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How the Global Protocol for Community-Scale Greenhouse Gas Emission Inventories (GPC) was developed

The Global Protocol for Community-Scale Greenhouse Gas Emission Inventories (GPC) is the result of a collaborative effort between the GHG Protocol at WRI, C40, and ICLEI. The development of the GPC began in June 2011 as a result of a Memorandum of Understanding between C40 and ICLEI. In 2012, the partnership expanded to include WRI and the Joint Work Program of the Cities Alliance between the World Bank, UNEP, and UN-HABITAT.

An early draft (“Draft GPC Version 0.9”) was released in March 2012 for public comment. It was then updated (“GPC Pilot Version 1.0”) and tested in 35 cities worldwide (see map below). During the same period, six in-person stakeholder consultation workshops were organized in Beijing, Sao Paulo, London, Dar es Salaam, New Delhi, and Jakarta Over 150 city officials, researchers, and practitioners from around the world provided feedback to the GPC Pilot Version 1.0. Based on this feedback, the GPC was further revised and issued for a second public comment in July-August 2014 (“Draft GPC Version 2.0”). The final version of the GPC was published in December 2014. It supersedes all the previous draft and pilot versions.

Date Milestones



Memorandum of Understanding between C40 and ICLEI



Draft GPC Version 0.9 released for public comment



GPC Pilot Version 1.0 released


Pilot testing with 35 cities worldwide



Draft GPC Version 2.0 released for public comment



Final version of the GPC published

Pilot Cities

35 cities pilot tested the GPC in 2013

Stakeholder Workshops

Six in-person stakeholder consultation workshops in 2013-2014
24 Jan
Corporate Footprinting (incl. Scope 3 Assessment) + Executive Buy-in
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Science-Based Targets + Climate Action Plan
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