Yes, over regulation leads to massively spiraling costs as delays lead to financing issues (both interest and uncertainty), knowledge loss, project management timing issues, etc etc

And yet even with that you're getting 400 billion kWh over its 40 year lifespan for €13 billion construction costs (multiply by 1.5 for lifetime costs), for electricity production price of €0.05 per kWh. Which is honestly decent.

Btw: did you actually do the calculation before posting?