> There is something to be said both financially and emotionally about getting your operating costs to be lower. I agree. I have a battery backup system too fo

> There is something to be said both financially and emotionally about getting your operating costs to be lower. I agree. I have a battery backup system too for similar reasons. However, I think that the operating cost savings start diminishing pretty quickly when you have to size a system to go completely off grid and simultaneously can't tolerate a higher outage rate. That said, if you take the customers word, it sounds like Tesla Solar gave them the impression that they would have 100% off grid up time and didn't deliver on that due to their own inadequate equipment.