Regional Development

Financing Climate Action in Regions and Cities






Regions and cities are large contributors to spending and investment for climate mitigation and adaptation. Our team helps subnational governments them to measure and enhance their policy efforts towards achieving climate objectives, and mobilising resources for climate action.



Projects & publications

Ongoing: Tracking and Enhancing Subnational Climate-related Finance for Climate Action

September 2020 - March 2022

This joint European Commission and OECD project builds on the previous study to further refine the methodology for tracking and measuring subnational climate and environment-related spending and investment.

The project has three main streams of work:

  • A literature review of existing tracking initiatives;
  • An online observatory for subnational government climate finance; and finally,
  • Two cases studies (one city, one region) consisting of a green budgetary analysis and the creation of a Green Fiscal Strategy and Action Plan

Access the project brief



Financing Climate Objectives in Cities and Regions to Deliver Sustainable and Inclusive Growth 

September 2019

This study is the first of its kind to explicitly develop a methodology for tracking and measuring climate and environment-related expenditure and investment in cities and regions across the OECD. The results revealed that regions and cities play an important role in financing climate action but more assistance from national governments is needed to mobilise additional public and private sources of funding. The study also highlighted a need for improved data collection and statistical systems to track the alignment of public financial flows with climate objectives, including at the subnational level, as called for in the Paris Agreement.

Access the key findings 

Access the full report



2020 OECD Forum on Green Finance and Investment
6-9 October 2020

As part of the High-level Plenary on Accelerating Green Investment, our team organised and facilitated a session on the role of cities and regions in financing a green and sustainable post-COVID recovery. Bringing together elected officials and experts from development finance institutions and think-tanks, the session identified three key aspects that decision-makers should consider when designing recovery plans:

  • Subnational governments need to be included in the design and implementation of the plans as they are at the forefront of tackling both climate change and the pandemic.
  • Subnational governments requires enhanced technical and advisory assistance, in addition to financial resources, to effectively scale-up their green activities.
  • Governments of all levels need to ensure that recovery plans fully address and integrate social issues to mitigate the potential impacts of the plans on vulnerable populations.

Access the summary of the plenary discussion 

More information on the Forum




Towards green budgeting in Brittany (Vers une budgétisation verte en Bretagne)

24 March, 2021

As part of the two day event entitled "Towards green budgeting in Brittany (Vers une budgétisation verte en Bretagne)", co-organised by IHEST and the Region of Brittany, our team presented on the work of the Paris Collaborative on Green Budgeting and the current state-of-play of subnational green budgeting among OECD and EU countries. The presentation (De l’initiative Paris Collaborative on Green Budgeting à l’approche territoriale) highlighted existing subnational green budgeting initiatives, the challenges that exist in implementing green budgeting, and the benefits of green budgeting in helping subnational government align their fiscal strategies with their climate and environmental goals.


Presentation by Isabelle Chatry, OECD Senior Policy Analyst



Related topics

Regional Development


Regional developmeng & Public investment


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