hi team I had an install 20kw 20 southfacing 23 north facing panels.2x8kwh 3phase sunsynk hybrid inverters in parallel with 8 10kwh sunket batteries four on one busbar and another four on the other busbar and the two busbars connected together the maximum charge from solar on good day is around 5420w is it possible to get more then this?

South facing panels is a waste in South Africa, won't get much production.

On 2026/06/21 at 11:50 AM, ash785 said:

hi team I had an install 20kw 20 southfacing 23 north facing panels.2x8kwh 3phase sunsynk hybrid inverters in parallel with 8 10kwh sunket batteries four on one busbar and another four on the other busbar and the two busbars connected together the maximum charge from solar on good day is around 5420w is it possible to get more then this?

Even if the south facing panels provide zero PV the quoted 5.4kW PV from the 23 panels seems lowish.

More data like angle, size of panels, SOC of batteries, load used and area of installation is needed to get an estimated closer answer.

On 2026/06/21 at 11:50 AM, ash785 said:

hi team I had an install 20kw 20 southfacing 23 north facing panels.2x8kwh 3phase sunsynk hybrid inverters in parallel with 8 10kwh sunket batteries four on one busbar and another four on the other busbar and the two busbars connected together the maximum charge from solar on good day is around 5420w is it possible to get more then this?

Where are you based? I recommend getting a professional 3rd party to check the entire system thoroughly. Wouldn't trust the installers know how given the south facing panels.

On 2026/06/21 at 11:50 AM, ash785 said:

the maximum charge from solar on good day is around 5420w

sounds very low, are these 450W or 480W Panels? and are they all the same? how are they connected? 23 panels in 1 string sounds problematic... where are you georgraphically and how much cloud cover have you had?

I have 4S2P 280W panels times two and 4S1P 560W panels, so 3 X 2240Wp, we have had a fair amount of cloud cover of late, totally cloudy right now and 2.8degC outdoors around sunrise earlier today. I'll attach a power production screenshot from the 1st of June until now and the worst day, so far, the 22nd of June we produced 7.96kWh for the day, which is really low, but eithert side of that, the 21st we had 14.01kWh and the 23d, no clouds whatsoever, I'm guessing, we had 30.98kWh for the day...

Edited 12 hours ago12 hr by Kalahari Meerkat

@ash785 also what is the state of charge for the batteries, are they limiting the power production, possibly? what is the daily consumption on your end approximately and are you connected to the grid? If you are then some inverter settings may prefer grid power to solar, maybe, so looking at that is also a good idea.

17 hours ago, abd7 said:

Where are you based? I recommend getting a professional 3rd party to check the entire system thoroughly. Wouldn't trust the installers know how given the south facing panels.

All my panels are south facing and I’m offgrid so I wouldn’t say it’s a waste.

You get poor generation in winter true, but my array still generates about 30% more than I need in winter for the house. Most of my generation occurs after 10am.

Summer I generate almost 3 to 4 times mores than I need.

Having south facing panels on an install can help considerably to meet energy needs as not everyone has a north facing roof.

I have a freely unshaded north facing roof and another south roof that will be used when energy requirements go up such as getting an EV. I can basically increase PV to about 20kWp.

But to get back to his problem, he needs to check summer values. I get 1/3 of my peak in Winter. There may actually be nothing wrong with his install.

I would focus less on the peak and more on what the kWh generation is for the whole day. You can have a peak of 5kW and generate more than someone with a peak of 10.

Please confirm your inverter model, and the type of grid supply or wiring layout.

On 2026/06/21 at 11:50 AM, ash785 said:

2x8kwh 3phase sunsynk hybrid inverters in parallel

I can't find any info on an 8kW 3-phase Sunsynk inverter (assuming you meant kW not kWh).

Or are you saying that you have 2x single-phase inverters, each connected on one phase within a 3-phase power network?

What phase(s) are your loads on, and which are the inverters on?

Edited 7 hours ago7 hr by GreenFields