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Steam.

The actual problem is reaction vessel wall ablation.

This is one of the reasons General Fusion, mentioned in the article, uses a liquid metal reaction vessel, spinning to create a cavity. (I think a mixture of molten lead and lithium?)

Yes, incredible idea. I really hope it works out.

Steam is uneconomical versus solar power. If all the fusion is doing is heating water it will always lose on cost even if the fusion was free.

c.f. coal. The bulk of the cost of a coal power plant is the steam turbine etc. And coal is not economical.

My city has a steam/hot water distribution network. No need to convert to electricity for quite a lot of residential energy usage.

Well, we could always just set up solar panels and use it to capture output from the massive fusion reaction 8.5 light minutes away from us. Does that count as a successful utilization of fusion?

> Does that count as a successful utilization of fusion?

In the way a fire is a steam engine.

Use a Bohrium blanket to absorb the neutron bombardment.