Electrical plan round 2. Eric Rosenberry keyed me into a good idea. I was planning on getting a residential 600amp service, but PGE offers a metering plan for EV charging that has variable time-of-day rates. From 10pm-6am power is about half the cost of normal day rates, but day rates are between 2 and 3 times normal rates. If you did your entire house as time-of-day metering you would probably pay more, but if you get 2 meters, and only connect EV charging to the time-of-day meter you can get the best of both world. Since you can program the Tesla chargers to only charge in that time interval you can always charge at the low rate every night. The additional meter cost is only $11/month, so less than the additional charge for a 600 amp service.

That leaves me with the other 400amp service for other regular house stuff. Attached is a new house layout with 5 total panels. 1 Panel dedicated for EVs, to main panels in the mechanical room, a seperate generator panel, and a panel in the shop (for all of the lower level stuff).

Comments and criticisms welcome!