Like solar & wind, nuclear also needs supplementing with peaker plants. Nuclear can be used for peaking, but current designs cannot, and nobody is going to pay the crazy costs of nuclear just to have it idle 23 hours a day as a peaker.
And storage for renewables is a last resort. Instead of storage:
1. build in areas with reliable winds (offshore trade winds)
2. better interconnection ("the wind is always blowing somehwere")
3. over-provisioning. If you build 3 times as much wind power as you need, it's still a lot cheaper than nuclear and you need a lot less storage.
4. storage. It's expensive, but if you did 1-3 correctly, you don't need much of it.
Nuclear is safe, but it's also crazy expensive and takes decades to build.
And storage for renewables is a last resort. Instead of storage:
1. build in areas with reliable winds (offshore trade winds)
2. better interconnection ("the wind is always blowing somehwere")
3. over-provisioning. If you build 3 times as much wind power as you need, it's still a lot cheaper than nuclear and you need a lot less storage.
4. storage. It's expensive, but if you did 1-3 correctly, you don't need much of it.
Nuclear is safe, but it's also crazy expensive and takes decades to build.