Two Swiss pilots wowed a New York audience recently as they described their first cross-country flight and 2015 vision of circling the globe — with a possible stopover in Japan — on nothing but energy from the sun.

Fresh off their successful two-month, 5,650-km journey across the United States, Andre Borschberg and Bertrand Piccard touted the potential of a renewable energy source that could revolutionize the world.

A greater shift to alternative energy could especially benefit resource-poor and energy-dependent countries such as Japan and Switzerland.