I have Tesla solar and two PWs. My PG&E service is notoriously "glitchy". PGE does some sort of switching which will cause a momentary drop or spike in my service. Over a period of five years this caused a series of failures in audio equipment power supplies. Finally I installed line interactive UPS's on each unit. The line interactive UPS switch much faster than stand-by UPS's and now I have no problems. That's the background.
Today there was a power outage in part of my city, but it did not affect my home. But apparently it caused PGE to do some switching as referenced above. The odd thing is that they did this while the Tesla app showed my house was running on solar and also exporting to the grid. So as reported, I was not drawing any power from the grid. Yet several times my UPSs triggered to backup my audio and computer equipment. These were transients, less than a second. The drops did not trigger the PWs. Just long enough to trigger the UPSs.
So the question is, if my house was being powered by solar, with excess power going to the grid, why would a PGE glitch trigger my UPSs? If my house is 100% solar powered at that moment, how could anything PGE does cause a change in my house power?
Today there was a power outage in part of my city, but it did not affect my home. But apparently it caused PGE to do some switching as referenced above. The odd thing is that they did this while the Tesla app showed my house was running on solar and also exporting to the grid. So as reported, I was not drawing any power from the grid. Yet several times my UPSs triggered to backup my audio and computer equipment. These were transients, less than a second. The drops did not trigger the PWs. Just long enough to trigger the UPSs.
So the question is, if my house was being powered by solar, with excess power going to the grid, why would a PGE glitch trigger my UPSs? If my house is 100% solar powered at that moment, how could anything PGE does cause a change in my house power?