Except throughout the history of nuclear power it has always gotten more expensive, regardless of time period, learning curve, adoption curve, or any other variable you care to consider. Solar, wind, and batteries have always gotten cheaper and continue to do so.
Then look at the data. Vogtle was just completed for over $30/watt. You could build solar with 16x the nameplate capacity and 24 hours of lithium battery storage to make it baseload for that same amount.
The fact that you are even considering CSP shows you know nothing about the current state of renewables. What's more likely is you're parroting or copy-pasting some bullshit talking points from a right wing think tank. Nukes have ALWAYS gotten more expensive. I'm waiting for any production plant SMR, MSR whatever to buck this trend but it hasn't happened.
The nameplate cost of this plant is $32 per watt. Even at smaller scales, utility-scale solar plants are $1 per watt. Do you know how many grid storage batteries you could buy with the extra $31 per watt? (6 hour storage is around $2.50 per watt or $.40/Wh.) You could build a solar plant 4x the nameplate capacity of the nuke (in order to match the capacity factor), and add 24 hours of storage to make it fully dispatchable, and still have enough money left over to build 2 more of the same thing. This doesn't even include the fact the nuclear has fuel costs, waste disposal, higher continued operational costs, and unaccounted publicly involuntarily subsidized disaster insurance.
Except throughout the history of nuclear power it has always gotten more expensive, regardless of time period, learning curve, adoption curve, or any other variable you care to consider. Solar, wind, and batteries have always gotten cheaper and continue to do so.