The Fusioneers, who build nuclear reactors in their back yards
These are Farnswoth Fusors[1], first developed by Philo T Farnsworth, one of the inventors of television.The devices use about 100,000x more energy than they produce FROM FUSION (edit, thanks), but some fusion does occur. An individual ion can be heated by 11,000 kelvins with a single electron volt, so 15,000ev is enough to reach fusion temperature. The statistical challenge is getting ions to collide - overcome the (repelling) coulomb force - and fuse.There are discusson groups online for this topic [2] and there's even a high school in the Seattle area that has a fusor [3].[1] https://en.wikipedia.org/wiki/Fusor[2] http://www.fusor.net/board/[3] http://www.industrytap.com/overview-polywell/31940