{
  "analysisDate": "2026-10-19",
  "snapshotDate": "2026-10-01",
  "inputs": {
    "epcPackSha256": "dd8070408f0a6220986abd5dd2964f006c60aa394dcc18e6a1568a1551e55842",
    "joinSummaryWorkbookSha256": "3d9b39e280137b8387a4503e8737990313ee3ab6fd20a50675bfd5e202f64e49"
  },
  "epcArchive": {
    "rawCertificates": 47289,
    "recommendationRows": 440237,
    "latestProfiles": 45493,
    "earliestLodgement": "2011-05-03",
    "latestLodgement": "2026-09-30",
    "categories": [
      {
        "category": "Hospitals and care homes",
        "historicalCertificates": 26004,
        "latestProfiles": 24944,
        "eToG": 946,
        "eToGPercent": 3.79,
        "medianFloorAreaM2": 777.0,
        "recommendations": {
          "heatingControls": {
            "profiles": 16173,
            "percent": 64.84
          },
          "weatherCompensation": {
            "profiles": 15038,
            "percent": 60.29
          },
          "windPrompt": {
            "profiles": 15614,
            "percent": 62.6
          },
          "optimumStartStop": {
            "profiles": 12719,
            "percent": 50.99
          },
          "solarPvPrompt": {
            "profiles": 17758,
            "percent": 71.19
          }
        }
      },
      {
        "category": "Primary healthcare buildings",
        "historicalCertificates": 21285,
        "latestProfiles": 20549,
        "eToG": 4590,
        "eToGPercent": 22.34,
        "medianFloorAreaM2": 215.0,
        "recommendations": {
          "heatingControls": {
            "profiles": 13480,
            "percent": 65.6
          },
          "weatherCompensation": {
            "profiles": 12050,
            "percent": 58.64
          },
          "optimumStartStop": {
            "profiles": 11306,
            "percent": 55.02
          },
          "solarPvPrompt": {
            "profiles": 9451,
            "percent": 45.99
          },
          "windPrompt": {
            "profiles": 9573,
            "percent": 46.59
          }
        }
      }
    ],
    "verification": "Recalculated from the supplied certificate/recommendation CSVs. Latest per supplied category + site_key, ordered by lodgement and certificate ID. These are address/UPRN profiles, not verified operational buildings."
  },
  "suppliedCqcJoinSummary": {
    "locationRecords": 30567,
    "locationsWithAnyCandidate": 19640,
    "evidenceRelationships": 66292,
    "directIdentifierLocations": 11375,
    "latestResidentialEpcLocations": 7166,
    "latestResidentialEpcBefore2024": 4877,
    "latestResidentialEpcFrom2024": 2289,
    "before2024Percent": 68.1,
    "verification": "Counts read and reconciled from the supplied summary workbook, not independently reproduced from a row-level CQC/EPC/DEC join. The referenced complete signal register was not included. Identifier agreement does not validate whole-building assessment scope; no named mismatch cases are published."
  },
  "method": [
    "The two EPC classifications are kept separate; hospitals and care homes cannot be separated using that combined label.",
    "The supplied site_key is retained without assuming that it identifies a unique physical building; address variants and units can split or combine a footprint.",
    "Recommendation prevalence counts each selected code theme once per latest certificate. Heating controls uses only EPC-H5, EPC-H7 and EPC-H8; it is not every possible controls recommendation.",
    "Historical recommendations are investigation prompts; they do not establish a present defect, an uncompleted measure, feasibility or savings.",
    "The August care-registration cohort and October matched-summary population use different dates and filters; they are not a growth or change series.",
    "EPC asset ratings and DEC operational ratings are different measures. Their letters are not a numerical performance gap.",
    "No consumption, expenditure, property ownership, installation status or delivered saving is inferred from the certificates or registry matches."
  ],
  "attribution": "Care Circle Network analysis of supplied Energy Performance of Buildings Data extracts and a separately supplied CQC-derived summary. Original public-sector data contains Crown copyright information licensed under the Open Government Licence v3.0; Care Circle calculations are independently described.",
  "licenceUrl": "https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/"
}