Without nuclear that would probably work the same as their current arrangement is working now. Germany and Denmark currently have the most expensive electricity on the EU.
Nuclear is the most expensive way you can think of to generate power, but the most expensive power plant unfortunately dictates the price on the energy market in the EU ("Merit-Order") [1]
The merit order article you have linked is typical lobbist brainwash as to why your country needs to depend on gas when the sun doesn't shine and the wind doesn't blow.