Andrew Davey, a 13-year-old who lives in Knaphill, Surrey, UK has created a search engine website that can help people save energy. Andrew got the idea from a Mark Ontkush, who concluded that an all-white web page uses 74 watts of energy compared to 59W from an all-black webpage. Therefore changing from using a white web page to a black one would save up to 15W every time it’s displayed.
Andrew has created EcoSmartSearch, a search engine powered by Google, but displays results pages in black rather than in white. Here are some numbers, as quoted from Andrew’s search engine website:
"Take at look at Google, who gets about 200 million queries a day. Let’s assume each query is displayed for about 10 seconds; that means Google is running for about 550,000 hours every day on some desktop. Assuming that users run Google in full screen mode, the shift to a black background will save a total of 15 (74-59) watts. That turns into a global savings of 8.3 Megawatt-hours per day, or about 3000 Megawatt-hours a year. Now take into account that about 25 percent of the are CRTs, and at 10 cents a kilowatt-hour, that’s $75,000, a goodly amount of energy and dollars for changing a few colour code"
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