Held on April 24th, 2025 at the JLL Think Tank in Chicago, IL, forty-five public and private industry leaders convened for the AEG Chicago Stakeholder Challenge: Building Decarbonization + Energy Efficiency. The purpose of this challenge was to: 1.) Agree on a critical obstacle preventing achievement of Chicago’s climate, health and equity goals;  2.) Align on a 90-day sprint and 12-month objective to best address this obstacle; and 3.) Enable stakeholders to create a volunteer Task Force accountable for delivering the agreed solution.