LED lighting can save more electricity than solar will produce, according to LED pioneer Roland Haitz, former chief technology officer, semiconductor products group, Hewlett-Packard (later Agilent).
"20 percent of the world's electricity that's generated is used for lighting. Three quarters of that can be saved by using LEDs; 15 percent of today's electricity consumption can be saved," he said at the Economist's Innovation Summit.
He said that there was a lot of noise around green technology and that projects relating to solar cells and wind energy tend to get a lot of government funding. However, he believes that focusing on technologies such as LEDs could make a bigger difference. Solar energy currently accounts for 0.5 percent of the world's supply, although some have predicted that it could provide as much as 22 percent by 2050.
Haitz is in a good place to comment, as he has had the LED equivalent of Moore's Law named after him. Haitz's Law states that every decade, the cost per lumen falls by a factor of 10, the amount of light generated per LED package increases by a factor of 20 for a given wavelength of light.
Haitz says that LED lighting will be made extremely cheaply, with much better light output than the current 200 lumens per watt which are currently possible, compared with a standard 100 watt incandescent lightbulb which has an efficiency of around 17 lumens per watt.
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