Headquartered in South Burlington, Vermont, iSun, Inc. is a specialist in delivering integrated solar energy solutions. The company serves commercial and industrial clients throughout the Northeastern United States, handling everything from engineering and design to construction and material procurement. In addition to its solar focus, iSun also offers general electrical contracting services and provides data and communication infrastructure support. This enterprise, founded in 1972, was formerly known as The Peck Company Holdings, Inc. before officially rebranding to iSun, Inc. in January 2021.