Would it be possible to produce power, using He-3 and today's fusion reactors, that could be put into the grid? The first thing to note is that fusion reactors -- producing commercial electricity -- are not ready yet.  We are still researching how to make this technology work in an economically and efficient way.  The first true fusion power stations are probably 30 years away. All our work is focussed on making a future power station based around the Deuterium-Tritium fusion reaction.   This releases energy in the form of fast neutrons -- and many of the technology issues we face are around the capture of the these neutrons, extraction of their energy to heat water and drive a steam turbine to generate electricity.  We are, of course, aware that there are other possible fusion reactions -- and some of these involve He3 -- but the best prospects seem to be with D-T reactors at present. In the future other fusion reactions may be considered (D-He3 or D-D) once we have D-T reactors sorted out.