It seems hard to build a working Fusion Reactor.
However, all around on earth you can observe free energy ball lightnings, originated by
the interference of Electro Magnetic multiple ( min. 3x) discharges of lightning
( according to Q-FFF Theory).
see also: and:What is Wrong with Current Physics,to Explain Ball Lightning.
Below: Small hotspot interference black hole ball lightnings, are observed already inside the Tokamak.
However the hotspot black holes in the Tokamak remain always unstable if there is no continuous input of focused EM strings or laser Strings.
Laser strings seem to be more efficient to focus by lenses on one point such as inside the NIF at Livermore USA. (below) see the tweaked hotspot , as the first interference micro black hole.
Below: the evidence for the BL string knot nucleus.
An unstable Ball Lightning nucleus (at the pole) of compressed strings can split and survive for a while, after felling through a tree. to the ground.