A microinverter comprises a housing, a cover configured to connect to the housing, and electronics mounted within the housing to convert direct current from a solar panel to alternative current. The housing includes a first side wall, a second side wall perpendicular to the first side wall, and a mounting flange extending from the side walls, the mounting flange including a first channel configured to receive a first rail segment of the solar panel, a second channel configured to receive a second rail segment of the solar panel, and a mounting tab disposed between the channels to receive a fastener extending through one of the rail segments, thereby securing the housing to the solar panel with a single fastener.