Alternative Energy Systems (AES) provides sustainable energy services to residential, commercial, and agricultural customers in the North Valley. Based in Chico, CA, locally-owned AES was founded with the idea that we all need to share in the responsibility of maintaining and improving our environment for generations to come. Since we installed our first solar system as AES in 2003, we've focused on offering award-winning service and the highest quality equipment, while building lifelong relationships with our clients. In 2007, we partnered with SunPower®, a worldwide solar manufacturer, so we could offer our customers this premium, cutting-edge technology. SunPower's distinctive solar systems combine the most efficient energy production with the industry's best warranties. We're proud to be an Elite Dealer in the SunPower family. Alternative Energy Systems. More than just solar. We're your local energy experts.