According to the study conducted by Center for Sustainable Energy Systems at Fraunhofer USA Inc., Internet Explorer continues to be the most energy-efficient browser on Windows 8. The study concluded that compared to Google Chrome and Mozilla Firefox, Internet Explorer uses up to 18% power.
Internet Explorer 10 exhibited the lowest energy consumption. In some scenarios such as playing Adobe Flash video on laptop PCs, it was 18% more energy efficient than Google Chrome, and it was 17% more efficient than Mozilla Firefox in playing HTML5 video.
To put that in perspective, if every Google Chrome and Mozilla Firefox user in the United States switched to Internet Explorer 10 on Windows 8 for a year, the energy saved could power over 10,000 households in the United States for that year.
Here is the info from Microsoft,
The 18% savings in energy consumption is significant. Consider that if every Google Chrome and Mozilla Firefox user in the United States used Internet Explorer 10 on Windows 8 for a year, they would save over 120 million kWh in electricity!
- This is enough energy to power 10,722 households in the United States for an entire year.1
- This would eliminate the release of over 85,000 metric tons of Carbon Dioxide equivalent in greenhouse gas emissions.2
- This is the equivalent of reducing greenhouse emissions by consuming nearly 10 million less gallons of gasoline.
- This is equivalent to the carbon dioxide removed by growing nearly 2.2 million tree seedlings for 10 years.
Microsoft focuses on several principles to lower power consumption with Internet Explorer:
· We focus on making Internet Explorer fast because the quicker a browser can perform an action, the less the power it will consume.
· We tap into modern PC hardware to accelerate Internet Explorer rendering because using the native graphics hardware decreases power consumption.
Source: Windows Team Blog