Good in theory, until you count up all the energy needed to mine the ore, refine it, smelt it, form it, and create all of those wonderful nano crystals needed to convert sunlight into H.
Somehow these whizbrains have left out all the energy needed to get to a working model that can't even power a 100 watt light bulb.
Yes and in order to start a business you have to spend allot of money up front... When the technology reaches higher effecincies you can you it to power the process of makin the cells... Its a ways off but dont dismiss it..