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The proposed urban EV, with 27% well-to-wheel efficiency, is twice as efficient as an ICEV and the annual fuel cost of the urban EV is 6 times less than a gasoline one.
That's more than twice as efficient as conventional solar cells.
For goals-per-minute, he's been nearly twice as efficient as Berisha this season.
For a start, electric motors are about twice as efficient as internal combustion or jet engines.
Natural gas is twenty per cent cheaper than coal and twice as efficient.
Mr. Brodrick said that LED lamps currently under development were twice as efficient as C.F.L.'s.
By 2015 they will be twice as efficient, saving over $300m a year.
They're around 10 times more efficient than incandescent bulbs, and twice as efficient as fluorescent bulbs.
LEDs are more than twice as efficient as compact fluorescent bulbs, currently the standard for greener lighting.
A gas condensing boiler extracts heat from flue gases and is more than twice as efficient as a conventional boiler.
Mr. Schoenwald says FuelCell's technology has the potential to be twice as efficient as that of its rivals.
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