Poland does have lots of salt under it, which bodes well for hydrogen storage in solution-mined caverns.
Because of Poland's unfortunate renewable position, it's understandable that nuclear is still strongly considered there. But that's not really going to help Poland compete globally against countries with better resources. If solar can provide power for $0.013/kWh in UAE, it's tough for Poland's heavy industries to compete with that with more expensive nuclear.
Oh I wouldn't say nuclear has been strongly considered here - the renewed interest has come only with the recent situation. If anything we've been severely lagging on this front. We have zero nuclear energy.
I would clarify that the domestic political discourse in Poland has instead been about discrediting the notion of climate change altogether and pushing to become even more dependent on non-renewable energy sources like coal. Most of our efforts in non-renewables are riding on EU funding, and the view of that is even more cynical.