Beginner advise EG4 install and which panels to use

[teisen]

Hello, this is my first post, but I have been reading up quite a bit. I am planning on buying the KIT-E0015-28-2-1 at SignatureSolar. It contains: EG4 12kPV Hybrid Inverter, EG4 PowerPro WallMount AllWeather Lithium Battery 48V 280Ah | 14.3kWh LiFePO4 and then either 32 x Hyperion 400W Bifacial Solar Panel (Black) - 12800 Watts or 28 x Sirius PV 410W Bifacial Solar Panel (Black). I am unsure which panels I should choose. If they are similar enough I would prefer the 28 as I really only have space for 28 panels 14 in the SE and 14 in the NW. I could maybe relocate some plumbing vents or clarify fire setbacks to house 30-32. There is no shade on the roof so I think I would have two strings with each 7 in series / 2 parallel.

I am also planning on buying a Gridboss to organize the mess of meters and main panels. I currently have two 200a meters next to each other, each feeding a separate 200a main panel. The house used to be split but is now 1 family home. I am pretty sure i could get away with just one 200amp service specially utilizing the sheddable loads the Gridboss offers and by having just one water heater, one range but two AC units and a car charger. I would then hook one panel up to the backed up load and the other panel as the non backed up load.

I was looking for some advice if you think this is a good configuration, or what other options I should be looking into? I am in Georgia, so I am limited to Inverter nameplate rating of 10k Watts AC and exporting energy does not make much financial sense.
I estimate that 12800 PV Watts could offset about 81% of my power consumption. How do i figure out if the inverter is big enough? I like the ecosystem, but not sure if i should use a 10k watt inverter from a different company instead.

Thank you
Toby

 

[Recovering EE]

With that size inverter and array, I'd probably go for at least *two* wall-mount batteries.

What did your power/energy audit show you needed?

 

[Quattrohead]

I could maybe relocate some plumbing vents

On my first PV panel install, I was able to cut a vent down and add a couple of elbows to sneak the vent out of the way under the panels.
The 18kpv can be locked to 10kw export by EG4 for you, but you will still be able to use its 12kw total load with its surge rating if you bump into it.
However, at least 2 batteries should be used.
Are you going to get permits and inspections ?

 

[teisen]

On my first PV panel install, I was able to cut a vent down and add a couple of elbows to sneak the vent out of the way under the panels.
The 18kpv can be locked to 10kw export by EG4 for you, but you will still be able to use its 12kw total load with its surge rating if you bump into it.
However, at least 2 batteries should be used.
Are you going to get permits and inspections ?

Oh, that is an interesting option. Didn't know about that. When they lock it in, will the nameplate show 10kw AC max? I have been told that they won't allow a software derate. And yes, I am trying to navigate the permits and such. My area is not very strict but they do require permits for this type of work. One thing an electrician friend said is that I will need to switch from 3 wire to 4 wire from meters to main panels.

 

[teisen]

With that size inverter and array, I'd probably go for at least *two* wall-mount batteries.

What did your power/energy audit show you needed?

I agree that may be necessary. Plan is to mount it in a way to leave space for a second one down the road.

 

[teisen]

What did your power/energy audit show you needed?

It should be about 50percent cooling / heating and 31 percent EV charging. We work at home so I think I could shift to daytime charging.
I also thought I could maybe get 2 eg4 solar only mini splits and place the panels on separate roofs which each have space for 4 more panels if the solar of the whole home is not enough.
18720 kw annual use total.