Saturday, May 23, 2009

Green Good Intentions and Polluting Realities

The research conducted by the group Transport Watch found that diesel powered vehicles emit approximately half as much CO2 as electric cars when the use of fossil fuels to produce electricity is taken into account.

The research paper says: "We conclude that the notion that electric cars will reduce emissions is a fiction."

Factors making the rechargeable cars less efficient include the amount of electricity lost on the journey between the coal fired power stations which generate it and the point where it recharges the car, and the energy lost by the batteries and the motor.
The researchers calculated that of the energy burned in a power station, only a quarter reaches an electric car after leakages and losses along the supply chain are considered, giving the vehicle an energy efficiency score of 24%.

A modern diesel engine, by contrast, achieves 45% efficiency.