{
  "url": "https://openlegislation.uk/eu-regulation-2015-1187/annex-IX/division-1",
  "json_url": "https://openlegislation.uk/eu-regulation-2015-1187/annex-IX/division-1.json",
  "legislation": "eur/2015/1187",
  "legislation_title": "Commission Delegated Regulation (EU) 2015/1187 of 27 April 2015 supplementing Directive 2010/30/EU of the European Parliament and of the Council with regard to energy labelling of solid fuel boilers and packages of a solid fuel boiler, supplementary heaters, temperature controls and solar devices (Text with EEA relevance)",
  "legislation_url": "https://openlegislation.uk/eu-regulation-2015-1187",
  "path": "annex/IX/division/1",
  "kind": "division",
  "number": "1",
  "heading": "The Energy Efficiency Index (EEI) of solid fuel boilers shall be calculated for the preferred fuel and rounded to the nearest integer as:",
  "text": "EEI = ηson × 100 × BLF – F(1) – F(2) × 100 + F(3) × 100\nwhere:\n(a) ηson is the seasonal space heating energy efficiency in active mode, calculated as set out in point 4(b) of Annex VIII;\n(b) BLF is the biomass label factor, which is 1,45 for biomass boilers and 1 for fossil fuel boilers;\n(c) F(1) accounts for a negative contribution to the energy efficiency index due to adjusted contributions of temperature controls; F(1) = 3;\n(d) F(2) accounts for a negative contribution to the energy efficiency index by auxiliary electricity consumption, and is calculated as set out in point 4(c) of Annex VIII;\n(e) F(3) accounts for a positive contribution to the energy efficiency index by the electrical efficiency of solid fuel cogeneration boilers, and is calculated as follows:\nF(3) = 2,5 × ηel,n",
  "extent": "E+W+S+N.I.",
  "status": null,
  "version": "current",
  "annotations": [],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/eur/2015/1187/annex/IX/division/1",
    "retrieved_at": "2026-11-01T14:46:34.701224+00:00"
  },
  "licence": "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. Source: legislation.gov.uk, The National Archives."
}