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A community platform to accelerate innovation and progress in assessing green economic transitions

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Published
Organization
Green Macroeconomic Modeling Initiative (GMMI)
Enhancing capacity
Capacity-building offers
Citation
Green Macroeconomic Modeling Initiative (2025) A community platform to accelerate innovation and progress in assessing green economic transitions, Contribution to ‘Compendium of Practice from a Global Community of Ministries of Finance and Leading Organizations’, Coalition of Finance Ministers for Climate ActionCopied

The Green Macroeconomic Modeling Initiative (GMMI) is a community platform aiming to accelerate progress in assessing green economic transitions and to ensure up-to-date, fit-for-purpose analytical methods and data are used when providing numbers and advice to governments.

The GMMI brings together leading economic analysis teams from around the world to evaluate specific economic policies and issues, test new approaches, compare results, and rapidly mainstream the most viable approaches for real-world policy contexts. The GMMI is a forum for leading practitioners to learn from one another and build collaborations needed to support policymaking around green economic transitions.

Key Messages

  • The GMMI is following the well-established practice of model intercomparison. Every GMMI study is led by a steering committee of leading economic analysts and experts and linked with key policy constituents to ensure relevance and constant communication between the applied economic analysis community and the policymakers they inform.
  • The inaugural GMMI study (GMMI-1) is focused on better estimating the core macroeconomic metrics used to evaluate and justify green economic policies: jobs, inflation, exports and imports, investments, and interest rates. Participating modeling teams meet regularly to compare methods and results, in order to then improve models and assumptions. GMMI-1 is set to run for two years to late 2026 or early 2027.
  • GMMI-1 is loosely linked to Helsinki Principle 4 of the Coalition of Finance Ministers for Climate Action, on mainstreaming climate into Ministries of Finance. It is coordinated by the Bezos Earth Fund.
Keywords
capacity buildingdatamacroeconomic indicatorsmodelspolicy process