{
  "url": "https://openlegislation.uk/draft-ecodesign-for-energy-related-products-and-energy-information-lighting-products-regulations-2021/schedule-3",
  "json_url": "https://openlegislation.uk/draft-ecodesign-for-energy-related-products-and-energy-information-lighting-products-regulations-2021/schedule-3.json",
  "legislation": "ukdsi/2021/9780348225488",
  "legislation_title": "The Ecodesign for Energy-Related Products and Energy Information (Lighting Products) Regulations 2021",
  "legislation_url": "https://openlegislation.uk/draft-ecodesign-for-energy-related-products-and-energy-information-lighting-products-regulations-2021",
  "path": "schedule/3",
  "kind": "schedule",
  "number": "3",
  "heading": "Ecodesign requirements for light sources and separate control gears",
  "text": "Light sources\n1 (1) The declared power consumption of a light source Pon must not exceed the maximum allowed power Ponmax (in W), defined as a function of the declared useful luminous flux Φuse (in lm) and the declared colour rendering index CRI (-) as follows—\nPonmax = C × (L + Φuse/(F × η)) × R;\nwhere—\n(a) the values for threshold efficacy (η in lm/W) and end loss factor (L in W) are as specified in Table 2, according to the light source type;\n(b) basic values for correction factor (C) depending on light source type, and additions to C for special light source features are specified in Table 3;\n(c) efficacy factor (F) is—\n(i) 1.00 for non-directional light sources (NDLS, using total flux);\n(ii) 0.85 for directional light sources (DLS, using flux in a cone);\n(d) CRI factor (R) is—\n(i) 0.65 for CRI ≤ 25;\n(ii) (CRI+80)/160 for CRI > 25,\nrounded to two decimals.\nTable 2\nThreshold efficacy (η) and end loss factor (L)\nLight source description\nη\nL\n(lm/W)\n(W)\nLFL T5-HE\n98.8\n1.9\nLFL T5-HO, 4,000 ≤ Φ ≤ 5,000 lm\n83.0\n1.9\nLFL T5-HO, other lm output\n79.0\n1.9\nFL T5 circular\n79.0\n1.9\nFL T8 (including FL T8 U-shaped)\n89.7\n4.5\nFrom 1st September 2023, for FL T8 of 2-, 4- and 5-foot\n120.0\n1.5\nMagnetic induction light source, any length or flux\n70.2\n2.3\nCFLni\n70.2\n2.3\nFL T9 circular\n71.5\n6.2\nHPS single-ended\n88.0\n50.0\nHPS double-ended\n78.0\n47.7\nMH ≤ 405 W single-ended\n84.5\n7.7\nMH > 405 W single-ended\n79.3\n12.3\nMH ceramic double-ended\n84.5\n7.7\nMH quartz double-ended\n79.3\n12.3\nOLED\n65.0\n1.5\nBefore 1 September 2023: HL G9, G4 and GY6.35\n19.5\n7.7\nHL R7s ≤ 2 700 lm\n26.0\n13.0\nConnected light sources (CLS) not mentioned above\n120.0\n2.0\nOther light sources not mentioned above\n120.0\n1.5\nTable 3\nCorrection factor C depending on light source characteristics\nLight source type\nBasic C value\nNon-directional (NDLS) not operating on mains (NMLS)\n1.00\nNon-directional (NDLS) operating on mains (MLS)\n1.08\nDirectional (DLS) not operating on mains (NMLS)\n1.15\nDirectional (DLS) operating on mains (MLS)\n1.23\nSpecial light source feature\nAddition on C\nFL or HID with CCT > 5,000K\n+0.10\nFL with CRI > 90\n+0.10\nHID with second envelope\n+0.10\nMH NDLS > 405 W with non-clear envelope\n+0.10\nDLS with anti-glare shield\n+0.20\nColour-tuneable light source (CTLS)\n+0.10\nHigh luminance light source (HLLS)\n+ 0.0058 · Luminance-HLLS – 0.0167\n(2) For the purposes of this paragraph—\n(a) where applicable, additions on correction factor C are cumulative;\n(b) the addition for HLLS must not be combined with the basic C-value for DLS (basic C-value for NDLS must be used for HLLS);\n(c) light sources which allow the end-user to adapt the spectrum and/or the beam angle of the emitted light, resulting in changes to the values for useful luminous flux, colour rendering index (CRI) and/or correlated colour temperature (CCT), and/or changing the directional/non-directional status of the light source, must be evaluated using the reference control settings;\n(d) the standby power Psb of a light source must not exceed 0.5 W;\n(e) the networked standby power Pnet of a connected light source must not exceed 0.5 W;\n(f) the allowable values for Psb and Pnet must not be added together.\n(3) This paragraph is subject to the exemptions in paragraph 3(3) of Schedule 4.\nSeparate control gears\n2 (1) The minimum energy efficiency requirements of a separate control gear operating at full-load are the values set out in Table 4.\nTable 4\nMinimum energy efficiency for separate control gear at full-load\nDeclared output power of the control gear (Pcg) or declared power of the light source (Pls) in W, as applicable\nMinimum energy efficiency\nControl gear for HL light sources\nall wattages Pcg\n0.91\nControl gear for FL light sources\nPls ≤ 5\n5 < Pls ≤ 100\n100 < Pls\n0.71\nPls/(2 × √(Pls/36) + 38/36 × Pls+1)\n0.91\nControl gear for HID light sources\nPls ≤ 30\n30 < Pls ≤ 75\n75 < Pls ≤ 105\n105 < Pls ≤ 405\n405 < Pls\n0.78\n0.85\n0.87\n0.90\n0.92\nControl gear for LED or OLED light sources\nall wattages Pcg\nPcg 0.81/(1.09 × Pcg 0.81 + 2.10 )\n(2) For the purposes of this paragraph, the requirements of Table 4 apply to multi-wattage separate control gears in respect of the maximum declared power on which they can operate.\n(3) Where a manufacturer or importer has declared in the technical documentation that a separate control gear has been designed for no-load mode, the no-load power Pno of the control gear must not exceed 0.5W.\n(4) The standby power Psb of a separate control gear must not exceed 0.5 W.\n(5) For a connected separate control gear—\n(a) the networked standby power Pnet must not exceed 0.5 W;\n(b) the allowable values for Psb and Pnet must not be added together.\n(6) This paragraph is subject to the exemptions in paragraph 3(3) of Schedule 4.",
  "extent": null,
  "status": null,
  "version": "current",
  "annotations": [],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/ukdsi/2021/9780348225488/schedule/3",
    "retrieved_at": "2026-10-30T14:46:52.629854+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."
}