Photovoltaic(PV) power plant platforms that solve all of the current problems of PV electricity generation:
A communications platform that can provide internet access to the "other 3 Billion" who don't have it.
There are 2.8B people without Internet access in Asia alone, far more than all current internet users. They represent the future growth of the internet, but providing them internet access means solving several problems:
StratoSolar communications platform solution: