Tesla Motors Club
Hey all,
I'm getting ready to take the plunge into solar and am trying to wrap my head around the exact configuration of the system. The initial quote was for a 9kW system installed with 25 360W SunPower panels utilizing a SolarEdge 10k inverter and one PowerWall with a critical load panel.
Through all my quotes, I only asked for one battery as most installers offered LGs. When an installer offered a PowerWall, I said great! When he said I could add on another, I said even better, because Maryland offers incentives for energy storage.
I reached out to my sales rep and asked about adding a second power wall, eliminating the critical load panel and going whole house. For reference, my meter and 200A main panel are separate, the largest breaker I have is a 60A for the emergency resistance strip heat, which I realize is the max load of a PW output. I was told that no, we'd still need to do a critical load panel because even the pair of PowerWalls wouldn't be able to cover everything. I figure I'd just wait for the site survey to discuss it in more depth.
I got a call today from the gentleman who will be overseeing my project. I take the opportunity to rehash the conversation I had with sales, and again, he generally implied that doing a whole home backup on two PowerWalls wouldn't work, and that I'd have to do a critical load panel OR some sort of active load shedding. He also pulled up my file, saw the 10k inverter and said "oh, a single PowerWall can't handle that, we'll need to drop that to a 7600." I asked if two PowerWalls could handle the 10k, and he responded that I'd need two inverters.
So can someone please fact check this for me? I've read as much as I can on the forums, I've read numerous Tesla documents found online, and I just keep coming back to this picture of an inverter and PowerWall feeding a main panel, feeding the gateway feeding a utility meter.
Thanks, sorry for the long-winded post. I just hope to have all my facts straight for my site survey next week.
I'm getting ready to take the plunge into solar and am trying to wrap my head around the exact configuration of the system. The initial quote was for a 9kW system installed with 25 360W SunPower panels utilizing a SolarEdge 10k inverter and one PowerWall with a critical load panel.
Through all my quotes, I only asked for one battery as most installers offered LGs. When an installer offered a PowerWall, I said great! When he said I could add on another, I said even better, because Maryland offers incentives for energy storage.
I reached out to my sales rep and asked about adding a second power wall, eliminating the critical load panel and going whole house. For reference, my meter and 200A main panel are separate, the largest breaker I have is a 60A for the emergency resistance strip heat, which I realize is the max load of a PW output. I was told that no, we'd still need to do a critical load panel because even the pair of PowerWalls wouldn't be able to cover everything. I figure I'd just wait for the site survey to discuss it in more depth.
I got a call today from the gentleman who will be overseeing my project. I take the opportunity to rehash the conversation I had with sales, and again, he generally implied that doing a whole home backup on two PowerWalls wouldn't work, and that I'd have to do a critical load panel OR some sort of active load shedding. He also pulled up my file, saw the 10k inverter and said "oh, a single PowerWall can't handle that, we'll need to drop that to a 7600." I asked if two PowerWalls could handle the 10k, and he responded that I'd need two inverters.
So can someone please fact check this for me? I've read as much as I can on the forums, I've read numerous Tesla documents found online, and I just keep coming back to this picture of an inverter and PowerWall feeding a main panel, feeding the gateway feeding a utility meter.
Thanks, sorry for the long-winded post. I just hope to have all my facts straight for my site survey next week.