$0.
Pool ownership is a great reason to go PV solar. I no longer have electric bills and run my pump and SWG and solar pool heater as much as I want to, whenever I need to. I can ignore off-peak hours and all the other billing/time-period non-sense that other pool owners have to honor. I can use my appliances anytime I want. Run my pool pump and solar heater all day long if I want. Lots of AC, no problem. If building a pool, I'd consider the cost of PV solar as part of the project.
I think I remember about $50 a month, back when I was paying for it. Our pools and equipment are similar. It might have been less, I doubt it will be more, for now. But PG&E owns California's PUC, so don't expect your current projected costs to remain that way for long. Another + for solar. PG&E will probably eventually impinge some sort of minimum charge increase on all us solar owners (even though we were promised that won't happen). But even if they do, it'll be a very small fraction of what the rest of you will be paying for electricity in CA in the coming years. I'm overproducing so far, so I use that credit to pay the current minimum charge. I literally pay $0 for electricity (that's for all of it, not just the pool).
Is Seminole in CA? We have one. Or are you in FL? (You might add that to your profile.)