Whether you buy a system or lease it, going solar is one of the best ways you as a homeowner can save on energy bills and use renewable energy to power your home. That said, the financing option you choose influences a number of factors, including  the costs, maintenance responsibilities, terms, savings, and the return on investment (ROI) of your solar panel system. Going solar can be an expensive proposition, with the average solar panel installation upfront cost ranging from $17,538 to $23,458 so financing may be the best option for you instead of paying in cash.