Seeing as the Sun is a giant fusion reaction already why try to reproduce star power on the surface of the earth when we have unlimited access to it in the sky? Trying to produce a sustainable fusion reaction on earth won't end well. What we need to do is blanket our uninhabitable areas with solar panels and cable that energy to our grids. The big suits of the energy-industrial complex won't let it happen and have been actively working against renewable power sources for a few generations already. Solar power to its potential, along with geothermal and wind power, would be the end of Big oil and the nuclear,coal and nat-gas industries.