It’s more expensive to use them all day: that’s the problem facing power plant owners where renewables are so much cheaper that they break the economics for power plants which were designed to run continuously but are more expensive when wind and solar supply is limited.
(That’s the answer for the northeast, too: New England has no shortage of wind all winter long and batteries don’t care where the electricity comes from)
(That’s the answer for the northeast, too: New England has no shortage of wind all winter long and batteries don’t care where the electricity comes from)