Currently zero, because the necessary lasers are just now becoming available. In theory, they've got a kJ laser to generate the magnetic field, a 30kJ laser hi

Currently zero, because the necessary lasers are just now becoming available. In theory, they've got a kJ laser to generate the magnetic field, a 30kJ laser hitting the fuel, and a GJ energy output, for Q over 30,000 minus whatever losses you have in the lasers and electricity harvesting. https://aip.scitation.org/doi/10.1016/j.mre.2017.05.001 https://aip.scitation.org/doi/10.1016/j.mre.2017.05.001