Google is currently testing a new option in Chrome with the aim of improving the autonomy of laptops. It is called “Quick intensive Throttling after loading”.
According to Google, the gain in autonomy is around 10% with the new option, which is not negligible. Also, the group has done some tests and says they have not noticed any particular problems.
The Quick intensive Throttling after loading option is currently available with the Dev and Canary versions of Chrome. If you have either and want to test the option, enter chrome://flags/#quick-intensive-throttling-after-loading in the URL bar and choose Enabled from the drop-down menu on the right.