One Planet City Challenge

Pathway: Low emission development

One Planet City Challenge (OPCC) aims to mobilise action and support from cities in the global transition towards a climate friendly future, and to stimulate ambitious plans for low carbon development, as well as enhancing the use of sustainable, renewable and energy efficient solutions.

OPCC, earlier called the Earth Hour City Challenge (EHCC), is now a global biennial challenge that is designed to highlight and reward cities that are willing and prepared to make substantial long-term efforts toward sustainability and resilience. The platform also aims at inspiring and supporting cities to become climate-smart and sustainable solution hotspots.

OPCC first began in 2011 in Sweden and then expanded globally in 2012, with ICLEI as the technical partner. Low carbon actions implemented by cities are reported on an internationally recognized carbon reporting platform for cities called “carbonn Climate Registry”, managed by ICLEI – Local Governments for Sustainability. Sustainable actions from participating cities are reviewed by an international jury of experts. After the evaluation, the best city from each country is announced as the National Winner and one city amongst the national winners is declared as the Global Winner.

Vancouver, Cape Town, Seoul, and Paris were awarded the title of Global Earth Hour Capital in 2013, 2014, 2015, and 2016, respectively. In 2017-18, 132 cities representing 23 countries participated in the Challenge. Jakarta, Indonesia was adjudged as the most favourite city based on the citizen voting results of the associated We Love Cities campaign. The Swedish City of Uppsala and Rajkot from India was named global and national winner respectively of One Planet City Challenge 2018. Since the inception of the Challenge in 2011, OPCC has engaged over 400 cities across 5 continents.

Project duration:

2012 till present.

For further information, visit the project website:

  • 2017-2018 – Bengaluru, Coimbatore, Hyderabad, Rajkot, Vadodara, Surat, Pune, Patna, Kochi, Indore and Panaji.
  • 2015-2016 – Cochin, Coimbatore, Dehradun, Gwalior, Kota, Panaji, Pune, Rajkot, Shimla and Surat.
  • 2014-2015 – Ahmedabad, Cochin, Coimbatore, Dehradun, Gandhinagar, Gwalior, Kota, Nashik, Panaji, Pune, Rajkot, Shimla and Thane.
  • 2013-2014 – Pune, Panaji, GHMC (Greater Hyderabad Municipal Corporation), Bhubaneswar, Shimla, Ahmadabad, Cochin and Coimbatore.
  • 2012-2013 – Bhubhaneshwar, Cochin, Coimbatore, Hyderabad, Jaipur and New Delhi.


ICLEI South Asia.


WWF (World Wide Fund)

Kaiser-Friedrich-Str. 7
53113 Bonn
T: +49-228/97 62 99-00
F.+49-228/97 62 99-01 Email:
European Secretariat
Leopoldring 3
79098 Freiburg, Germany
Brussels Office
Av. de Tervuren 35
1040 Bruxelles
Berlin Office
St. Oberholz ROS Team Room 4.02 Rosenthaler Str. 72a 10119 Berlin, Germany
Physical address:
3 Knowledge Park
Century City
Cape Town
South Africa
Postal address:
PO Box 5319
South Africa
Canada Office
401 Richmond St. W
Studio 204
Toronto, Ontario
M5V 3A8, Canada
USA Office
536 Wynkoop St.
Suite 901
Denver, Colorado
USA 80202
Mexico, Central American and Caribbean Secretariat
Eje Central Lazaro Cardenas 13 Building Miguel Abed, Floor 5 Office 506 and 507, Col. Centro, CP 06050 Del. Cuauhtemoc, Mexico City, Mexico
Colombia Office
Área Metropolitana del Valle de Aburrá Carrera 53 N° 40A - 31 Medellín, Antioquia – Colombia
ICLEI Argentina
Boulevard Gálvez, 1150 Planta Alta. Santa Fe, Argentina
South America Secretariat Brazil Project Office
Rua Ibiraçu, 226, Vila Madalena
São Paulo / SP - Brazil
CEP 05451-040
South Asia Secretariat
Ground Floor, NSIC-STP Complex NSIC Bhawan, Okhla Industrial Estate New Delhi – 110020, India
East Asia Secretariat
14/F, Seoul Global Center Building, 38 Jongno, Jongno-gu, Seoul, South Korea (110-110)
Southeast Asia Secretariat
c/o The Manila Observatory Ateneo de Manila University Campus Loyola Heights, Quezon City 1101 Manila, Philippines
ICLEI Indonesia Project Office
Rasuna Office Park III WO. 06-09 Komplek Rasuna Epicentrum Jl. Taman Rasuna Selatan, Kuningan DKI Jakarta, 12960, Indonesia
Oceania Secretariat
Level 1, 200 Little Collins Street Melbourne, Victoria 3000, Australia
Associate Partnership
Associate Partnership
Associate Partnership
Associate Partnership
Associate Partnership
ICLEI membership application
ICLEI membership application
ICLEI membership application
ICLEI membership application
ICLEI membership application
Want to be a model?
Want to be a model?
Want to be a model?
Want to be a model?
Want to be a model?
ICLEI membership online application form
ICLEI membership online application form
ICLEI membership online application form
ICLEI membership online application form
ICLEI membership online application form