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I can't find hard data on how many searches are done on google It's hinted in the article. with more than 200m internet searches estimated globally daily Goo

I can't find hard data on how many searches are done on google It's hinted in the article. with more than 200m internet searches estimated globally daily Google has an 81% market share. Let's call it 170 million searches per day. 49 grams of CO2 are released per kWh. http://blogsearch.google.com/blogsearch?q=Alex+Wissner-Gross+kwh http://blogsearch.google.com/blogsearch?q=Alex+Wissner-Gross... The article said that Google releases 7 grams per search, so that would be 1/7th of a kWh ~= 0.14 kWh. Multiplying that by 170m searches/day = 24m kWh/day. At $0.10/kWh, that would be $2.4 million/day, or $886 million/year. You figured $1 billion/day, but, besides using different assumptions, you incorrectly calculated 1.5 billion searches/day * .7 cents/search/day. It actually equals only $10.5 million/day. [EDIT] walterk beat me by a minute to that final math correction.

Eliezer 18y ago
How can there possibly be only 200m searches per day? I must use Google at least a hundred times daily, probably more. There's not even two million people like that already, in the whole Earth?
- gravitycop 18y ago
  Here's more data. I think this is just for the U.S.: http://news.cnet.com/8300-1023_3-93.html http://news.cnet.com/8300-1023_3-93.html Google's searches rose 21.7 percent, for 64.1 percent market share, and Yahoo's searches dropped 1.4 percent from November 2007, for 16.1 percent share. Total searches for the month exceeded 8 billion, up 9.6 percent from a year earlier. [...] Correction at 5:50 a.m. Monday: This story had an incorrect total for U.S. searches in November. The total was 12.3 billion. [...] Google grabbed a chunk of market share from rival search engines in the United States in November, new figures from ComScore show. [...] The total searches performed dropped 3 percent to 12.3 billion, though, so even Google lost out in absolute terms even as it gained share. - Dividing by 30 days, that would be 410 million searches per day, in the U.S. For ~200 million internet users, that would be 2 searches per user per day.

Eliezer 18y ago

How can there possibly be only 200m searches per day? I must use Google at least a hundred times daily, probably more. There's not even two million people like that already, in the whole Earth?

gravitycop 18y ago
Here's more data. I think this is just for the U.S.: http://news.cnet.com/8300-1023_3-93.html http://news.cnet.com/8300-1023_3-93.html Google's searches rose 21.7 percent, for 64.1 percent market share, and Yahoo's searches dropped 1.4 percent from November 2007, for 16.1 percent share. Total searches for the month exceeded 8 billion, up 9.6 percent from a year earlier. [...] Correction at 5:50 a.m. Monday: This story had an incorrect total for U.S. searches in November. The total was 12.3 billion. [...] Google grabbed a chunk of market share from rival search engines in the United States in November, new figures from ComScore show. [...] The total searches performed dropped 3 percent to 12.3 billion, though, so even Google lost out in absolute terms even as it gained share. - Dividing by 30 days, that would be 410 million searches per day, in the U.S. For ~200 million internet users, that would be 2 searches per user per day.