Fairness and Cost-Effectiveness-Based Approaches to Effort-Sharing under the Paris Agreement

The document outlines two methodologies—fairness-based and cost-effectiveness-based—for determining national GHG emission reductions required to meet the Paris Agreement's goals of limiting warming to well below 2°C and ideally 1.5°C. It notes that current commitments, including those of Germany and the EU, are insufficient. The analysis focuses on major emitters including Brazil, Canada, China, the EU, India, Japan, the USA, and specifically Germany, to identify gaps between current Nationally Determined Contributions (NDCs) and the levels of ambition suggested by mitigation potentials or fair shares.

• Current national emission reduction commitments, specifically those of the European Union and Germany, are inadequate to meet the objectives established by the Paris Agreement.
• The report utilizes two distinct methodologies to derive national GHG reduction targets for 2030 and 2050: a fairness-based approach derived from Climate Action Tracker evaluations and a cost-effectiveness approach based on marginal abatement cost curves.
• Comparing fairness and cost-effectiveness approaches helps determine if a country should increase its NDC ambition, especially when the NDC is significantly lower than the country's fair share or mitigation potentials, and highlights the need for international support when low-cost reduction potentials mismatch fair shares.

APA

NewClimate Institute (2019). Fairness and Cost-Effectiveness-Based Approaches to Effort-Sharing under the Paris Agreement. http://www.newclimate.org/resources/publications/fairness-and-cost-effectiveness-based-approaches-to-effort-sharing-under-the

Chicago

NewClimate Institute. Fairness and Cost-Effectiveness-Based Approaches to Effort-Sharing under the Paris Agreement. 2019. http://www.newclimate.org/resources/publications/fairness-and-cost-effectiveness-based-approaches-to-effort-sharing-under-the.

Wikipedia

{{cite report |author=NewClimate Institute |title=Fairness and Cost-Effectiveness-Based Approaches to Effort-Sharing under the Paris Agreement |date=2 December 2019 |url=http://www.newclimate.org/resources/publications/fairness-and-cost-effectiveness-based-approaches-to-effort-sharing-under-the |access-date=17 August 2026 |via=Climate Insights Directory}}

BibTeX

@techreport{newclimateinstitute2019fairness, author = {{NewClimate Institute}}, title = {{Fairness and Cost-Effectiveness-Based Approaches to Effort-Sharing under the Paris Agreement}}, institution = {NewClimate Institute}, year = {2019}, month = dec, url = {http://www.newclimate.org/resources/publications/fairness-and-cost-effectiveness-based-approaches-to-effort-sharing-under-the}, urldate = {2026-08-17}, note = {Indexed by Climate Insights Directory} }