I think the variability of a lot of renewables is why grid-scale energy storage projects are taking off (e.g. http://www.independent.co.uk/news/business/news/te

I think the variability of a lot of renewables is why grid-scale energy storage projects are taking off (e.g. http://www.independent.co.uk/news/business/news/tesla-south-australia-renewable-energy-worlds-largest-grid-scale-battery-a7828171.html http://www.independent.co.uk/news/business/news/tesla-south-...). With a decent quantity of storage and good interconnects to shift power from areas of high generation to other areas, it seems possible to balance out some of the issues you're referring to.