ICAP encompasses ETS from various government levels: regional, national and sub-national (states, provinces, cities).
Launched on October 29, 2007 in Lisbon, Portugal, by leaders of more than 15 governments, the partnership now counts 32 full members and 5 observers.
- Europe
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- EU ETS
- Denmark
- European Commission
- France
- Germany
- Greece
Ireland - Italy
- Netherlands
- Portugal
- Spain
- United Kingdom
- Norway
- Swiss ETS
- Switzerland
- North America
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- Regional Greenhouse Gas Initiative Members (RGGI)
- Maine
- Maryland
- Massachusetts
- New York
- Vermont
- Western Climate Initiative Members (WCI)
- British Columbia
- California
- Manitoba
Nova Scotia - Ontario
- Québec
- Arizona
New Jersey - New Mexico
Oregon - Washington
- Asia Pacific
- Observers