have you seen these modern, energy efficient lights though?
At ferrybridge we're replacing a lot of the street lighting with LED lighting, that supposedly gives out the same quantity of light as sodium lamps for approximately a quarter of the power consumption. All that has really happened is that the station is like a black hole at night. Also these "guaranteed for 10 years" fittings seem to stop functioning after about 6 months, but that's probably where they get their power consumption figures from.
Sodium and metal halide lamps ftw!
( parttimedogfish is a Born-Again Reincarnationist, Wed 29 Feb 2012, 12:14, Reply)