We need to drive down the cost of dealing with nuclear waste. Possibly to zero, because that is a cost that will have to be paid basically forever.

Between 1961 and 2023 «5,600 TWh of electricity were generated from nuclear energy in Germany». [1]

Every year Germany spends (and will have to spend until the end of time) at least 2 billion Euros just to keep the existing nuclear waste safe [2] (more than half of the yearly budget of the ministry of the environment and about 0.5% of the yearly government budget). That's a drag. Think about it: it's all unproductive money, that does not produce any new energy, and stopping these payments will cause irreparable damage to the environment. Forever.

[1] https://kernd.de/en/nuclear-energy-in-germany/ [2] https://www.bundesumweltministerium.de/ministerium/struktur/...