Last Updated undefined NaN, NaNHow Many Solar Panels Do I Need?How Many Solar Panels Do I Need?Share Article: Posted on April 5, 2017 LearnHow much solar can I squeeze on my roof?Can I send a design of my roof to see how much I can squeeze on? I had another solar company give me an estimate, an expensive estimate and their design. We are going to install it ourselves and save thousands. I can forward the other solar companies design to help you determine what and how much we need. I’d like to see how much we can put on our roof, space is limited so bigger panels with more power may be my only option.