Poland has test nuclear reactor: https://www.ncbj.gov.pl/en/maria-reactor
We were building NPP based on VVER reactors: https://en.wikipedia.org/wiki/%C5%BBarnowiec_Nuclear_Power_P...
We're going to build at least one, the planning phase is rather advanced and real building is expected to start in 2026, with completion expected in 2033-2035.
https://ppej.pl/en/news/information-on-the-status-of-field-w...