Mayor Bloomberg of New York City just announced that they are going to use these Microturbines for apartment buildings. They can run on natural gas, waste gas, biogas, as well as liquid fuels. They require no oil or lubrication to run.
Why can’t every city use these? This will help cut greenhouse gases and cut back on our dependency on foreign oil.
Youtube clip on these turbines
http://www.youtube.com/watch?v=WmBNtoXFX5owebsite
http://www.capstoneturbine.com/