There are many studies which showed how much overprovisioning you need to go to 100% renewable with different size grids. None of these are outrageous, but it's

There are many studies which showed how much overprovisioning you need to go to 100% renewable with different size grids. None of these are outrageous, but it's also nothing we currently need to think about. We can easily scale up renewable capacity to 70% without significant overprovisioning. So we really just need to build lots more renewables at the moment.