Hi all, 

I am busy upgrading my current system and locked on replacing with a Victron. 

I have decided on Victron Quattro 15Kva, paired to the following (which are already installed to my current system):

1. 33 330w Canada Solar - panels - currently connected in a series of three panels. 
2. 3x 10kw Narada LifePO4 batteries. (total 30kw in Dec will add another 30kw)

The application will be eventually to be as self sufficient as possible but with the understanding I will always be connected to Eskom. I want to make sure that it always fully utilizes the 33 solar panels where possible during the day for essential and non essential (geyser etc) and if additional power is needed it can blend from Eskom. Haven't decided yet if I want to use the batteries during the no solar period as they now used for pure backup. 

I have about 3 1/2 years of data on my current system which tells me the following profiles:

1. Highest load (concurrent load 14kw - ACs, geyser etc etc) 
2. Average load during "high usage periods" (bathing kids, cooking etc) - 6kw
3. Average load "quiet times" (kids in bed, just watching TV etc) - 3kw
4. The average load (point 3) is high but I have a large home with lots of electronics that constantly run, and some critical equipment that has to be on 24/7.

As above my 30kw battery bank was designed to get me from sunset to sun up incase of a significant outage (stolen cables, substation issues you know stuff that happens all the time here in ZA) @ a load of 2-2.5kw.

I am a geek by nature so would want as much of the technology as possible (the screen of course) but also the app connection and as much monitoring as possible. 

Been doing some research and what Confuses me is all the bits and bobs you need over and above just the inverter. Thought I would ask here what would be recommended to add to the inverter for this type of system? 

I have solar now with the 30kw of batteries (as per above) so this would be an upgrade on the inverter and additional equipment side. 

Wow - With everything you have you can already power a carefully managed Mansion... *ShockedFace*

If you can afford Victron then definately should be your choice, many of us go for cheaper kit because of budget constraints, but we almost all know that Victron is best option. But if you have that kind of available budget, then rather try find ways to reduce your load. Unless you really live in a Mansion, there should be no reason for an average home to need 35kW/day +++

* Find ways to push it down to 10kW/day or similar and you might be able to go multiple days with your battery supply
* While I envy your existing setup, there must be ways to push your load down - LED lights, Solar Geyser setup (Electric or Other), Heat pumps, "beating your wife when she uses hair dryer when kettle is on😆", there just must be ways to reduce
* If not willing, and affordable - Then stay with Victron. The Victron Quattro 15Kva is awesome kit, but check with your electrician/solar installer about phase connections. It sounds like your house (due to load) might have a 3 phase connection to municipality, you may need 3 of them or rearrange your wiring to suit a single phase.

Good Luck, and again I am envious of your battery and solar capacity already.

I am very fortunate it is a small hotel Victorn is my budget and the wife said spend what you want to spend but she will use what she wants to use. I am ok with that. I don't want Synsync and the cheaper options if I am going to do it I'm Going to do it Proper. I'm just trying to figure out what I will need in terms of kit. 

 

I use Solar assist with my current system this is a snap shot. This excludes geyser stove and other non essential loads. If it provides a better view to assist. 

 

Edited August 7, 20223 yr by MyInverter
Updated with last 12 months instead of last month