You might think so but this is the nuclear energy industry - where building a plant typically takes at least a decade (or not-uncommonly 2 decades or more). In fact, this is currently the most modern production reactor design in the world.

It's an EPR[1] - a third generation reactor design. But so far it's been plagued by massive cost and schedule overruns and of the two reactors of this design to become operational, Taishan 2[2] has already been taken offline after less than a year in order to investigate problem with the fuel rods.

[1] https://en.wikipedia.org/wiki/EPR_(nuclear_reactor)

[2] https://en.wikipedia.org/wiki/Taishan_Nuclear_Power_Plant