Non-implies-tested Gains that were Formerly available below ECO3 but aren’t made available on ECO4 consist of: With the ECO4 scheme you can get free energy efficiency upgrades to your property, for instance ground insulation or photo voltaic panels, carried out by accredited installers. The ECO4 scheme is controlled by Ofgem, https://scotlandhomeinsulationgrant.blogspot.com/2025/06/take-control-of-your-homes-energy-use.html