Chrome's impact of rMBP battery life...

I just got a new retina Macbook Pro 13". I'm somewhat stunned that with Chrome (and only Chrome) open, with a few tabs (2 Google Doc, and Gmail), brightness at half of maximum, the battery projections are terrible. At 100%, I had 7:30 remaining, and by 92% it has come down to 7 hours.

Does Chrome really draw so much power, or is something wrong with the machine I got?