Earlier quoted context omitted.
It is! The easiest design is to require existing grid stable power and supplement it. :) Anything else is difficult to do reliably, and would generally require some kind of smart monitoring system, electrically actuated mains rated switch (not easy, cheap or durable it turns out), additional sensors, etc. The design we're talking about just doesn't output power unless there is an existing sine wave to follow. Pretty…
I’m typing this from a computer I’m holding in my hand that’s more powerful than the ones used to put men on the moon. A box with three connections - grid, solar, and house (four if you have a battery) with sensors and disconnects and the smarts to not backfeed and electrocute linemen just doesn’t seem impossibly complex. Especially when we’re talking about home solar installs, which cost several thousand dollars to…
Because that’s the typical rating for a new residence in most areas in the US (200 amp x 240 volt).
Is your handheld device rated to last 20+ years in an outdoor environment?
Because that’s what you’d need.
But don’t worry, just the switch itself is only about $700-800 without labor, installation, or maintenance - [https://www.electricgeneratorsdirect.com/Generac-RXSW200A3/p...]
Add in all the other stuff and an extra couple thousand to the cost of the solar installation is why it isn’t as common. Because most people don’t care enough to pay the extra amount. Some do.
If you wanted it enough to pay the extra, most electricians wouldn’t mind adding it in I’m sure.