Though a direct co-relation is rarely attempted due to various inherent capacity issues, a near approximation which is fairly accurate denotes the yawning disparity in the emissions due to a vehicle that is run on coal-fired drawn electricity at source and one run on petrol. Consider these facts and figures. A kilogramme of coal produces 8 kwh of electricity which can run a car for 50 kilometres and the emission of carbon dioxide is 3.3 kgs. Relatively, to run a car on petrol for 50 kilometres it would take 3.4 litres of petrol and the emissions of carbon dioxide would calculate to 6.8 kgs. So from these figures it is pertinent to evaluate that an electric vehicle is cleaner as far as emissions of carbon dioxide is concerned to the tune of 2 times for an equivalent of petrol required to do the same mileage. Thus owning an electrical vehicle is maintaining the ambient air quality index twice cleaner than using petrol. Reason enough why people should turn to buying electric cars to combat global warming.
