Buildings that power themselves:

https://phys.org/news/2017-11-solar-cell-discovery-window-powering.html

This can be a game changer

Originally posted by @sonhouse
https://phys.org/news/2017-11-solar-cell-discovery-window-powering.html

This can be a game changer

What game is that?

Originally posted by @wolfgang59
What game is that?

The game called I ain't paying your stinking electric bill anymore.....