{
  "version": "2026-08-30.1",
  "region": "UK",
  "factor_year": 2026,
  "fuel": "Natural gas",
  "energy_basis": "Gross CV",
  "factor_unit": "kg CO2e/kWh",
  "source_page": "https://www.gov.uk/government/publications/greenhouse-gas-reporting-conversion-factors-2026",
  "source_workbook": "https://assets.publishing.service.gov.uk/media/6a29392bade52dc0882218a8/ghg-conversion-factors-2026-full-set.xlsx",
  "source_sha256": "b5c4f2f86cdc74707337b2fb013b44ded189a1b528f5e29ea99856ba65ae0205",
  "source_cell": "Fuels!D42",
  "boundary": "Illustrative operational fuel-saving estimate. Not measured savings or a lifecycle result.",
  "rows": [
    {
      "quantity": "Heat loss avoided",
      "value": "10",
      "unit": "kW",
      "basis": "Scenario assumption"
    },
    {
      "quantity": "Operating hours",
      "value": "8000",
      "unit": "h/year",
      "basis": "Scenario assumption"
    },
    {
      "quantity": "Boiler efficiency",
      "value": "0.85",
      "unit": "fraction, Gross CV",
      "basis": "Scenario assumption"
    },
    {
      "quantity": "Annual heat saved",
      "value": "80000",
      "unit": "kWh/year",
      "basis": "10 * 8000"
    },
    {
      "quantity": "Annual fuel saved",
      "value": "94117.64705882352941176470588",
      "unit": "kWh/year, Gross CV",
      "basis": "80000 / 0.85"
    },
    {
      "quantity": "Natural gas emission factor",
      "value": "0.18231",
      "unit": "kg CO2e/kWh, Gross CV",
      "basis": "UK 2026 full set, Fuels!D42"
    },
    {
      "quantity": "Annual emissions avoided",
      "value": "17.15858823529411764705882353",
      "unit": "t CO2e/year",
      "basis": "Annual fuel saved * 0.18231 / 1000"
    }
  ]
}