125W Panel, Bracket, Wire: UL-Solar.com 300W Inverter: EBay Grid-tie total cost actually about $525 (mis-added in video). 45W off grid setup: Harbor Freight Marine batteries: Auto store The combined cost of everything in the video is about $950. This is about having a small backup system in case of a power outage, while also being able to send the solar power to my house to reduce grid usage. We use the off-grid setup at the lake, where there’s no electricity. You need to use thick guage stranded wire for solar. 750W inverter is not big enough to run very much. Plus, 2 batteries will drain fairly quickly. My bigger setup will use at least 4 battieries with 2000W or more for the inverter, along with a few more panels.