Recommended panels for EG4 18kPV and power wall

[ResonateSunshine]

As haven't received panels from Solar Sovereign, looking again for the best panels for fully utilizing EG4 18kPV inverter and power wall (to be installed in utility room, also have existing 48v 100 Ah LiFePO4 battery setup that might be able to connect) that will be grid supplemented. I had ordered Adanai 530w bifacial but they may not be the best choice. We can install on metal roof facing west or build out ground array facing south with longer cable run. The record low is -20 F/-29 C and average 5.16 hours sun with 3.69 as the low. Thank you for any advice!

 

[DIYrich]

Almost any panels will work, it more depends on quantity. I like ground mount for easy service. Bifacial is good for ground mount.

 

[ResonateSunshine]

Thank you @DIYrich! The concern we had was ensuring proper string Amps and keeping below max Volts but getting the highest possible overall KW.

 

[DIYrich]

Thank you @DIYrich! The concern we had was ensuring proper string Amps and keeping below max Volts but getting the highest possible overall KW.

When you have a range of 150-600v, it gives you a lot of flexibility on panels.

You can put 18kW of panels, and invert 12kW of DC to AC.
How many panels do you want to put on it?
With a Voc of almost 50v, you are probably looking at 10 on a string.
With an Isc of 13a, you are looking at 2 strings on MPPT1, and 1 string on MPPT2 and MPPT3.
Maybe 40 panels total, or 21kW. Unless you have some panels facing east, and some west, you will probably have a lot of clipping.