I recently posted an item about the Focus Fusion technique aimed at achieving power generation from nuclear fusion. Back in February I poste about a  Lockheed-Martin fusion reactor project, which is also a fairly near term low cost approach.

Another alternative fusion scheme is the Polywell, invented by the late Robert W. Bussard. Here is a basic introductory tutorial on the concept: The Polywell 101 – Moonshots – Solve for X