Responsible Purchasing Network

Carbon Offsets: Credits & Endnotes


About the Responsible Purchasing Network

The Responsible Purchasing Network (RPN) was founded in 2005 as the first national network of procurement-related professionals dedicated to socially and environmentally responsible purchasing. RPN is a program of the Center for a New American Dream ( and guided by a volunteer Steering Committee of leading procurement stakeholders from government, industry, educational institutions, standards setting organizations, and non-profit advocacy organizations.

About is the leading nonprofit carbon offset and climate solutions organization, making it easy and affordable for individuals, businesses and organizations to reduce and offset their climate impact. Carbon offsets enable individuals and businesses to reduce carbon dioxide emissions they are responsible for in their everyday lives by supporting third party validated renewable energy, energy efficiency and reforestation projects where they are most cost effective. has over 450,000 individual supporters and works with over 1,200 business and nonprofit partners including Discovery, Motorola, Amtrak, Volkswagen, Dell, Virgin America, and Staples.


The Responsible Purchasing Network (RPN) and would like to thank the following people for assisting with the development of this Guide. Their expertise helped to ensure quality and accuracy, though RPN and alone accept responsibility for any errors or omissions. Affiliations listed below were current when input was provided to RPN and and are listed for identification purposes only and do not imply organizational endorsement of this Guide.

Lead authors and project directors: Christina Moretti and Paul Burman; Editors: Chris O’Brien; Ivan Chan; Dave Tilford

Advisors and Reviewers: Brian McFarland,; Jeff Swenerton, Center for Resource Solutions; Jane Lloyd, Markit Financial Information Services; John Kutz, American Carbon Registry



EM- Ecosystem Market Place. “State of the Voluntary Carbon Market.” 2009 Available at:

IFC- IFC International. “Voluntary Carbon Offsets Market Outlook Report” 2008

IPCC- International Panel on Climate Change “The Physical Science Basis, Summary For Policy Makers” 2007. Available at:
Roach, James- “By 2050 Warming to Doom Million Species, Study Says,” National Geographic 2004 Available at

UNEP - United Nations Environment Program, GRID-Arendal Global. Atmospheric Concentration of CO2. 2008. Available at:

USHOR – United States House of Representatives. “The American Clean Energy and Security Act of 2009. 2009. Available at:



Creative Commons License This work by the Responsible Purchasing Network is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 3.0 United States License.



Username (email):
Password (forgot?):

Download this Guide

Feedback on this Guide

Please contact us with corrections, additions, policies, or questions.
Submit Feedback

a project of
New American Dream Logo