Yeah, we have that in California and you “true up” at the end of the year.
I have a friend who has solar(had) on her roof and her true up was $6,000.
Turns out her solar system had failed with no realistic way to fix without incurring more out pocket costs to the tune of thousands.
It had been off for a couple of years so, she had the roof replaced and got a new solar system.
The company that installed it gave her a new bill of $251, no increase and informed her that the “true up” would be about $200-$300 based on her current usage, which indicated that without solar her bill would be 700-800 per month.