What are we going to do after all our nuclear power plants are decommissioned?

https://fanc.fgov.be/nl/dossiers/kerncentrales-belgie

Closing times for DOEL 1: 15/2/2025

DOEL 2: 1/12/2025

DOEL 4: 1/7/2025

Closing times for Tihange 1: 1/10/2025

Tihange 3: 1/9/2025

Tihange 1 randomly shut down today:

https://www.hln.be/binnenland/kernreactor-tihange-1-onverwacht-uitgevallen-geen-risico-voor-mens-of-omgeving~a78e4f54/

Edit:

Looks like FANC is a bit out of date, according to ENGIE; DOEL 4 and Tihange 3 will continue until 2035.

https://nuclear.engie-electrabel.be/nl/kerncentrale/de-kerncentrale-van-doel