Your own personal power plant, called a fuel cell, could run your lights, your appliances, your air conditioning. That concept is still a long way off, but fuel cells do exist and have been used to power the space shuttle. Shortly, some cars run by fuel cells will be on the road. And in a handful of years, perhaps a fuel cell could power your home.
Fuel cells are similar to a battery with a fuel tank.
As long as there is some form of hydrogen, the cell can create electricity. One reason for fuel cells' recent rapid development is because traditional power plants aren't as efficient in their use of fuel. Put the power where you need it. The fledgling fuel-cell industry has accelerated in the past two years. Too bad you can't buy one.