Answer
What is the ECO4 grant?
ECO4 provides free or subsidised insulation and heating for low-income and benefit-receiving households in Great Britain, funded by energy suppliers.
In more detail
Eligibility is based on income, benefits and your home's energy rating. It targets the least efficient homes first.
Work it out for your home: try our free grant eligibility checker →
2026 figures, based on Energy Saving Trust, Ofgem & gov.uk data · always confirm with a professional survey.