iSun, Inc. operates as a solar engineering, construction, and procurement contractor for commercial and industrial customers in the Northeastern United States. It also provides electrical contracting services; and data and communication services. The company was formerly known as The Peck Company Holdings, Inc. and changed its name to iSun, Inc. in January 2021. iSun, Inc. was founded in 1972 and is headquartered in South Burlington, Vermont.