Not so fast, says The Economist in a leader:
Highly charged motoring
Electric cars, though a welcome development, are neither as useful nor as green as their proponents claim
…the big car firms are pushing all-electric cars for the mass market. At the Paris Motor Show this week they unveiled electric vehicles of all shapes and sizes. Some go on sale in the next few months.
This represents a huge leap forward for the industry, but the showroom patter will be misleading, for two reasons. First, although electric cars are nippy, stylish and as easy to drive as conventional vehicles, electric motoring has some distinct disadvantages. Second, they are not really as green as their promoters claim.
The idea of recharging an electric car at home for only a few dollars and never again having to visit a filling station is enticing. For most journeys, the limitations of battery capacity are irrelevant. As salesmen will be quick to point out, 99% of the time people do only short runs—the daily commute, trips to the shops and to pick up the children—all of which are well within the range of most electric cars.
But that final 1% of journeys presumably includes the summer holiday when people pile into the car and head off for the coast. Hopping on the train laden with suitcases and children may not be an attractive alternative. And even the relatively short ranges that salesmen advertise may be optimistic. On a cold, wet night when lots of electrical systems are running and the vehicle is laden with passengers and luggage, a car may lose around a third of its supposed range [emphasis added--Canada, eh?].
…what of electric cars’ environmental credentials? Electric cars are being hugely subsidised by taxpayers—£5,000 ($7,940) in Britain and up to $7,500 in America—on the ground that they are zero-emission vehicles. Makers of electric cars claim that this is an efficient way to reduce greenhouse-gas emissions. Road transport accounts for a tenth of such emissions worldwide; the sorts of biofuels currently in use are not much greener than petrol [The Economist is including diesel, which fuels some 50% of cars in Europe]; and next-generation biofuels are proving slow to come to the market.
Although electric cars may not themselves produce greenhouse gases, generating the electricity they use does. How green they are depends on the fuel mix at the power plants in the country in which they are driven. An electric car in Britain today, for instance, produces around 20% less in CO2 emissions than a car with a petrol engine. Even if the generating mix gets greener, electric vehicles are so expensive to produce, that they will still be a relatively costly way of abating CO2 emissions. Sceptics therefore doubt that the subsidy is a good use of public money. According to Richard Pike, chief executive of the Royal Society of Chemistry, replacing all of Britain’s cars with subsidised electric cars would cost the taxpayer £150 billion and, with Britain’s current fuel mix, cut CO2 emissions from cars by about 2%. For the same money, Britain could replace its entire power-generation stock with solar cells and cut its emissions by a third…
This is their news story in the same issue:
A sparky new motor
The first mass-market electric cars are arriving in showrooms. They represent a big gamble for carmakers
As for, er, Leafs…
Cars and electric fairyland: Not much jolt from the Volt
Mark
Ottawa





