reminicism
Dwipen Khwairakpam
This is an interesting finding:
An all white web page uses about 74 watts to display, while an all black page
uses only 59 watts. If we think of it and do a little math and see what could
be saved by moving a high volume site to the black format.
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 monitors in the world are CRTs, and at 10 cents a
kilowatt-hour, that's $75,000, a goodly amount of energy and dollars for
changing a few color codes.
How can you help?
Set Blackle as your home page. This way every time you load your Internet
browser you will save a little bit of energy. Remember every bit counts! You
will also be reminded about the need to save energy each time you see the
Blackle page load.
Visit
http://blackle.com/ for more information
Blogs published:
http://ecoiron.blogspot.com/2007/01/black-google-would-save-3000-megawatts.html
Energy consumption by colors:
http://www.microtech.doe.gov/EnergyStar/info.htm#display
Regards,
Dwipen
An all white web page uses about 74 watts to display, while an all black page
uses only 59 watts. If we think of it and do a little math and see what could
be saved by moving a high volume site to the black format.
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 monitors in the world are CRTs, and at 10 cents a
kilowatt-hour, that's $75,000, a goodly amount of energy and dollars for
changing a few color codes.
How can you help?
Set Blackle as your home page. This way every time you load your Internet
browser you will save a little bit of energy. Remember every bit counts! You
will also be reminded about the need to save energy each time you see the
Blackle page load.
Visit
http://blackle.com/ for more information
Blogs published:
http://ecoiron.blogspot.com/2007/01/black-google-would-save-3000-megawatts.html
Energy consumption by colors:
http://www.microtech.doe.gov/EnergyStar/info.htm#display
Regards,
Dwipen