carbonn® Climate Registry

Supporting cities, towns and regions tackling climate change to create transparency, accountability and credibility

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    9% of the world population represented

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    Number of entities registered to the cCR

  • 89


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    Climate Targets

  • 7135

    Mitigation and Adaptation actions

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    Committed GHG emission reductions by 2020

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    Committed GHG emission reductions by 2050

One Unified Reporting System

CDP and ICLEI are partnering to present one unified process for subnational climate action reporting.


  • Experience
    Built on the experience of the two largest subnational reporting platforms
  • Simplicity
    A radically simplified process to report climate action
  • Success
    Local and regional governments can better benchmark their success
  • Guidance
    Local and regional governments will receive data quality services, training and technical assistance

ICLEI and CDP: Introducing streamlined climate reporting

Providing services for communities, protecting citizens and building better places to live, work and do business are the core priorities of local and regional governments everywhere. Climate action and reporting are vital to achieve these aims. The easier the reporting process, the more time governments have to focus on taking action, on bringing benefits to their citizens and local economies. That’s why ICLEI and CDP are partnering to present one unified process for subnational climate action reporting.

Read more

Map of Reporting Local and Regional Governments

  • Local governments (cities, towns)
  • Subnational governments (states, regions)

Multilevel climate action: The path to 1.5 degrees

carbonn® Climate Registry 2017 - 2018 report


"Using data from over a thousand cities, ICLEI's climate experts deliver critical analyses that can assist national governments in tracking subnational climate action and incorporating these efforts into national planning to curb carbon emissions."

Gino Van Begin

Secretary General of ICLEI - Local Governments for Sustainability

The cCR in numbers

Measuring, Reporting and Verification (MRV) of Local Climate Action can contribute to the Nationally Determined Contributions (NDCs).

  • 1066

    Total number of entities registered to the cCR

    View list
  • 330

    Reporting entities participated to Earth Hour City Challenge

    View list
  • 367

    Cities and towns which have indicated the intention to comply with the Compact of Mayors

    View list
  • 7225

    Reported climate actions (5780 mitigation actions 2044 adaptation actions)

    View list

In partnership with:

UCLG united citeis and local Government
R20 Regions of climate action
City of Copenhagen
The State Government of North Rhine-Westphalia
Club de Madrid
Fundacion Pensar
The Climate Group
The Global 100% Renewable Energy Campaign

The cCR is the reporting platform of:

The Global 100% Renewable Energy Campaign
Building Efficiency Accelerator
Climate and Clean Air Coalition
Global Covenant of Mayors for Climate & Energy
Compact of State and Regions
Durban Adaptation Charter
District Energy in Cities
EcoMobility Alliance
Earth Hour City Challenge
Japan carbonn Climate Registry
One Planet City Challenge
The Transformative Actions Program (TAP)
Urban-LEDS Project

Financial support by:

European Union, the state of NRW
Urban LEDS
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