Hackers gained access and threatened the integrity of the U.S. power grid. (U.S. Electrical Grid Attacked by Hackers)
This kind of vulnerability raises continued concerns about having an electrical infrastructure that is centralized. Researchers at MIT have developed an energy technique that would allow every household to produce its own energy. The process is cheap and can convert about a gallon of water into enough hydrogen and oxygen to power a fuel cell that would cover the energy needs of a typical home and automobile for a day. (See Turning Water Into Energy)