My Chinese built inverter functions just fine without Internet, but I'd have to take over doing what Amber Energy are doing if I lost access to the cloud.
But that's residential scale: at grid scale these things wouldn't be online in the same way anyway.
and what if they can use your inverter to destabilize not only your netwrok, but the local grit as well? and how far it can go if sychrnoized with malicious intend?
Panels can be opened and are simple enough for a tech to bypass the encryption.
encryption isn’t gonna do shit to stop you from directly connecting to the anode and cathode on a panel. it would be incredibly trivial to bypass