Not the poster but Tokamaks reactors makes energy for maybe 50 minutes at a time before it has to be shut down. This is due to it's 2D magnetic fields. While S

Not the poster but Tokamaks reactors makes energy for maybe 50 minutes at a time before it has to be shut down. This is due to it's 2D magnetic fields. While Stellarator reactors use 3D magnetic fields in a modulus loop which can have a continuous energy output.