I'm researching systems for my whole-home grid-interactive solar+battery system. I've really enjoyed using other smaller Victron components and am trying to compose a system that would meet my needs. The reference I've found that can do these things is the new Sol-Ark 15k. Some capabilities:
- US-North America 120/240v (split-phase) grid interconnected.
- Controllable grid-interactive profiles (sell-back, peak shaving, etc).
- AC or DC coupled solar capability
- 48v Battery support (with interactivity to LiFePO4 BCMs)
- 100A+ load pass-through for normal operation
- Peak loads are around 8-10k (oven and/or stovetop).
- typical runtime household load is in the .5-4kw range.
Right now, I'm trying to piece together the inverter-charger aspect (setting aside solar for now) and not sure if I can do this with Victron gear.
Would I be able to use Quattro IIs for this? Would it make more sense to parallel inverters (to get more total passthrough amperage)? Does a parallel output going into an auto-transformer give me more capability (in a home with both 120 and 240v loads) than simply having each inverter drive one leg of the split phase?
Any other thoughts on an apples/apples comparison? Victron quality and support are attractive, but I ultimately need to build a system that meets my needs.