SunRise Solar. The manufacturer now offers its solar-powered attic fan in a gable-mounted version for installation inside the attic. The Gable-Mounted Solar Fan requires no electrical wiring and consumes no electricity, powering itself via a remote solar panel that fastens to the roof. The unit removes heat and moisture from the attic and comes with an 11-, a 15-, or a 20-watt solar panel to accommodate various attic sizes. 219.558.2211.