Focus Fusion is a form of fusion that uses repeating large pulses of electricity to form a collapsing microscopic plasmoid donut to fuse hydrogen and boron and shoot the resulting beam of alpha particles (helium nuclei) through a coil of wire and create electricity in the twenty megawatt range.
UNITY is when they produce more energy than they use. They are extremely close to doing so right now.
The apparatusis the size of a two-car garage or boxcar and requires little shielding, since it produces extremely small numbers of neutrons, the bad guys in regular fusion devices. It also captures and converts the x-rays produced into electricity.
They've actually done this, have pictures and detailed processes and patents. Their webpage has been viewed a half-million times already, and is under heavy revision daily.
This could be the the alternative energy source Al Gore hasn't heard about or invested in... we shall see.