Have a look at this study for a tokamak-based system: "The cost of the fusion-specific technologies accounts for approximately 75% of the total direct costs of

Have a look at this study for a tokamak-based system: "The cost of the fusion-specific technologies accounts for approximately 75% of the total direct costs of constructing the plant" [0] They also conclude that "The model levelized cost of electricity was found in the amount of ∼160 $/MWh." Note that 57% of that cost is due to depreciation of the hardware, and another 23% is replacement costs for materials damaged by the neutron radiation. Another source says: "Setting the capital cost of the fusion-specific technology to zero results in a LCOE of 72 $/MWh, which borders current prices for renewables, but is clearly physically implausible."[1] [0] https://www.sciencedirect.com/science/article/pii/S0360544218305395 https://www.sciencedirect.com/science/article/pii/S036054421... [1] https://arxiv.org/abs/2101.05727 https://arxiv.org/abs/2101.05727