Solar Balloons With Helium

This baloons are coated with solar cells to produce electricity.The balloons are expected to overcome surface area issues such as in cities and crowded countries where large solar cell panels are not feasible.
This baloons can be used to suply electricity to desert,ships and other isolated homes.The same cable that brings the helium to the balloon will also carry the electricity to the ground, and your home may require only one or two balloons.
Source:here