{
  "url": "https://openlegislation.uk/eu-decision-2016-1926/annex/division-4/division-1",
  "json_url": "https://openlegislation.uk/eu-decision-2016-1926/annex/division-4/division-1.json",
  "legislation": "eudn/2016/1926",
  "legislation_title": "Commission Implementing Decision (EU) 2016/1926 of 3 November 2016 on the approval of the battery-charging photovoltaic roof as an innovative technology for reducing CO2 emissions from passenger cars pursuant to Regulation (EC) No 443/2009 of the European Parliament and of the Council (Text with EEA relevance)",
  "legislation_url": "https://openlegislation.uk/eu-decision-2016-1926",
  "path": "annex/division/4/division/1",
  "kind": "division",
  "number": null,
  "heading": "Formula 1",
  "text": "CCO2=SIR×UFIR×ηSS×mPP–SIR_STC×SCC×VPeηA×CFM×cosΦ−ΔCO2mWhere:\nCCO2CO2 savings [g CO2/km]\nSIR Yearly European mean solar irradiation [W/m2], which is 120 W/m2\nUFIR Usage factor (shading effect) [-], which is 0,51\nηSS Efficiency of the photovoltaic system [%], which is 76 %\nmPP–Measured average PV roof peak power output [W]\nSIR_STC Global irradiation at Standard Test Conditions (STC) [W/m2], which is 1 000 W/m2\nSCCSolar correction coefficient [-] as defined in Table 1. Total available storage capacity of the battery system or the SCC value is to be supplied by the vehicle manufacturer.\nTable 1\nSolar correction coefficient\nThe total storage capacity includes a mean usable storage capacity of the starter battery of 10 Ah (12 V). All values refer to a mean annual solar radiation of 120 W/m2, a shading share of 0,49 and a mean vehicle driving time of 1 hour per day at 750 W electric power requirement.\nTotal available storage capacity of (12 V) battery system/average PV roof peak power output [Ah/W]\n0,10\n0,20\n0,30\n0,40\n0,50\n0,60\n> 0,666\nSolar correction coefficient (SCC)\n0,481\n0,656\n0,784\n0,873\n0,934\n0,977\n1\nVPe Consumption of effective power [l/kWh] as defined in Table 2\nTable 2\nConsumption of effective power\nType of engine\nConsumption of effective power (VPe)[l/kWh]\nPetrol\n0,264\nPetrol Turbo\n0,280\nDiesel\n0,220\nηA Efficiency of the alternator [%], which is 67 %;\nCFConversion factor (l/100km) — (g CO2/km) [gCO2/l] as defined in Table 3\nTable 3\nFuel conversion factor\nType of fuel\nConversion factor (l/100 km) — (g CO2/km) (CF)[gCO2/l]\nPetrol\n2 330\nDiesel\n2 640\nMMean annual mileage [km/year] as defined in Table 4\nTable 4\nMean annual mileage for M1 vehicles\nType of fuel\nMean annual mileage (M) [km/year]\nPetrol\n12 700\nDiesel\n17 000\nΦLengthwise inclination of the solar panel [°]. This value is to be supplied by the vehicle manufacturer\nΔCO2m CO2 correction coefficient due to the extra mass of the solar roof and, where applicable, the additional battery and other appliances needed specifically for the conversion of the solar energy into electricity and its storage [g CO2/km] as defined in Table 5.\nTable 5\nCO2 correction coefficient due to the extra mass\nType pf fuel\nCO2 correction coefficient due to the extra mass (ΔCO2m)[g CO2/km]\nPetrol\n0,0277 · Δm\nDiesel\n0,0383 · Δm\nIn Table 5 Δm is the extra mass due to the installation of the photovoltaic system, composed by the PV roof and, where applicable, the additional battery and other appliances needed specifically for the conversion of the solar energy into electricity and its storage.\nIn particular, Δm is the positive difference between the mass of the photovoltaic system mass and the mass of a standard steel roof. The mass of a standard steel roof is assumed equal to 12 kg. In case the weight of the solar system is lower than 12 kg, no correction for the change in mass has to be made.",
  "extent": "E+W+S+N.I.",
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "footnote",
      "label": "f1",
      "text": "The total storage capacity includes a mean usable storage capacity of the starter battery of 10 Ah (12 V). All values refer to a mean annual solar radiation of 120 W/m2, a shading share of 0,49 and a mean vehicle driving time of 1 hour per day at 750 W electric power requirement."
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/eudn/2016/1926/annex/division/4/division/1",
    "retrieved_at": "2026-11-01T15:13:47.924019+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."
}