Creates a new Weatherization Readiness Program that pays to fix major problems (roofing, structural, plumbing, electrical, and environmental hazards) in low-income homes so those homes can receive existing weatherization upgrades. It changes parts of the Energy Conservation and Production Act to align the new readiness grants with the current Weatherization Assistance Program, sets rules for how funds are allocated and administered, caps administrative costs, and authorizes funding for fiscal years 2026–2030.