September 1, 2010
The light perceived by the human eye is measured in units called lumen-hours. This is about the amount produced by burning a candle for an hour. In 1700 a typical Briton consumed 580 lumen-hours in the course of a year, from candles, wood and oil. Today, burning electric lights, he uses about 46 megalumen-hours—almost 100,000 times as much. Better technology has stimulated demand, resulting in more energy being purchased for conversion into light.
Just as the efficient vehicle owner finds himself driving more miles, so these will increase consumption. This would be good news to me, but blog brother jg is more concerned about light pollution than I.
Either way we can agree that the ridiculous nannying toward adopting these devices will -- mirabile non freakin dictu -- not achieve the nannies' goals.