Best Place to get 8kW Solis Inverter (single phase)

The NC7 will allow me to legally have a larger inverter, because we are not allowed get a larger inverter and software restrict export to NC6 levels. The larger inverter will let me draw more from the batteries when the load is high, rather than draw from the grid.

The NC7 is supplementary to the MIC upgrade, which I need to draw larger loads during the night rate when I am charging up to 4 EVs. The ideal setup for me will be to have 2 x 7kW chargers and 2 external sockets where granny chargers can be plugged in. I expect that it will be very rare 4 cars would be connected, but often enough, I will need the 2 x 7kW chargers running with 1 granny charger also connected for 4 hours.

Yeah, I could do it without the NC7 and limit export. I'm just trying to make my setup compliant even though it can't actually export more than the max 5kW anyway

Yeah, we use a lot. 40-50kWh daily. Just before we got the solar panels in 2024, we were already at 18k kWh and that was with me being away part of the year with work, so no commuting.

We are on the 4 hour Energia EV tariff. Batteries charge at 5kW through inverter, plus 3kW rectifier. We have a MY, MS, & Leaf with 3.3 OBC. Later in the year, we will have another Leaf with the 6.6 OBC. So, right now, every night the 7kW charger and a granny charger is running.

That's 17kW with nothing else going. The main charger has load balancing, so keeps it under the threshold, but there will often be 3 cars plugged, and infrequently a 4th one. I'll probably get away with a 20kVa supply, which will be a 125A main fuse and 100A isolator fuse. I'm not sure of the cost of the upgrade on the ESB side of things. I can atleast estimate the house side. Any ideas? What about 3-phase?

I don't want to be constantly asking who needs to plug in and play musical chairs every night with chargers. I need more juice and unfortunately that means spending money on upgrades. I should have gone for bigger tails than I did when getting the solar installed and the CU changed.

The 4 hours adds about 25kWh if using the 7kW charger, so tops up a Tesla by around 30%. I'd use about 20-25% on my daily commute. You know yourself with the Leaf. Keep it charged up always, so it's plugged into the granny every night now.

It's more than that though. I charge the storage as much as possible and discharge about 10kWh per night when I can to offset the leccy bill.

Yeah, I have it on it's own RCBO, ran with 6mm^2 armoured. I plan to replace the single socket with a double smart socket tomorrow or the next day. Reason being is I want a regular 3 pin available in the garden and I will be able to plug 2 granny chargers into the double socket and have them on timers if I want.

The Tesla charge point that I plan to install on the other wall is where I park the Y 90% of the time and it will make it slightly easier to plug in….not that it's a big inconvenience plugging in at the minute. I'll be running a fresh cable for that and the electrician can connect it when I am getting the tails done.

You're right. I was thinking about that lastnight. While the cable is more than adequate, the smart socket could feel the heat alright. I'll revert to my original plan and use the double socket as a timed and an open timed socket, where one socket will be free to charge anytime and the other will be timed for the cheap rate. I could install another external socket beside it off the same cable to keep the heat down if I needed to plug in 2 cars there.

I forgot. Back to my OP question. Any recommendation on where to source the 8kW Solis?