Yeah, we used the g20 south-facing ground mount, no ballast, about 40 18” ground screws for a 48 panel array (relatively small 108 cell panels). Soil is clay, f

Yeah, we used the g20 south-facing ground mount, no ballast, about 40 18” ground screws for a 48 panel array (relatively small 108 cell panels). Soil is clay, for reference, not very rocky, so might be unusually well suited for the screws. Easy to drive with a socket wrench or impact wrench, 1” heads.