It actually sounds like a great idea, but I don’t think that type of system exists as you described. Probably because it wouldn’t benefit the electric utility companies directly. I’m wondering if you did manage to make your own system like that if the POCO would even let you interconnect it to their grid system without their approval.
If it on the owner's property, would the PoCo even have any say in it? Assuming the owner's electrician does not have to break any PoCo seals to perform the work safely. As it stands right now, the owner can manually turn their optional load on and off manually. All they want to do is automate the process. All they are doing is replicating the PoCo energy meters' information and using it to control loads.
