They often come with a service life of 20+ years with proper maintenance making it a great solar power return on investment. The ROI on solar is comparatively higher than other forms of sustainable energy. Solar promises an ROI of 20-30%. With attractive ROI and longer payback periods, it is one of the safest forms of investment. Solar systems are a long-term investment that is modern and sustainable. Solar systems usually come with a service life of more than 20 years with proper maintenance. They are a clean, sustainable source of energy and will help you to cut down your electricity costs in the future. Solar promises an ROI of 25-30%. Investing in rooftop solar is one of the safest investments as it promises attractive paybacks; with a payback period of 3-5 years. Website: ©