Best way to integrate with existing inverter?

[so what's the scenario]

I'm expanding my solar setup (for reference, I'm from Arizona). My roof maxes out at 24 panels and I'm kind of already out of MPPT slots on my Growatt hybrid inverter. I'm thinking of adding 6 panels to a ground rack on the south end of the property where sun is way better. Should I replace the inverter entirely with one that has more MPPTs? Or just add a separate setup? I'd appreciate any tips.

 

[optimus16]

Considering your inverter is out of MPPT slots, its a lot easier to add a separate inverter for the 6 new panels like you said. It avoids replacing the whole system and gives more flexibility, just make sure it integrates well.

 

[Coops]

If budget allows, a second system might be simpler and more flexible, but why not explore adding an external MPPT controller first? Could save cost and still integrate well.

 

[P3rcival]

I'm expanding my solar setup (for reference, I'm from Arizona). My roof maxes out at 24 panels and I'm kind of already out of MPPT slots on my Growatt hybrid inverter. I'm thinking of adding 6 panels to a ground rack on the south end of the property where sun is way better. Should I replace the inverter entirely with one that has more MPPTs? Or just add a separate setup? I'd appreciate any tips.

If you're already maxed out on MPPTs, adding more panels to the same inverter won't work efficiently. You've got two main options: replace the inverter with one that has more MPPTs, or set up a separate string with its own smaller inverter. If the additional 6 panels will see very different sun conditions than your roof, a separate inverter is often simpler and can actually perform better than forcing them onto the old MPPT