{
  "url": "https://openlegislation.uk/draft-domestic-renewable-heat-incentive-scheme-amendment-regulations-2017/regulation-9",
  "json_url": "https://openlegislation.uk/draft-domestic-renewable-heat-incentive-scheme-amendment-regulations-2017/regulation-9.json",
  "legislation": "ukdsi/2017/9780111156353",
  "legislation_title": "The Domestic Renewable Heat Incentive Scheme (Amendment) Regulations 2017",
  "legislation_url": "https://openlegislation.uk/draft-domestic-renewable-heat-incentive-scheme-amendment-regulations-2017",
  "path": "regulation/9",
  "kind": "regulation",
  "number": "9",
  "heading": "Amendment to regulation 29 (calculation of deemed annual heat generation)",
  "text": "In regulation 29, for paragraphs (2) to (5) substitute—\n“(2) If the accredited domestic plant is a biomass plant which provides space heating, but not heating for domestic hot water, to the RHI property, the deemed annual heat generation is—\n(a) for an accredited domestic plant with a tariff start date before the second relevant date, the heat demand for space heating specified in the relevant EPC for that property; or\n(b) for an accredited domestic plant with a tariff start date on or after the second relevant date, the lower of—\n(i) the heat demand for space heating specified in the relevant EPC for that property; or\n(ii) 25,000 kWh.\n(3) If the accredited domestic plant is a biomass plant which provides both space heating and domestic hot water heating to the RHI property, the deemed annual heat generation is—\n(a) for an accredited domestic plant with a tariff start date before the second relevant date, the heat demand for space heating and water heating specified in the relevant EPC for that property; or\n(b) for an accredited domestic plant with a tariff start date on or after the second relevant date, the lower of—\n(i) the heat demand for space heating and water heating specified in the relevant EPC for that property; or\n(ii) 25,000 kWh.\n(4) If the accredited domestic plant is a heat pump which provides space heating, but not heating for domestic hot water, to the RHI property, the deemed annual heat generation is—\n(a) for an accredited domestic plant with a tariff start date before the second relevant date, calculated in accordance with the following formula—\nA×( 1− 1 B ) where—\n(i) A is the heat demand for space heating specified in the relevant EPC for that property; and\n(ii) B is the seasonal performance factor for the heat pump; or\n(b) for an accredited domestic plant with a tariff start date on or after the second relevant date, the lower of—\n(i) the result of the formula in sub-paragraph (a); or\n(ii) the result obtained from applying the following formula—\nC×( 1− 1 B ) where—\n(aa) C is 20,000 kWh in the case of an air source heat pump, or 30,000 kWh in the case of a ground source heat pump; and\n(bb) B is the seasonal performance factor for the heat pump.\n(5) If the accredited domestic plant is a heat pump which provides both space heating and domestic hot water heating to the RHI property, the deemed annual heat generation is—\n(a) for an accredited domestic plant with a tariff start date before the second relevant date, calculated in accordance with the following formula—\nA×( 1− 1 B ) where—\n(i) A is the heat demand for space heating and water heating specified in the relevant EPC for that property; and\n(ii) B is the seasonal performance factor for the heat pump; or\n(b) for an accredited domestic plant with a tariff start date on or after the second relevant date, the lower of—\n(i) the result of the formula in sub-paragraph (a); or\n(ii) the result obtained from applying the following formula—\nC×( 1− 1 B ) where C and B have the same meaning as in paragraph (4).”.",
  "extent": null,
  "status": null,
  "version": "current",
  "annotations": [],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/ukdsi/2017/9780111156353/regulation/9",
    "retrieved_at": "2026-10-30T15:06:33.880966+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."
}