IES Holdings, Inc. engages in communications, commercial and industrial, infrastructure solutions, and residential businesses in the United States. Its Commercial & Industrial segment offers electrical and mechanical design, construction, and maintenance services for office buildings, manufacturing facilities, data centers, chemical plants, refineries, wind farms, solar facilities, municipal infrastructures, and health care facilities. Its Communications segment offers network infrastructure services for data centers and other mission critical environments. This segment designs, installs, and maintains network infrastructure for corporate, educational, financial, hospitality and healthcare building, e-commerce distribution center, and high-tech manufacturing facility industries, as well as colocation and managed hosting customers; designs and installs audio/visual, telephone, fire, wireless access, and intrusion alarm systems; and designs/builds, services, and maintains data network sy