The future in Solar Technology is changing BIG time with the introduction of PV Solar Windows, Siding, Blinds, and Shutters. Solar power is now being integrated into building "parts". In the future this will become more common place in Architectural Design. Photovoltaics (PV) is the name of a method of converting solar energy into direct current electricity using semiconducting materials that exhibit the photovoltaic effect.
I am selling these domains only because I have way too many projects currently going on and do not have the resources to fully bring this HUGE opportunity to fruition. If you are looking for a business opportunity with a huge future potential this is definitely it.