We did everything except mixing the concrete - we hired a guy who lives nearby and has a business called "One Yard of Concrete." He's got a small mixer and can literally just come over and pour one cubic yard of concrete anywhere you like. But we dug the holes, built the support structure, all of it. :D

It's going to provide us, on average, with enough power to run the entire house and use almost nothing from the grid. We're looking at putting aside money to get a small battery backup so that even when the rest of the power grid is down, we can stay up.