ggunn
PE (Electrical), NABCEP certified
- Location
- Austin, TX, USA
- Occupation
- Consulting Electrical Engineer - Photovoltaic Systems
You understand correctly; the PowerWall 2 AC is the only Tesla solution now. Offgrid operation can be done with a StorEdge inverter and a PowerWall 2 DC, but it ain't easy and SolarEdge doesn't really want to help. Another designer here in my office made it work for one of our customers but I don't know the details; I just know that he was pretty stressed there for a while.Which, as I understand it, is not being manufactured and there are no plans to go forward with it. See this amusing article from down under. Also, looks like the inverter won't support off-grid solutions as there is no way to match charging current to demand when the demand is less than 100%. At least, that's how I read it.
SolarEdge is understandably unhappy with Tesla; their StorEdge inverter is now obsolete.