WWF's One Planet City Challenge (OPCC) is

  • friendly competition to mobilize cities to deliver on the Paris Agreement. 

  • We aim to support and celebrate 100 cities with action plans for keeping the global average rise in temperature to below 1.5 °C. The world yearns for transformational leadership we want to encourage cities to develop needed skills and strategies to achieve this. 

  • OPCC is the largest and longest-running competition of its kind. More than 400 cities on 5 continents have participated with at least one goal to reduce carbon emissions and increase climate resiliency. 

  • Participants have already raised ambitions in global reporting initiatives by reporting more than 5,700 actions with a total of 3.9Gt GHG emissions reduction potential by 2050.  The OPCC’s new, unique, and expert-verified methodology for verifying emissions reductions let participating cities report emissions, goals, and targets on standardized reporting platforms

  • Participants’ data is then assessed and compared to the emission reduction trajectories recommended for their type of city in order to limit global warming to 1.5 °C or below

  • This process guides cities to the most impactful actions they can take to cut emissions and align with 1.5°C target. 

  • Ultimately, the goal is for cities to develop best practices and to be more strategic, efficient, and effective in their climate mitigation and adaptation plans. 

  • The OPCC works in collaboration with city networks such as the Global Covenant of Mayors, ICLEI, C40, and CDP. 


Why cities?

Over half of the world’s inhabitants live in cities, and urbanization marches on. Cities account for 70% of carbon emissions and generate more than 80% of global GDP. In cities, problems tend to multiply, yet they are also important testbeds, and multipliers, of solutions. As centers of both political and corporate power, cities can accelerate the transition to a stable climate.

Whether we are decision makers, engaged citizens, or work in urban design and development, we can all influence positive changes. Our voices and our participation are critical for enabling this change.

OPCC – How it works

  • The city decides to join! If you want your city to accept our challenge, ask your city officials! You have influence, and your voice is important!

  • Let us know! If you don’t have a local WWF contact, send us an email at opcc@wwf.se and we will direct you to the right person.

  • Cities report relevant data on global standardized city-data reporting platforms. WWF offers guidance.

  • Based on the data entered, cities are prescreened and shortlisted.

  • An international jury of urban sustainability experts selects national OPCC winners with the most ambitious and inspiring commitments and actions, based on reported data.

  • All participating cities receive guidance from global experts on big-win impact reductions in line with 1.5 °C.

One Planet City Challenge 2020 - Bigger and Better!

We are proud to announce that this year's One Planet City Challenge saw more entries than ever before.


Cities in over 50 countries have joined WWF's One Planet City Challenge 2020, representing approximately 66% of the global population.
The cities' submissions have now been thoroughly reviewed by WWF and Arup, one of the world's leading global consultancies, and 1-3 finalists per country have now been chosen. These finalists will now be evaluated by the OPCC jury of experts who will make the final selection of national winners, as well as one global winner. 



In 2018, 50 cities across 5 continents—representing over 100 million citizens—participated in the We Love Cities campaign.

Read about the We Love Cities Campaign
EXPRESS YOUR LOVE by voting for the cities at http://welovecities.org  

© Natrot/ Shutter Stock

Contact details

For more information, please contact us at:

Ms. Pham Cam Nhung
Climate & Energy Programme Coordinator, WWF-Viet Nam
Email: nhung.phamcam@wwf.org.vn 
No. 6, lane 18 Nguyen Co Thach, Nam Tu Liem, Hanoi
Website: vietnam.panda.org