Some time ago I saw a post in which the poster had three sub panels, one for regular loads, one for critical loads and one for solar and Powerwals. I am about to submit a permit application and was wondering what the advantage was of having solar and Powerwalls on a separate sub panel. In my case adding an additional sub panel would be easy and my inverter and future Powerwalls will all be located on the same interior wall. The main panel is on the exterior wall contiguous to this wall. In framing this issue I can see an advantage in piping to the sub panel, especially since I plan on using wire gutters above and below the sub panels. This gutter configuration will also allow the Neurio and CTs to be placed without having to extend their leads. I may have answered my own question but if anyone wants to confirm my assumptions please chime in.