Skip to main content
Guidance

Household Energy Efficiency statistics methodology note

Methodology note and background quality report accompanying statistical releases on Household Energy Efficiency Statistics.

Updates to this page

From:
Department for Energy Security and Net Zero and Department for Business, Energy & Industrial Strategy
Published:
17 December 2015
Last updated:
19 March 2026
Show all updates

  1. Updated methodology note and background quality report published.

  2. Updated methodology note published.

  3. Updated methodology note and background quality report published.

  4. Updated methodology note and background quality report published.

  5. Published the updated Household Energy Efficiency statistics methodology note and background quality report for March 2025.

  6. Updated methodology note published.

  7. Updated methodology note and background quality report published.

  8. Updated methodology note and background quality report published.

  9. Updated methodology note and background quality report published.

  10. Updated methodology note and background quality report published.

  11. Updated methodology note and background quality report published.

  12. Updated methodology note and background quality report published.

  13. Updated methodology note and background quality report published.

  14. Updated methodology note and background quality report published.

  15. Updated methodology note and background quality report published.

  16. Updated methodology note and background quality report published.

  17. Updated methodology note published.

  18. Updated methodology note and background quality report published.

  19. Updated methodology note and background quality report published.

  20. Updated methodology note and background quality report published.

  21. Updated methodology note and background quality report published.

  22. Updated background quality report published.

  23. Updated methodology note and background quality report published.

  24. Updated methodology note and background quality report published.

  25. Updated methodology note and background quality report published.

  26. Updated methodology note published.

  27. Updated methodology note and background quality report published.

  28. Updated methodology note and background quality report published.

  29. Updated methodology note published.

  30. Updated methodology note and background quality report.

  31. December 2017 methodology note and background quality report published.

  32. August HEE Methodology Note published

  33. Latest methodology note published.

  34. Updated methodology note and background quality report.

  35. Updated methodology note.

  36. Updated methodology note and background quality report.

  37. Updated methodology and background note.

  38. Updated methodology note.

  39. First published.

Applies to England, Scotland and Wales

Documents

Household Energy Efficiency statistics methodology note

PDF, 688 KB, 52 pages

Household Energy Efficiency statistics background quality report

PDF, 250 KB, 9 pages

Details

The methodology note summarises the methodology used to produce estimates of various elements of the Energy Company Obligation (ECO), Domestic Green Deal (GD) and levels of insulation in Great Britain. It is intended to help users understand the assumptions made in the compilation of these statistics and some of the limitations of the data sources.

The background quality report summarises the quality assurance relating to statistics on ECO, GD and insulation levels in Great Britain.

Sign up for emails or print this page

Related content