Recently, I have bought Tesla Model 3, and I have decided to expand solar power for this vehicle.

and, Installed 4 used panel which have bought from eBay

270W panels, 10+ years old, and the actual power is around 240~250W.

Include the wood frame, I have spent $200. Due to the power expansion, I have upgraded my charger also,

This is a 96V charger, but support 48V battery. and allowed up to 180V input (in H/W, 250V is maximum).

I have spent around $400 total, and $280 after tax credit.

the estimated energy per year is 900~1000kWh per year, it is $170~$185 value. and I can return my investment atter 1.5years.