Solar windows can power buildings

Solaria uses existing photovoltaic (PV) cells and slices them into 2.5mm strips. It then sandwiches those thin PV strips between glass layers in a window. "The way human eye works, you don't even notice them," Sharma said.

An additional benefit? As the PV strips absorb light striking a building's window, they reduce the "solar heat gain coefficient"; in other words, the windows reduce the sunlight's effect on a building's internal air temperature and thereby lower air conditioning costs.

"It's actually very viable and will be even more viable as we approach our product launch," Conklin said. "It's in very high demand because right now skyscrapers... don't have a good way of offsetting energy through renewable energy generation."

http://www.computerworld.com/article/2980236/sustainable-it/solar-windows-poised-to-change-the-way-we-power-buildings.html