The Subnational Government Climate Finance database provides comparable data on subnational public climate-significant expenditure and investment, covering the years from 2001 to 2023, for 33 OECD and EU countries.
This database was built using a pioneer methodology developed in the framework of the project “Financing Climate Action in Regions and Cities”, a joint 2022 project between the OECD and the European Commission Directorate-General for Regional and Urban Policy (DG REGIO).
The methodology relies on a refined approach to the COFOG classification from the System of National Accounts. Using the EU taxonomy for sustainability activities, three first-level COFOG functions (economic affairs and housing and community amenities) and 13 second-level COFOG functions (e.g. transport and energy, environmental protection, waste, water management, housing development) were identified as being “climate-significant”, meaning that expenditure and investment in these areas contributes, to some extent, to climate adaptation or mitigation objectives.
For more information on the methodology used and related work on climate finance tracking, please visit:
Tracking subnational government climate expenditure