requirements are included, reductions increase to 28% by 2020 and 75% by 2050, with a maximum potential reduction of 81% by 2050 if additional offsets and supplemental reductions are utilized.

• The pollution caps proposed in the American Clean Energy and Security Act (ACESA) are projected to reduce total greenhouse gas emissions by 15% below 2005 levels by 2020 and 73% below 2005 levels by 2050.
• Including all complementary requirements of the ACESA alongside the caps would increase emission reductions to 28% below 2005 levels by 2020 and 75% below 2005 levels by 2050.
• Maximum potential reductions under the ACESA could reach 33% below 2005 levels by 2020 and 81% below 2005 levels by 2050, depending on the use of international offsets and supplemental reductions beyond 2025.
• The 15% reduction by 2020 resulting from the ACESA's proposed pollution caps is lower than the 17% reduction that would have been achieved under the Waxman Markey Discussion Draft.

APA

World Resources Institute (n.d.). Emission Reductions Under H.R. 2454, the American Clean Energy and Security Act, 2005-2050. https://www.wri.org/data/emission-reductions-under-hr-2454-american-clean-energy-and-security-act-2005-2050

Chicago

World Resources Institute. Emission Reductions Under H.R. 2454, the American Clean Energy and Security Act, 2005-2050. n.d. https://www.wri.org/data/emission-reductions-under-hr-2454-american-clean-energy-and-security-act-2005-2050.

Wikipedia

{{cite report |author=World Resources Institute |title=Emission Reductions Under H.R. 2454, the American Clean Energy and Security Act, 2005-2050 |url=https://www.wri.org/data/emission-reductions-under-hr-2454-american-clean-energy-and-security-act-2005-2050 |access-date=17 August 2026 |via=Climate Insights Directory}}

BibTeX

@techreport{worldresourcesinstitutendemission, author = {{World Resources Institute}}, title = {{Emission Reductions Under H.R. 2454, the American Clean Energy and Security Act, 2005-2050}}, institution = {World Resources Institute}, url = {https://www.wri.org/data/emission-reductions-under-hr-2454-american-clean-energy-and-security-act-2005-2050}, urldate = {2026-08-17}, note = {Indexed by Climate Insights Directory} }