2023-03-01-未来能源研究所-用于监管分析的温室气体社会成本的最新估计（英）_7页_186kb

Updated Estimates of the Social Cost of Greenhouse Gases for Usage in Regulatory Analysis Summary

Resources for the Future (RFF) provides comments on the EPA's updated Social Cost of Greenhouse Gases (SC-GHGs). RFF endorses the EPA's report as fully responsive to National Academies of Sciences, Engineering, and Medicine (NASEM) recommendations from their 2017 report.

Key points:

• The EPA report addresses NASEM's four-module approach for SCC estimation.
• GIVE model (developed by RFF and UC Berkeley) is endorsed for its modular and transparent methodology.
• Updated estimates replace the 2021 Interagency Working Group estimates, reflecting best available science.
• Damage functions from independent sources (e.g., Howard-Sterner, Climate Impact Lab) are supported.
• Discounting is updated with a lower central rate (2%) and dynamic discounting based on consumption growth.
• SPC approach is recommended for capital displacement concerns.

Background: RFF's Social Cost of Carbon Initiative, using the GIVE model, produced central SC-CO2 estimate at $185 per tonne in 2020. The EPA report's central 2020 estimates are SC-CO2 $190 per tonne, SC-CH4 $1600 per tonne, and SC-N2O $54,000 per tonne.

The summary concisely captures the endorsement of the EPA's scientific advancements.