Hi Geof.
Yep, comms is the big issue. PV has become so inexpensive now compared to the bad old days (and getting cheaper still all the time) that having adequate power on site is a relatively minor issue.
With cellular providers randomly bumping their links and not providing any way to automatically reconnect, it will usually mean a long drive is required to restore service to most "remote" sites.
It's not just a matter of a controlled power cycle, because there will always be at least one application - and usually multiple applications - that will require intervention that cannot realistically be scripted.
Maybe a satellite Internet service with sane charges and allowances will appear one day...
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