You're looking at a pretty amazing idea for generating solar power: Solar Balloons. These gigantic, helium-filled balloons would be tethered to the ground and hoisted far up into the air, allowing them to generated electricity and send it back down to earth without taking up space and with as small an environmental impact as possible.
Constructed of a "new fabric coated with photovoltaic solar cells," these light-as-air balloons would float high in the air, soaking up more sun than traditional solar panels while being more eco-friendly all around. Not to mention the fact that they look pretty awesome. Let's make these things a reality, shall we?