Largely, this grant focuses on supporting low-money and gas-weak properties, so eligibility criteria in 2025 are built a lot more inclusive to aid more people benefit and obtain assistance in the government. Eligibility for an ECO4 grant is set by things including money, property kind, and existing energy efficiency measures. https://energyefficiencygrants.blogspot.com/2025/08/uk-gov-energy-grants-eco-grants-uk-for.html