This link has an image with black dots where the power points are:

http://www.seatguru.com/airlines/Qan...irbus_A380.php

For more, have a look at the AFF post:

http://www.frequentflyer.com.au/comm...tml#post225873

Also, Exit rows and bulk heads do have in seat power. To find the plug, the TV monitor must be out.