Yes, that makes sense to me, and I totally agree.
My comment about the Jackery battery was more in reference to the original poster (Alto Nimbus) who indicated their "total monthly" usage was 2kWhrs (and yet it appears they have a 13.4 kWh capacity PW for backup to cover their 66 watt hours of daily usage - actually the profile pic shows 4 PWs). I think my phone uses more than than 66 watts each day.
Anyway, Alto Nimbus wrote that might be why Tesla is "covering up" and not reporting on this data since it might slow down PW orders. It sounds like Tesla will be adding back that data point, and also maybe Alto Nimbus didn't have a good financial use case for a powerwall given such minimal household loads - yet was questioning the value based on their very "edge case" load scenario for their PW installation, and postulating that their edge case scenario would imply a reason for slowing down PW orders (i.e. demand for PWs). Something is not making sense to me with the original posters scenario or numbers, and then resulting derived implications.
Yet the vampire drain numbers from some of you is very informative, something I'm waiting to see for my system, where I have 4 PWs installed, just not turned on yet by the utility. Unlike the original poster in this thread, my household peak usage in summer in Arizona can get close to 3600 kWh's and AC is not optional and we have an electric car. I had assumed about 3-5% vampire drain, which was acceptable because of the huge cost savings given my utility companies crazy rate plans, and demand charges during peak - which I'll be avoiding entirely with the PWs.
At least in my area, the Tesla guys that wrapped our installation last week said they can no longer keep up with the PW install requests now that Tesla has apparently caught up on battery production for cars, that they can now spare batteries for Powerwalls and seem to be cranking them out for installations.
It sounds like to me Alto Nimbus is in pretty good shape, and with 4 Powerwalls (54kWhrs of backup, for 2kWhrs of monthly usage) can run their entire house for the entire duration any time they have one of those 24 month power outages. But still, it sure is a bummer about that vampire drain
- I'm just not sure that's quite the right part of the equation to be worried about here, in Alto Nimbus's case.