Fresh from Regions4

At every major international event, Regions4 brings new evidence, tools and insights from its member regions to the global stage. This page gathers our latest publications and launches in one place.

New for COP31

Below, discover the publications we are launching and highlighting at the Climate COP31 conference. To learn more about our key messages and our full programme of events, visit our COP31 page.

Regions4 at Climate COP31

RegionsAdapt 2026 Anniversary Report

Our flagship report looks back at ten years of regional climate leadership. It follows the adaptation journeys of 10 regions, draws on a decade of member reporting with CDP, and sets out the next steps to make regional adaptation more deliverable and investable. Launched at our anniversary event on 10 November.

Bridging the Adaptation Gap: Subnational Implementation of National Adaptation Plans

Developed with the support of the European Climate Foundation (ECF), this policy brief looks at what helps, and what holds back, the subnational implementation of National Adaptation Plans (NAPs), drawing on the experiences of São Paulo, Paris Region, Gauteng and Lombardy.

It is accompanied by a three-part case study series, Delivering NAPs on the Ground: Gauteng’s legal mandate, São Paulo’s municipal model and Lombardy’s planning capacity

Case Study Series: Delivering NAPs on the Ground

Arboris: replicable solutions for climate and biodiversity
The next phase of the Regions4 Case Study Database, now a wider ecosystem of climate and biodiversity solutions, designed to help regions share and replicate what works.

We are launching at COP31 a three-part series exploring how subnational governments engage with national adaptation plans, featuring Gauteng’s legal mandate, São Paulo’s municipal model and Lombardy’s planning capacity

A Decade of Leadership Campaign & Anniversary video

Throughout 2026, our social media campaign “10 years, 10 stories of progress” has shared the journeys of member regions, with the support of the Government of Québec. The campaign culminates at COP31 with the world premiere of the RegionsAdapt Anniversary Video at our anniversary event on 10 November. Help us amplify it by sharing the campaign posts and the video on your channels. Premiered on November 10.

FASTR: building finance readiness for regional adaptation

Finance Accelerator for States and Regions (FASTR) is a new initiative that Regions4 is developing with the Under2 Coalition to help regions turn adaptation plans into financed projects.

FASTR is an initiative that combines bankability expertise from the outset with the strategic scale of states and regions, whose
key competences enable them to aggregate opportunities and coordinate investment across urban and rural municipalities.

How you can get involved:

  • Express your interest in joining FASTR
  • Help champion FASTR in your meetings and networks
  • Connect us with potential investors, development banks or other financing partners

RegionsAdapt

Regions4's Flagship Initiative

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Arboris

Explore Aboris' case studies

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