Utility limiting system size. Thoughts on partial-energization.

I don't think it was mentioned, but other than the cars is battery storage involved? If the PoCo is concerned that the customer can backfeed more then they're expecting, can that be limited with filling up the batteries? (Does get back to the "How much money are we losing?" question from the PoCo.)
Was thinking the same thing. The OP in Texas this might be a good thing. But also might want to investigate a system that will function in island mode as well as net metered for POCO outages.
 
Texas is a pretty low regulation state I wonder if your customer could just form a Power Generation Company (PGC)?
Then your customer is a electric generating facility that produces electricity for wholesale sale.
They might need a ERCOT Registration (Resource Entity - RE).
https://ftp.puc.texas.gov/public/puct-info/industry/electric/forms/pgc/pgc_inst.pdf
Not real serious advice but it would be funny if somone did that.
In Texas, outside the major cities, and outside the major municipal utilities, it's still the wild, wild west. Policies differ among each of the REPs, and you can switch REPs whenever you want or whenever your short-term contract is up. Some REPs have a PV capacity limit, some don't have a PV limit, but overall, there is no net-metering laws here, so you're mostly selling your excess at the RTW (real-time wholesale) rate. I've seen TX electric bills posted on Reddit showing an average RTW solar buyback rate of 1.5 cents. There are some perks, like Octopus Energy will pay customers $4 per month per kW of BESS capacity you have, only if you provide them full control to your Enphase or SolarEdge battery. For customers who have solar PV in addition to BESS, I don't see this being a perk, because you're better off controlling your own battery and setting it to full self-consumption mode, to maximize your daily solar production.

Yes, my profile does say I live in Texas, and I do, but the customer I am writing about lives in St. Louis, MO., in a state-regulated utility - Ameren (MO).
 
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