questionText: To ask the Secretary of State for Energy Security and Net Zero, how many homes have had insulation measures carried out under the ECO4 and GBIS schemes since 2022.
answerText: ECO4 started in April 2022. To the end of December 2025, 294,456 insulation measures were installed under ECO4 (including ECO3 Interim and Surplus Actions). This is published in Table 1.6 of Household Energy Efficiency Statistics, headline release: Februa...
heading: Insulation: Housing