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> At the moment fuel costs in fission are like 5-10% of total costs for a fission fleet.

Yeah and with a breeder fission reactor we could reduce this to below 1% probably. With a thorium breeder the fuel cost might be essentially 0%. In the vision of Alvin Weinberg you literally just drop some thorium into the fuel salt every once in a while.

But the real issue for nuclear energy is currently capital cost and time not fuel cost. And capital cost can go down massively with GenIV reactors as well.

So I don't see how fusion will be cheaper.

> In fusion it could be lower

But eventually you have to start breeding tritium, so wouldn't that make it more expensive.

> Disclaimer: I switched from studying fusion energy to advanced fission 16 years ago.

Awesome, we desperately need GenIV reactors (even if I dislike that term).



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