The electricity may be up to 40% more expensive. It is very starry-eyed to think than only building an additional block in the nuclear power plant in Dukovany will solve the problem, as it was told during the Investment Forum 2020 by Michal Šnobr, the analyst and the minor shareholder of ČEZ.
Read more information here:
https://www.seznamzpravy.cz/clanek/snobr-ohledne-ceny-noveho-jaderneho-bloku-stat-lze-a-podvadi-85940
https://www.welt.de/wirtschaft/energie/article181267192/Keine-Versorgungssicherheit-Ganz-Europa-geht-der-Strom-aus.html