Question to the Department for Energy Security & Net Zero:

To ask the Secretary of State for Energy Security and Net Zero, what recent estimate she had made of the number of energy efficiency measures that will be delivered through the ECO4 scheme by March 2026.

In the published Impact Assessment for the scheme, the Government estimated that around 800,000 measures would be installed under ECO4 by March 2026.

Since it began in April 2022, ECO4 has delivered 319,800 measures by end November 2023, with around 32,700 measures being installed in November. Statistics are available at: www.gov.uk/government/statistics/household-energy-efficiency-statistics-headline-release-january-2024.