We use a variety of high quality solar panel and inverter manufacturers depending on the application. When possible we utilize American manufactured products. All reputable solar manufacturers offer a 25-30 year warranty on their panels, which are expected to live roughly twice that long. We use SMA, Solectria, Fronius, Power One, Outback and Enphase micro inverters. All inverter companies offer at least a 10-year warranty, though the inverter is expected to last 20 years or longer.