Assuming your Local Authority has issued its assertion of intent, homes may qualify for an ECO4 grant if they fulfill the following: With the ECO4 scheme you can get free energy efficiency updates to your home, like floor insulation or photo voltaic panels, accomplished by accredited installers. Good quality Assurance: https://grantsforinsulationwales.blogspot.com/2025/08/uk-gov-energy-grants-eco-grants-uk-for.html