Actually its energy from Bacteria eating the sugar in the waste water from brewing beer.
Yahoo Serious would be proud :lol:
http://news.yahoo.com/s/ap/20070502/ap_on_sc/australia_beer_power_5]Beer maker, scientists to create energy - Yahoo! News EDIT: CANT LINK URL, TRY COPYING LINK
The link don't work for me.
But for the story, this is just proof of the greatness of beer.