Slovenia has a history of getting into extremely expensive projects that become many times as expensive with time and taking many times longer as expected. This is a great project to repeat such history even without being specifically Slovenian. All the last nuclear reactors in europe have been delayed, some not even finished after decades.
Slovenia is a small country with only 2 million people that is not wealthy. If this projects is not heavily subsidised at the EU level at least with affordable loans and guarantees, and if this doesn't become a perfect model project of modern nuclear power plant construction, and if energy situation doesn't change in the time of the construction, , it's going to be extremely painful for all Slovenians for generations. Those are very big ifs. The risk is incomprehensible for this little country that has not even been able to make any significant update to it's outdated energy grid in the last 30 years. .