iSun, Inc., a solar energy services and infrastructure deployment company, provides design, development, engineering, procurement, installation, storage, and electric vehicle infrastructure services for residential, commercial, industrial, and utility customers in the United States. It provides operation, maintenance, and solar; electrical contracting; 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 Williston, Vermont.