There are plenty of places already doing a mix of renewables with in-fill from batteries and transient gas generation and it works just fine. eg. South Australia. No coal or nuclear is needed and the gas is gradually being phased out in favour of other renewable sources.
Are you talking about wind mills and solar? They won’t supply enough power and have other draw backs. Everything has pros and cons.
Nuclear is consistent, safe and affordable. We have been using nuclear power for 50 years with few issues.
There are plenty of places already doing a mix of renewables with in-fill from batteries and transient gas generation and it works just fine. eg. South Australia. No coal or nuclear is needed and the gas is gradually being phased out in favour of other renewable sources.