@tcook my old CyberPower doesn't even like the 60Hz the solar inverter puts out. If I'm off grid at night, it doesn't mind the powerwall inverters at least. The bigger issue I have is the handling the surge if grid power goes down while solar is generating and the transfer switch flips. I have to reset my HVAC and Range each time so far. Tech came out to install PGE solar monitor and he found a few loose wire clamps so hopefully that fixes it next time 🤞