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 Will solar panels add value to my home? January 15, 2020 What’s the difference between solar photovoltaic and solar hot water systems? January 15, 2020 Will solar power ever be viable? January 15, 2020