I’m surprised that’s still around. Is the average age still 14 on these networks?

Try OrganicMaps. It’s the best OpenStreetMaps backed app I’ve ever used, and I’ve tried almost all of them for 10 years now.

Physical shutoff via relays is required by the standard. We’ve just been through a scandal where a manufacturer skimped out on putting them in and had to recall the devices.

Yes, because the frequency of the grid is also a trigger for shutting off the inverter. Inverters generate a frequency which indicates a “non healthy grid” that trigger the shutoff of connected inverters.