So it seems that nobody has touched on a basic improvement that might cover a subset of folks use cases:
Can sense just sell an alternate set of CT’s that is rated for up to a 400a service but that plugs into the existing Sense unit?
Some folks will be able to find a way to get a single CT over one set of wires that carry the full load of the house. I believe that the most typical power company deployment is to have a single set of wires into the meter base and then typically off the customer side of the meter base there are two sets of wires in to two 200a main breakers. I think that some power companies may be willing to accommodate placement of the CT’s inside of their locked meter cabinet.
This would be great since it would work with the current Sense software and would only require different CT’s designed for higher amperages. It would also not require two Sense units to be purchased, installed, and maintained.
Granted it would certainly not work for everyone’s needs, but it would work for some without requiring much engineering effort.
To notes above about Sense seeing more demand over time for support of 320/400a services: I am guessing that more of them are being installed in high end homes these days especially in support of electric vehicles. I also suspect that the demographic with these 320/400a panels is very vocal in this community and it matches well with the typical Sense buyers demographic.
I don’t really know how I feel about having to buy two Sense units at $300 to deal with a 320/400a meter. That may be a hard sell for some. Perhaps one option for some installs as well would just be to allow the solar CT’s to be used as a second set of primary CT’s, or to make Sense units with more than two CT ports on them.
This is a hard one since there are so many different types of electrical installations out there in the wild with so many different needs. I hope Sense finds a solution that works both technically and financially!