A plane powered by the sun will attempt an unprecedented flight around the world next month, the project’s founders said, seeking to prove that flying is possible without using fossil fuel.

Solar Impulse 2 is set to take off from Abu Dhabi with stopovers in India, Myanmar and China before crossing the Pacific Ocean and flying across the US and southern Europe to arrive back in Abu Dhabi.

On its five-month journey of 35,000 kilometres, the engines will be powered only by solar energy. The two Swiss pilots will take turns at the controls in the tiny cabin for five consecutive days and nights.

“Miracles can be achieved with renewables such as solar power. We want to show we can fly day and night in an aircraft without a drop of fuel,” Bertrand Piccard, one of the pilots and the project’s co-founder, told reporters on the sidelines of the World Future Energy summit currently under way in Abu Dhabi, capital of the United Arab Emirates.

The plane, which has the weight of a family car (2,300 kg) and a wingspan equal to that of the largest passenger airliners, will take off in late February and return by late July. Its journey will span approximately 25 flight days at speeds between 50km and 100km per hour. Feasibility studies, design and construction have taken 12 years, said Andre Borschberg, the second pilot and co-founder.

“It is not the first solar airplane, however, it is the first able to cross oceans and continents,” he said.