CO2 emissions from Various Fuels
| Fuel type | Kg of CO2 per unit of consumption |
| Grid electricity | 43 per kWh |
| Natural gas | 3142 per tonne |
| Diesel fuel | 2.68 per litre |
| Petrol | 2.31 per litre |
| Coal | 2419 per tonne |
| LPG | 1.51 per litre |
Carbon emission from Various Transport vehicles
| Vehicle type | Kg CO2 per litre |
| Small petrol car 1.4 litre engine | 0.17/km |
| Medium car (1.4 – 2.1 litres) | 0.22/km |
| Large car | 0.27/km |
| Average petrol car | 0.20/km |
| Small diesel car (>2 litres) | 0.12/km |
| Large car | 0.14/km |
| Average diesel car | 0.12/km |
| Articulated lorry, diesel engine | 2.68/km (0.35litres fuel per km) |
| Rail | 0.06 per person per km |
| Air, short haul ( 500km) | 0.18 per person per km |
| Air, long haul | 0.11 |
| Shipping | 0.01 per tonne per km |