The customers may not, but the energy utilities themselves should be able to do so because they have to have enough constant baseload power to always power the grid no matter the circumstances. Renewables by their nature usually aren't factored into those baseload calculations because they can be fickle.
I've not seen the actual update though. Was it just a, "Hey, we don't have the ability to solely power the state with renewables." announcement or a legitimate, "Hey, we don't have enough baseload power to keep the state running at all."?