Board Thread:General Discussion/@comment-111.68.32.71-20131007122233/@comment-209421-20140417021118

That was my thinking. Yes, energy weapons require a lot of power to be practical, BUT we haven't seen the full extent of the technology we have to work from. Penny already proves that there's more to the universe that meets the eye, thanks to her weapons and, well, I'll be blunt, near-robotic nature. To assume that they don't have Dust-batteries capable of powering a laser rifle or something similar is a mistake, IMO.