[Shop-talk] PV system

[scott.hall at comcast.net]

wait...that never came up.  so you're saying that when the utility loses power (like they're wont to do here) I'm down, too, even with the PV system.  nobody mentioned that, and we got fairly involved in discussions.  that was a major bennie as we lose power here all the time and the PV system would at least power the a/c during the hottest parts of the day.

 -------------- Original message ----------------------
From: Roland Wilhelmy <rwil at sbcglobal.net>
>  a synchronous inverter, which is used in grid-tied systems, requires
> a 60 hertz signal from the power company in order that its power
> matches the phase and frequency of that in the lines already.  So when
> the power goes out around the PV equipped home, that home loses power,
> too.  No free lunches with your subsidized system :-)