External wall insulation grants through ECO4 and GBIS fund energy-efficient upgrades for low-income households in solid wall homes, covering up to 100% of costs. These grants reduce energy bills by £400–£540 yearly and cut CO2 emissions, supporting the UK’s net-zero 2050 goal. Apply via TrustMark-registered installers like Warma UK to access free insulation before the 2026 deadline. https://ecoliteenergysolutions.com/services/home-insulation-grant/