{"schemaVersion":"1.0","id":"how-london-heats","dataset":"epc-bands","title":"How London heats","description":"Four million certificates, and half fall short of band C.","methodology":"Every domestic Energy Performance Certificate lodged for a London address, by band. Band C is the level repeatedly proposed as a minimum for rented homes. This is NOT a survey of London's housing: a certificate is lodged when a home is built, sold or let, so the register is the transacted and rented part of the stock accumulated since 2008, and a house lived in by the same owner since 2005 is absent from it entirely. It also counts certificates rather than homes — a flat sold twice and let once appears three times.","category":"environment","categoryLabel":"Environment","cadence":"monthly","placeholder":false,"landingPage":"https://londongraph.com/g/how-london-heats","markdown":"https://londongraph.com/g/how-london-heats/index.html.md","source":{"name":"MHCLG","url":"https://get-energy-performance-data.communities.gov.uk/","licence":"Open Government Licence v3.0","licenceUrl":"https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/"},"updatedAt":"2026-07-31T17:14:49.144Z","release":{"label":null,"publishedAt":null,"resourceUrl":null,"methodologyUrl":null,"sha256":null},"observations":[{"series":"","buckets":["Band A","Band B","Band C","Band D","Band E","Band F","Band G"],"values":[7238,595224,1465594,1455831,435163,71754,21266],"unit":"certificates","metadata":[{},{},{},{},{},{},{}]}],"areaStatistics":null,"visualizations":[{"id":"overview","label":"Overview","description":"Four million certificates, and half fall short of band C.","url":"https://londongraph.com/g/how-london-heats","renderer":"primary","default":true,"timeControl":"inherit","datasets":[],"transform":null,"controls":null,"metrics":[],"caveat":null},{"id":"distribution","label":"Distribution","description":"Show every published value around the median and quartiles.","url":"https://londongraph.com/g/how-london-heats?view=distribution","renderer":"distribution","default":false,"timeControl":"inherit","datasets":[],"transform":null,"controls":null,"metrics":[],"caveat":null}],"availability":"observations","note":"The release is complete for the measures represented on the graph page."}