I just read NDT's Death By Black Hole [0] in which he mentions some cities like New York waste millions of dollars a year on the energy that sends light skyward

I just read NDT's Death By Black Hole [0] in which he mentions some cities like New York waste millions of dollars a year on the energy that sends light skyward. So the incentive is there, it's probably they have failed to be long term thinking enough to eat the upfront installation costs until the the reduced overhead pays off 5 years later or w/e. [0]http://smile.amazon.com/Death-Black-Hole-Cosmic-Quandaries/dp/039335038X/ref=sr_1_1?ie=UTF8&qid=1417571568&sr=8-1&keywords=death+by+black+hole http://smile.amazon.com/Death-Black-Hole-Cosmic-Quandaries/d...