Trying to pick an inverter for some EV charging and other misc loads (Dryer)

[NorthShoreOahu]

I have 36 panels at 280 watts each. Picked these up really cheap.

I just got a chevy bolt and I'd love to charge for free. Looking at inverters/ mppt now.

I'd be fine just charging the EV in the day and skip over the batteries. Would something like the Growatt MIN 6000TL-X work just to charge my car at 240v? I know the watts coming out of the panels in the daytime would fluctuate so the grid power would pick up the slack with that unit?

Would I have trouble hooking a dryer up to that unit?

Amazon has these for sale which seem to have that functionality.

https://www.amazon.com/dp/B0C6XKQMFS/?coliid=I39DKIEHKRJ0KE&colid=2HNPYVI8Z7Z7I&ref_=list_c_wl_lv_ov_lig_dp_it&th=1

Or would it be better to just come up with some cash for an off grid system with batteries and maybe an eg4 or two?

Thanks!!

 

[chrisski]

I doubt Hawaii would let you grid tie 9 kWh of panels without permitting and an interconnect agreement, so attaching the 6 kWh inverter to the utility would work, but there’s steps to do.

The second option with batteries and off grid would work, but you local rules would say how that gets permitted.

 

[Doggydogworld]

Some EV chargers can be set to only charge from solar, or only when solar production exceeds household demand, etc. Wallbox talks about this some. It sounds like a bit of a kludge to me. What I want is a MPPT that DC-charges the EV battery directly instead of (or in addition to) a 48V stationary battery. The CCS DC charging protocols allow this. I've read of commercial MPPTs that support direct CCS charging, but not residential ones.

 

[ohmboy]

This is a post by @ericstahl . Good starting point if you want to build one and scale to your needs.

How to Trickle Charge Your Tesla from DIY, Off-Grid Micro-Solar (+12 miles/day)

This is just a proof of concept that I did while stuck in quarantine. It shows how you can build your own micro solar system for trickle charging your Tesla (or anything else). I will add more panels / batteries over time. By the end of the day it added 12 miles of range to to the car / day...

diysolarforum.com