Non-State and Subnational Action Methodology

Expertise Level
Resource Type
Guidance and Frameworks
Developer or Source
Initiative for Climate Action Transparency (ICAT)

Non-state and subnational actions that contribute to climate change mitigation are becoming increasingly important and need to be explicitly considered by countries when they determine their national contributions.

The Non-State and Subnational Action Guide provides tools for the integration of non-state actors’ activities including how to account for the variety of non-state and subnational actions undertaken by regions, cities, companies and/or sectors; assess the extent to which those actions are a means towards achieving or surpassing national climate targets; and reflect the impact of those actions in national GHG projections, policy development, and target setting.

To support the implementation of the Non-State and Subnational Action Guide, NewClimate Institute, World Resources Institute, and ICAT developed the Climate Action Aggregation Tool (CAAT). The CAAT allows users to (1) better quantify the impact of region, city, and business emissions reduction efforts, (2) evaluate how they overlap with or complement national policies, and (3) determine the impact of combined national and subnational efforts for integration into more holistic target-setting.