After looking at the output of the new system in winter time, it's clear that we
still don't have nearly a big enough system for our basic needs given the electric car and Mrs EEVblog working a lot from home now.
I expect more than enough in summer using what I have, but it probably doesn't leave much value for getting a battery storage system.
I'm quoting up more 370W panels but with the 366VA IQ7A microinverters, just so I can do a comparison with the 295W IQ7+.
I can fit an extra 7 panels in a 2x4 arrangement (moving one of the existing panels down).
They said they have to run an extra isolator box and cable, as this would max out the existing 4mm cable.
Here is a summary email from my Enphase system. This doesn't include my old 3kW which is barely getting 900W at best in winter on the east side of the roof.