We also setup our own off-grid solar system, almost 4 years ago now. The cost was much lower due to lower import fees and lack of regulations where I live, it was altogether somewhere between $3-4k total, for 16 panels, mounting rack, inverter (with backup inverter), mptt, 12 acid-lead batteries, etc.. We saved so much money, and fewer headaches, since state electricity only came around 5-6h a day and people relied on scammy-mafia generator providers that ask for insane prices.