The Solar Impulse 2 in flight
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Solar Impulse 2 plane set for round-the-world flight

The plans have been set for the solar-powered plane, Solar Impulse 2, to take off from Abu Dhabi and then fly around the globe using only the sun's energy.

With a wingspan of 72m (236ft), Solar Impulse 2 is the width of a Boeing 747, but weighs about the same as a large car.

Its predecessor, Solar Impulse 1 has already been flown across America and stored sufficient power in its batteries to fly all night.

Mark Lobel reports.

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