I have a setup on my van and it was about 700$: 100w panel: 100$ Mppt Charge controller: 100$ 100ah batteries x2: 400$ dc breakers, fuses, wires: ~100$ My set

I have a setup on my van and it was about 700$: 100w panel: 100$ Mppt Charge controller: 100$ 100ah batteries x2: 400$ dc breakers, fuses, wires: ~100$ My setup is enough to run a fan 24/7, multiple led light, charge phone & computers (~2x a day). Takes about two days of rainy weather before the system capacity drops below 50% DOC (which is where you should disconnect loads).