How can a dark webpages save engergy? According to energy saving organizations a webpage that has one color displayed on your monitor could save colors. I stumbled into a website that actually promotes energy saving by proposing a Black Google. This website is called Blackle and is powered by a custom Google Search form. This is a screenshot of the webpage.

Why transform the clean white Google into a black one. According to Blackle:

a black version of the Google search engine would save a fair bit of energy due to the popularity of the search engine. Since then there has been skepticism about the significance of the energy savings that can be achieved and the cost in terms of readability of black web pages.

According to InternetWorldStats, there are 1,407,724,920
people using the internet. And referring to Google’s statistics on Alexa, Google reaches about 30% people and average page views per person approx 6.

Then based on the mathematical equation 1,407,724,920 x .30 , there are about 422 million users of Google. And assuming that each person visit 6 pages each and stay on each page for 2-3 seconds. So we have 422 x 6 x 3 = 7596 million or 7.5 billion pages per second on Google. So you have 250 x 5 x 5 = 6250 million page seconds on Google. A standard size monitor could take up to 80 watt hours according to Michael Blue Jay and converting it to watt seconds we have 10 to 15 watts per second in approximation. That means 62500 million Kilo Watt Second saved. That means 62,500,000/3600 = 17,361 Kilo Watt Hour electricity saved.
That’s a real saver. The original idea was proposed in this Blog.