We’d Prefer to set extra cookies to know how you use GOV.UK, keep in mind your configurations and make improvements to government services. The overall funding pool readily available for the ECO4 scheme is £four billion, and the amount of funding for people will fluctuate dependant upon several things (see https://governmentecogrants.game.blog/2025/08/22/government-eco-grants-100-funded-energy-efficiency-solutions/