[barney54]

Load following is a technical issues--nukes are limited in the amount they can load-follow. But winds cannot load follow at all and solar can help some, but doesn't necessarily help cover peak daily load. For example, yesterday in California the system peak load was at 5:49 pm, but solar PV peak was at 9:44 am. data: http://content.caiso.com/green/renewrpt/20151102_DailyRenewa...

Nukes aren't great for load following, but they can load follow some--which is better than wind and solar. To really load follow, you need hydro or nat gas turbines (though nat gas combined cycle can load follow).

[tempestn]

Another possibility would be to add massive storage to the grid. Maybe it's pumped hydro or this kind of thing: https://news.ycombinator.com/item?id=8646787. Or perhaps more realistically, if someday soon there are millions of electric vehicles connected to the grid at any given time, especially during current off-peak hours, that storage could be leveraged for load shaping.

[filmor]

Most wind turbines can be regulated very fast in negative direction, i.e. you can change the angle that the blades have to the wind to reduce the force. This is needed for the turbine to survive storms but it can also be (and is) also used to "help the grid".