Calculating the ROI for solar panels for your business involves considering several factors, including the total system cost, expected energy savings, available incentives, and your energy consumption. The ROI formula is straightforward: ROI = (Net Profit / Total Investment) x 100 Net Profit is the total savings from reduced energy costs minus the initial investment, including incentives and tax credits. Dividing this by the Total Investment and multiplying by 100 gives you the ROI percentage. In Missouri, businesses often see ROI periods of 3 to 7 years for their solar panel systems, after which they continue to save on energy costs for the system’s lifespan.