Ah, yes it does. They are called electrons. Electrons are fungible.
Awesome! How many of those solar electrons still getting pushed around after sunset?
But it doesn’t matter when or where they are produced,
Doesn't matter when? So if you produce 20% more solar than you need on Tuesday, and then none on Wednesday, Thursday or Friday, you'll still be okay until Saturday?
you get “your electrons back“ figuratively in the form of a credit when you need them.
You get them back? Like from a coal, nat gas or nuke plant generator?