The Apolitical website recognized the Greenest Region Compact as a sustainability force that inspired communities to achieve the SolSmart designation and led to the creation of the GRCorps.

The Caucus is seeking 12 enthusiastic individuals to serve as Greenest Region Corps Members and lead sustainability projects in GRC communities. The expected start date is Oct. 5, 2026.

Please join us for a series of webinars focusing on adapting to impacts of climate change and give us your input as we design a regional climate plan.

This year marked the 50th anniversary of Earth Day on April 22nd. Although we could not celebrate in person, your residents can still take sustainable actions in 2026 to care for the Earth while at home and celebrate the 50th anniversary.

172 Mayors from across the Chicago region have signed a letter requesting the U.S. Census Bureau to extend the completion date of the 2026 Census from August 14 to September 30, 2026. To view please see below.

The Metropolitan Mayors Caucus Environment Committee Chairman, City of Geneva Mayor Kevin Burns, testified to improve energy efficiency building codes at the International Code Council public comment hearings.

CS2 connects municipalities to first community solar project in Illinois

To help local governments obtain an accurate count the Metropolitan Mayors Caucus has formed a 2026 Census Peer Advisory Group of municipal Complete Count Committees. Click the title to learn of Census resources available to communities.