{
  "url": "https://openlegislation.uk/eu-decision-2014-806/annex/division-3/division-2",
  "json_url": "https://openlegislation.uk/eu-decision-2014-806/annex/division-3/division-2.json",
  "legislation": "eudn/2014/806",
  "legislation_title": "Commission Implementing Decision of 18 November 2014 on the approval of the battery charging Webasto solar 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) (2014/806/EU)",
  "legislation_url": "https://openlegislation.uk/eu-decision-2014-806",
  "path": "annex/division/3/division/2",
  "kind": "division",
  "number": "2",
  "heading": "The following input data for the calculation of CO2 savings potential are to be used:",
  "text": "mean solar irradiation PSR specified in Chapter 5.7.1 of the Technical Guidelines, i.e. 120 W/m2,\nusage factor/shading effect UFIR specified in Chapter 5.4.2 of the Technical Guidelines, i.e. 0,51,\nefficiency of the solar system ηSS specified in Chapter 5.1.3 of the Technical Guidelines, i.e. 0,76,\nsolar correction coefficient SCC specified in Table 1 and in Chapter 5.7.2 of the Technical Guidelines,\nTable 1\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 (12 V)/ PV peak power (Ah/Wp)\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\nconsumption of effective power for petrol VPe-P and diesel-fuelled vehicles VPe-D specified in Table 2 and in Chapter 5.1.1 of the Technical Guidelines,\nTable 2\nType of engine\nConsumption of effective power VPe (l/kWh)\nPetrol (VPe-P)\n0,264\nDiesel (VPe-D)\n0,22\nefficiency of the alternator ηΑ , specified in Chapter 5.1.2 of the Technical Guidelines, i.e. 0,67.\nFor the conversion factors CF the data in Table 3 is to be used:\nTable 3\nType of fuel\nConversion factor (l/100 km) → (g CO2/km) (100 g/l)\nPetrol (CFP)\n23,3 (= 2 330 g CO2/l)\nDiesel (CFD)\n26,4 (= 2 640 g CO2/l)\nFor the mean annual mileage the data in Table 4 is to be used (km/year):\nTable 4\nType of fuel\nMean annual mileage (km/year)\nPetrol (MP)\n12 700\nDiesel (MD)\n17 000\nWith these input data the CO2 savings for a petrol-fuelled vehicle are to be calculated by Formula (2).\nThe difference in mass between the baseline vehicle and the eco-innovation vehicle due to the installation of the solar roof and where relevant, the extra battery, is to be taken into account by applying the mass correction coefficient. The baseline vehicle is to be a vehicle variant that in all aspects is identical to the eco-innovation vehicle with the exception of the solar roof and, where applicable, without the additional battery and other appliances needed specifically for the conversion of the solar energy into electricity and its storage.\nFor a new version of a vehicle in which the solar roof panel is installed the baseline vehicle is to be specified as follows: it is the vehicle in which the solar roof panel is disconnected and the change in mass due to the installation of the solar roof is taken into account. In case the solar roof panel is made of glass a correction for the change in mass is to be introduced, i.e. an extra mass of 3,4 kg. In case the solar roof panel is made of low weight synthetic material no correction for the change in mass has to be made. On this change of mass the manufacturer must hand over verified documentation to the Type-Approval Authority.\nFormula (2):\nC CO 2 = P SR × UF IR × η SS × P P × SCC × V Pe − P η A × CF P M P × cosΦ − ΔCO 2mP\nWhere:\nCCO 2 CO2 savings (g CO2/km);\nPSR Mean solar irradiation (W/m2);\nUFIR Usage factor/shading effect (-);\nηSS Efficiency of the solar system (-);\nPP Peak power output (Wp);\nSCC Solar correction coefficient (-);\nVPe – P Consumption of effective power for petrol vehicles (l/kWh);\nηA Efficiency of the alternator (-);\nCFP Conversion factor for petrol vehicles (100 g/l);\nMP Mean annual mileage for petrol vehicles (km/year);\nΦ Lengthwise inclination of the solar panel [o];\nΔCO2mP CO2 correction coefficient due to the change in mass following the installation 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 for petrol vehicles (g CO2/km).\nThe CO2 savings for diesel-fuelled vehicles are to be calculated by Formula (3).\nThe difference in mass between the baseline vehicle and the eco-innovation vehicle due to the installation of solar roof and, where relevant, the extra battery is to be taken into account by applying the mass correction coefficient. The baseline vehicle is to be a vehicle variant that in all aspects is identical to the eco-innovation vehicle with the exception of the solar roof and, where applicable, without the additional battery and other appliances needed specifically for the conversion of the solar energy into electricity and its storage.\nFor a new version of a vehicle in which the solar roof panel is installed the baseline vehicle is to be specified as follows: it is the vehicle in which the solar roof panel is disconnected, and the change in mass due to the installation of the solar roof is taken into account. In case the solar roof panel is made of glass a correction for the change in mass is to be introduced, i.e. an extra mass of 3,4 kg. In case the solar roof panel is made of low weight synthetic material no correction for the change in mass has to be made. On this change of mass the manufacturer must hand over verified documentation to the Type-Approval Authority.\nFormula (3):\nC CO 2 = P SR × UF IR × η SS × P P × SCC × V Pe − D η A × CF D M D × cosΦ − ΔCO 2mD\nWhere:\nVPe – D Consumption of effective power for diesel vehicles (l/kWh);\nCFD Conversion factor for diesel vehicles (100 g/l);\nMD Mean annual mileage for diesel vehicles (km/year);\nΔCO2mD CO2 correction coefficient due to the change in mass following the installation 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 for diesel vehicles (g CO2/km).\nThe CO2 correction coefficient due to the change in mass is to be calculated by Formulas (4) and (5).\nFormula (4):\nΔCO 2mP = 0,0277 × Δm for a petrol-fuelled vehicle\nand\nFormula (5):\nΔCO 2mD = 0,0383 × Δm for a diesel-fuelled vehicle\nWhere:\nΔm Change in mass due to the installation 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 (e.g. 5 kg).",
  "extent": "E+W+S+N.I.",
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "footnote",
      "label": "f1",
      "text": "The Technical Guidelines for the preparation of applications for the approval of innovative technologies pursuant to Regulation (EC) No 443/2009 (version of February 2013)."
    },
    {
      "type": "footnote",
      "label": "f2",
      "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."
    },
    {
      "type": "footnote",
      "label": "f3",
      "text": "Chapter 5, par. 5.1 of the reference JRC study http://europa.eu/!qN68wc"
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/eudn/2014/806/annex/division/3/division/2",
    "retrieved_at": "2026-11-01T15:14:35.031116+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."
}