For electric-powered transportation to make good climate sense in a given region, no more than roughly 0.6 tonnes of carbon dioxide equivalent should be emitted into the atmosphere for every MWh(Megawatt-hour) of electricity generated. The clock is ticking on carbon intensity, and nations need to slash their electric power emissions below the 0.6 tonne mark by 2020 in order to meet international goal of keeping global warming to no more than 2 degrees he said. After 2020, all nations must act fast to reduce intensity by more than 90 per cent by 2050 to prevent further warming.

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