參與本次計畫的有紐約、拉斯維加斯、紐澳良、丹佛與奧勒岡州的波特蘭等大型城市，此外也有一些小型市鎮，例如愛荷華州的杜布克（Dubuque）、明尼蘇達的聖保羅（Saint Paul）、佛州的西棕櫚灘（West Palm Beach），加州的羅納特公園市（Rhonert Park）等。
「碳揭露計畫」（CDP）將與隸屬於「地方環境行動國際委員會」的永續地方政府計畫（ICLEI-Local Governments for Sustainability）合作，協助各城市進行溫室氣體排放的回報。
ICLEI與加州氣候行動登錄專案（California Climate Action Registry） 共同擬定了一套地方政府運作協定，各城市將遵照實行。這個協定徵詢了全美專業權益相關人士（stakeholder）的建議，針對地方政府運作過程中所產生的排放，指定了幾種溫室氣體，詳細列出相關政策架構、計算方法，以及回報指南。城市會利用CDP的網路回報系統公佈收集到的資料。
Some of the largest U.S. cities will report their greenhouse gas emissions for the first time in a program that will demonstrate to companies, investors and the general public how cities are dealing with the risks and opportunities climate change presents.
Twenty-one cities were announced today, with at least nine others expected to take part in the pilot project.
Some of the participating cities are large, such as New York, Las Vegas, New Orleans, Denver, and Portland, Oregon, while others are smaller such as Dubuque, Iowa; Saint Paul, Minnesota; West Palm Beach, Florida; and Rohnert Park, California.
Each city will assemble comparable carbon emission data within their jurisdiction's operations - fire department, ambulance and police services, municipal buildings, waste transport and other services the cities provide or activities over which they exercise budgetary control.
The Carbon Disclosure Project and ICLEI-Local Governments for Sustainability will help the cities to report their greenhouse gas emissions.
An independent not-for-profit organization founded in 2000, the Carbon Disclosure Project represents some 385 global institutional investors, with a combined asset base of more than $57 trillion. CDP collects key climate change data from more than 3,000 major corporations globally and has assembled the largest corporate greenhouse gas emissions database in the world.
Carbon Disclosure Project chief executive Paul Dickinson said, "Over 70 percent of total global emissions are generated from cities and if you don't measure these emissions, you cannot manage them."
"This is a vital step for city councils who wish to gain a better understanding of their own impact and by improving their understanding of risks and opportunities associated with climate change, best prepare their cities for a carbon constrained world," Dickinson said.
Cities will use the local government operations protocol coauthored by ICLEI and the California Climate Action Registry with input from expert stakeholders across the United States. The protocol details the policy framework, calculation methodologies, and reporting guidance for quantifying greenhouse gas emissions from local government operations.
Then the cities will disclose this data to the Carbon Disclosure Project online reporting system.
"ICLEI's partnership with the Carbon Disclosure Project underscores how crucial standards, quantification methods and voluntary reporting are to local climate action," said Michelle Wyman, executive director of ICLEI USA, from her office in Oakland.
This project provides the opportunity for transparency, and is essential in the emerging national and global policy dialogue as the priorities of local governments to achieve swift and deep reductions are identified and advanced by local government leaders," she said.