Uranium is $128.30/kg
After enrichment, conversion and fabrication that’s $3400/kg for 4.95% fuel.
At 36-45MWd/kg and a net thermal efficiency of 25% or $12.5/MWh up front.
With a 90 month lead time (72 month fuel cycle and 18 months inventory) at 3% this is $16.2/MWh
It arrived over the last 5 years.
Additionally diurnal storage is required for nuclear to meet a variable load anyway (as an 8hr battery is $2.5/W vs $20/W for additional reactor capacity). So the comparison then becomes building the nuclear reactor to run at <25% load factor vs. filling the rest of the load with any other method.