'Artificial sun' sets record for time at 100 million degrees in latest advance for nuclear fusion

[Old Crank]

17. Let's assume we can keep this reaction going.

The 48 seconds of fusion produced more energy than was put in.
A certain amount of the output will have to go back into the system to keep it running. But we will need to transmit and or store the excess somehow. That will require much more in infrastructure upgrades to handle that heat.

That is the next issue.