These coefficients are used to calculate Primary Energy requirements and CO2 emission rates
| Fuel | Name | CO2emission rate kg CO2 / kWh(final) |
Primary Energy Factor kWh(primary) / kWh(final) |
|---|---|---|---|
| Gas | mains gas | 0.21 | 1.15 |
| bulk LPG | 0.25 | 1.1 | |
| bottled LPG | 0.25 | 1.1 | |
| Oil | heating oil | 0.28 | 1.19 |
| biodiesel from any biomass source | 0.1 | 1.19 | |
| biodiesel from used cooking fuel only | 0.02 | 1.19 | |
| rape seed oil | 0.06 | 1.19 | |
| appliances able to use mineral oil or liquid biofuel | 0.28 | 1.19 | |
| B30K | 0.21 | 1.19 | |
| Solid | house coal | 0.38 | 1.07 |
| anthracite | 0.37 | 1.07 | |
| manufactured smokeless fuel | 0.4 | 1.3 | |
| wood logs | 0.02 | 1.1 | |
| wood pellets (in bags, for secondary heating) | 0.04 | 1.1 | |
| wood pellets (bulk supply in bags,for main heating) | 0.04 | 1.1 | |
| wood chips | 0.02 | 1.1 | |
| dual fuel appliance (mineral and wood) | 0.24 | 1.1 | |
| Electricity | Electric standard tariff | 0.59 | 2.5 |
| 7-hour tariff(on-peak) | 0.59 | 2.5 | |
| 7-hour tariff(off-peak) | 0.59 | 2.5 | |
| 10-hour tariff(on-peak) | 0.59 | 2.5 | |
| 10-hour tariff(off-peak) | 0.59 | 2.5 | |
| 24-hour heating tariff | 0.59 | 2.5 | |
| electricity sold to grid | 0.59 | 2.5 | |
| electricity displaced from grid | 0.59 | 2.5 | |
| Community Heating | heat from boilers–gas | 0.21 | 1.15 |
| heat from boilers–LPG | 0.25 | 1.1 | |
| heat from boilers–Oil | 0.29 | 1.19 | |
| heat from boilers–Coal | 0.39 | 1.07 | |
| heat from heat pump | 0.59 | 2.5 | |
| heat from boilers–waste combustion | 0.05 | 1.1 | |
| heat from boilers–biomass | 0.02 | 1.1 | |
| heat from boilers–biogas ( landfill or sewage gas) | 0.02 | 1.1 | |
| waste heat from power stations | 0.06 | 1.15 | |
| geothermal heat source | 0.04 | 1.17 | |
| heat from CHP-gas | 0.21 | 1.15 | |
| heat from CHP-LPG | 0.25 | 1.1 | |
| heat from CHP-Oil | 0.29 | 1.19 | |
| heat from CHP-Coal | 0.39 | 1.07 | |
| heat from CHP-waste combustion | 0.05 | 1.1 | |
| heat from CHP-biomass | 0.02 | 1.1 | |
| heat from CHP-biogas ( landfill or sewage gas) | 0.02 | 1.1 | |
| electricity generated by CHP | 0.59 | 2.5 | |
| electricity for pumping in distribution network | 0.59 | 2.5 |