A month ago, Opera introduced new feature in their web browser desktop application, i.e. the power saving mode. According to data published by them, this feature provides 49% longer battery lifetime. The difference between the Opera without power saving mode and the newest Chrome is insignificant, i.e.only 3.5%. However, no only Opera is working on this aspect.

This is very surprising for me, but Microsoft also cares about the power consumption. A lot of improvements will be introduced in Windows 10 Anniversary Update:

  • lower power consumption by background tabs: Edge will execute background JavaScripts only once per a second,
  • Flash objects will be run as separated processes, so the resource management will be more efficient,
  • user interface animation will consume much less of GPU power,
  • new networking features (TCP Fast Open, Tail Loss Probe and Recent Acknowledgement) will cause that your computer will send less packets, so the WiFi module will consume less power.

These all power consumption improvements were described in details by Brandom Heenan on the official blog. This is generally very good information, but I hope that at least some of these changes will be also beneficial for other web browsers and network application.

Microsoft has published a video which compares the battery lifetime during video streaming scenario.

The Opera has published similar video 12 days before Microsoft, but they have performed more real life test scenario.

The Opera has published similar video 12 days before Microsoft. On this video, you can see that the Opera’s battery feature gives over 70% longer battery lifetime. So, this result is much better than in their initial test. Very important information is that Opera’s native ad blocker was enabled. Opera says openly that this feature gives a lot.

At the beginning, Opera did not test battery lifetime with Edge browser, because this application is only available on Windows 10.

So, they have performed several tests after Microsoft publication. It turned out that Edge consumes less power than Google Chrome browser (10% longer battery lifetime). However, the best result was achieved by Opera’s battery saver and native ad block features enabled (22% longer battery lifetime than the Edge). Hover, these results are estimated, because the test was running only 2 hours. They have calculated the final result using a simple formula. You can see all test details (including the automation script scenario) on the official Opera blog.


In my opinion, Microsoft have not enabled Opera’s native ad blocking feature. Also, Microsoft did not publish any test details. In this case, Opera’s developers are more transparent and it is possible to repeat their scenario.