I built a solar Tesla charger for $1200. Info in comments
I built a 4.8 kWh storage with 1.3 kWh panels Tesla charger that''s portable and "good looking." Here''s the breakdown: XYZ 1500 watt pure sine inverter: $200 First solar MPPT controller (60 amp): $100 8 x 165 watt panels: $20 each on Craigslist 4 x mighty max AGM 100 amp hour: $700 Wires and connectors etc: $40