Not sure if joking or just ignorance? Both?
- The nuclear capacity losses are because of environmental regulations, not because of inherent issues with nuclear.
- Regulations restrict discharge of cooled water above 30°C into waterways, and they are responsible for the riverway temperature downstream of them. Since the waterways are warmer during a heat wave and the nuclear plant is responsible for the temperature of that waterway, they cannot discharge as much warm water into that waterway.
- Solar doesn't work at night, and sufficiently scalable energy storage technology doesn't yet exist.
- Solar loses considerable capacity as ambient temperature increases. At 40°C ambient, you're talking about a 15% or higher reduction in efficiency. Which would be HIGHER than the ~12% reduction in nuclear capacity Europe hmis seeing