Solar panel systems have no long-term maintenance costs, so solar is mostly a one-time investment. Solar systems installation prices have leveled out over the last two years and we are trying to save our prices and make them lowest on the market, we will provide you with the best price. Just as important is a solar panel's degradation rate, and Clean Energy Solar Systems is the lowest in the industry. Over its guaranteed 25-year lifespan, a SunPower panel will provide 60 percent more power than a conventional panel. And, while our best-in-industry Combined Power and Product Warranty is for 25 years, SunPower panels have an expected useful life of 40 years. Clean Energy Solar Systems provide installation and give you warranty of our product. Call us now and we will provide you with the best experience in the industry and take advantage of the sun. We are located in Brooklyn, NY.