Hi,

As many here are aware anti-matter/matter reactions produce a vast amount of energy. Unfortunately there are many obstacles preventing us from utilizing this form of energy including:

1.) We are unable to efficiently produce large quantities of anti-matter.
2.) We have been unsuccessful with long term storage of anti-matter.

This is an interesting article: http://www.physorg.com/news/2011-05-cern-scientists-confine-antihydrogen-atoms.html

Although it looks like we have a long way to go... indefinite storage of anti-matter could be right around the corner.

-TheArchitect