How big is a solar panel?Post author:freedomtask2Post published:January 15, 2020Post category:FAQThe average size of most panels for rooftop solar installation is about 65″(5.4 ft) by 39″(3.25ft) You Might Also Like How will I know if my property is a good candidate for solar panels? January 15, 2020 What benefits does solar provide? January 15, 2020 Will solar power take over? January 15, 2020