{
 "id": "energy-efficiency-measures-gb",
 "title": "Energy efficiency measures installed in homes, Great Britain",
 "category": "energy-environment",
 "summary": "Energy efficiency measures installed in homes in Great Britain each month under the Energy Company Obligation since January 2013 and the Great British Insulation Scheme since April 2023, from DESNZ's household energy efficiency statistics; the two schemes are shown apart.",
 "unit": "count",
 "chart": "line",
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 "status": "Provisional; the Great British Insulation Scheme's figures are official statistics, not accredited",
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  "Measures installed in homes under each scheme, by the month of installation, as Ofgem notifies them to DESNZ: a home can receive more than one measure. Recent months rise as late notifications arrive. The schemes are separate and are never added up.",
  "The Great British Insulation Scheme has ended: DESNZ published its final monthly figures in May 2026 and plans one more release for final revisions. Its figures are official statistics; ECO's are accredited."
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  "publisher": "Department for Energy Security and Net Zero",
  "publisher_url": "https://www.gov.uk/government/organisations/department-for-energy-security-and-net-zero",
  "source_page": "https://www.gov.uk/government/collections/household-energy-efficiency-national-statistics",
  "licence": "OGL-3.0",
  "licence_name": "Open Government Licence v3.0",
  "licence_url": "https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/",
  "attribution": "Contains public sector information licensed under the Open Government Licence v3.0.",
  "retrieved_at": "2026-11-09T14:52:16Z",
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  "latest_period": "2026-04",
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  "govuk_page_title": "Household Energy Efficiency Statistics, headline release June 2026",
  "attachment_title": "Headline HEE release tables, June 2026 (Excel)",
  "accreditation": "ECO's: Accredited official statistics: GOV.UK gives the release as national statistics; the Great British Insulation Scheme's: official statistics, as GOV.UK gives its release",
  "gbis_page": "/government/statistics/great-british-insulation-scheme-release-june-2026"
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  "period": "2026-04",
  "note": "in 2,596,044 homes since January 2013; 139,136 Great British Insulation Scheme measures in 100,940 homes to March 2026"
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