Macbook Pro 13 Retina battery drain using Chrome browser
Chrome does not consume more energy than the other browsers in this test.

I just ran a comparison.

The set up was to have same amount of demand.

Three tabs were open, one tab streaming online video in both, Chrome and Firefox (I do not use Safari).

In Energy consumption profile below, Chrome was equal to Firefox.

Of course the Energy consumption is very much dependent on the particular web site.