A working solar system is composed of many components that work together to turn sunlight into usable power for your home. When you buy a SunPower® solar system with components that are designed and engineered to work together, you get the confidence of knowing that not only will the system work better together, but also that, should anything go wrong, you have one company, SunPower, backing your entire system – not just a component. If there is an issue, you have just one phone call to make.