Don't let the deliberate sabotage by german politics distract from the necessity and ability to change the grid.

In a well interconnected European grid with extensive use of Offshore Wind potentials we can easily get there. It is not a lack of viability but a lack of political will. If you look at Germany, the largest donors to political parties are usually property investment groups and fossil (including nuclear until recently) power companies.

Putting nuclear plants at the cost comes with it's own can of worms. Corrosion, Floodings, Coastal stability... And in regards to the grid you run into the same issues like with offshore wind. Finally with the increase in temperatures through climate change the energy demand in summer will also rise, with the need to actively cool houses more and more. In the southern US, the grid usually fails in summer, not in winter.