It will be the first ever manned night flight on a plane propelled exclusively by solar energy.
Bbc solar panel plane.
Media caption andre borschberg gives the bbc a guided tour of the solar plane.
A solar powered plane is expected to begin the first ever round the world trip of its kind on monday.
The carbon fibre aircraft has a huge wingspan which at 72m is wider than a boeing 747 jet.
The bbc s mark lobel reports from abu dhabi.
And yet the vehicle.
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A solar plane which can stay aloft for weeks at a time is to be manufactured by airbus in the uk.
The flight should last about 48 hours.
A solar powered plane is getting ready to hit the skies once again this time at night.
Close share panel media playback is unsupported on your device media caption the bbc s john sudworth watched solar impulse take off from nanjing on the most difficult phase of its round the world.
Bbc solar and more specialize in industrial commercial federal state and local government custom turnkey projects in water separation technologies solar outdoor led lighting systems and utility scale solar power solutions.
Media caption take off occurred at 23 30 gmt.
Image caption the financial services ombudsman said it had received 2 000 complaints about solar panels.
The zero fuel aeroplane solar impulse has left the egyptian capital cairo on the last leg of its global tour.