I have solar system with a Powerwall 2 already installed on my home. I contacted Tesla to add an additional Powerwall 2 battery to my system. When I requested a quote on-line from Tesla they provided an out of pocket coat of $10252. Tesla give me an estimate of 2 to 4 week to get a final design and cost about 3.5 weeks in the process they came back with estimate of $16xxx.00. Tesla Poject Advisor said this was only an estimate and I would get a final once they had a final design. We are now starting the 10th week into this project and I still do not have a final design and cost. I can't find a number for any manager or supervisot to call! The few times I have gotten any communication back from the Project Advisot Grp they just say work in process. I have been very happy with my 1st Powerwall 2 that was installted by Sunrun. My recommendation is not to do business with Tesla directly for any solar products. You can not contact Tesla via phone nor will the Project Advisor pass you to a Supervisor/Manager.
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