carbonn Climate Registry
  • 457
    Reporting participants
    Million people represented
    (That's one-seventh of the global urban population!)
  • 566
    Community commitments
    Government commitments
    Of community commitments
    more ambitious than the Kyoto
    Protocol targets
  • 771
    Government and Community GHG Inventories
    Gigatons of reported CO2e per year
    Percentage of reported emissions emitted by cities with a population of 0.5-5 million inhabitants
  • 3082
    Mitigation Actions
    Adaptation Actions
    US$ 145bn
    worth of investments reported in the cCCR

The carbonn Climate Registry (cCR) is the leading global reporting platform of local climate action. It enables cities and Local Governments to demonstrate their power and potential to reduce climate risks and move towards global low-emissions and climate resilient development through the reporting of energy and climate commitments, greenhouse gas emissions as well as mitigation and adaptation actions.

Strategic name change – now carbonn Climate Registry!

With states, provinces and regions now also able to report in the Registry, it made sense to change the name to carbonn Climate Registry.

This follows the agreement between ICLEI and R20 – Regions of climate action in May 2014 and marks a significant step towards opening up the platform to subnational governments. To reflect this evolution and acknowledge all local and subnational entities using the platform, an upgrade is underway.

As part of this rebranding process, a new logo has been designed and the website URL is now

In the coming months, new functionalities will be introduced to support the users –both visitors and the reporting entities.

Stay tuned and don’t forget to update your bookmarks!

Click here for more information about the partnership with R20

Climate action transparency key to trustworthiness

New carbonn Climate Registry (cCR) report reveals that global voluntary reporting of local climate action triggers trustworthiness, access to finance...

Read more


16. September 2014

EHCC deadline extended until 18 September

After experiencing some technical difficulties over the past days the reporting template of the cCR is now back online. Due to this unforeseeable situation, the deadline to participate in the Earth Hour City Challenge is...[more]

10. September 2014

carbonn Cities Climate Registry Named as the Resilient Communities for America Campaign’s Official Reporting Platform for Local Climate Action

SEPTEMBER 9, 2014 – OAKLAND, CA The Resilient Communities for America (RC4A) Campaign today announced the carbonn Climate Registry (cCR) as the Campaign’s official reporting platform. The carbonn platform will enable...[more]

22. August 2014

EHCC Deadline extended until 15 September!

The deadline for participating in the Earth Hour City Challenge has been moved to September 15 2014. [more]



Webinars Earth Hour City Challenge

Dates and recording available here! Fechas y grabación aquí! Dates et enregistrements ici![more]

Webinars Earth Hour City Challenge 2014-2015

Registration links to official presentation of the EHCC to cities in participating countries[more]

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