And we thought the Energy Curtains were cool. These windows, which look almost like everyday windows, contain translucent solar cells that capture energy from the sun. They were unveiled at Taipei’s International Optoelectronics Week and come in a few different opacity levels. The darker the window the more energy it can harvest. While they’re a long ways away from replacing a stand alone solar cell, or so we guess, they’re far more practical than slapping up additional panels on your roof, that is assuming of course your anti-eye sore and are willing to take the gamble that little Jimmy doesn’t fire a baseball through them.