| Region | Name of initiative | Since |
| New England and Eastern Canadian provinces | New England Governors and Eastern Canadian Premiers Climate Change Action Plan 2001 | 28 August 2001 |
| Washington, Oregon, and California | West Coast Governors’ Global Warming Initiative | November 2004 |
| Western states of Arizona, California, Montana, New Mexico, Oregon, Utah, Washington, and British Columbia, Manitoba, Ontario, and Québec of Canada, with various Indian nations, US and Mexican states, and Canadian provinces as interested observers | WCI, the Western Climate Initiative | 24 April 2007 |
| Mid-western states of Minnesota, Wisconsin, Illinois, Iowa, Michigan, Kansas, and the Canadian province of Manitoba; observers include Indiana, Ohio, South Dakota, and the Canadian province of Ontario | Midwest Governors' Accord, the Midwestern Greenhouse Gas Reduction Accord | 15 November 2007 |
| Arizona and New Mexico | Southwest Climate Change Initiative | 2008 |
| Northeast and Mid-Atlantic states of Maine, New Hampshire, Vermont, Connecticut, New York, New Jersey, Delaware, Massachusetts, Maryland, Rhode Island, with other eastern states and Canadian provinces as observers | Regional Greenhouse Gas Initiative | 2009 |
| Open to all U.S. states, Canadian provinces, and Mexican states, but current participants are Arizona, British Columbia, California, Connecticut, Delaware, Illinois, Maine, Manitoba, Maryland, Massachusetts, Minnesota, Montana, New Jersey, New Mexico, Ontario, Oregon, Québec, Rhode Island, Vermont, Washington | North America 2050 | 2012 |
| City or county | Name of initiative |
| ICLEI campaigns for cities in Australia, Canada, Europe, Japan, Latin America, Mexico, New Zealand, South Africa, South Asia, Southeast Asia, and the United States | CCP, Cities for Climate Protection |
| Baltimore | Baltimore Climate Action Plan |
| Boulder, Colorado | Boulder Climate Action Plan |
| Chicago | Chicago Climate Action Plan |
| Cincinnati | Green Cincinnati Plan |
| Cleveland | Cleveland Climate Action Plan |
| Detroit | Detroit Climate Action Collaborative |
| Kalamazoo | Kalamazoo Climate Action Plan |
| City of Los Angeles, California | L.A.'s Green New Deal Sustainability Plan 2019 |
| County of Los Angeles, California | Our County Regional Sustainability Plan |
| New York City | New York City Panel on Climate Change |
| Oakland, California | City of Oakland Energy and Climate Action Plan |
| Pittsburgh | Pittsburgh Climate Initiative |
| San Francisco | San Francisco Climate Action Plan |
| Seattle | Seattle Climate Action Plan |
