IES Holdings Inc owns and manages subsidiaries that design and installs integrated electrical and technology systems and provide infrastructure products and services. It has four business segments; Communications, Residential, Infrastructure Solutions and Commercial & Industrial. Majority of the revenue for the company is generated from its Residential segment in which the company provides electrical installation services for single-family housing and multi-family apartment complexes, as well as heating, ventilation and air conditioning (HVAC) and plumbing installation services. Through this segment it also provides services for the installation of residential solar power, both for new construction and existing residences.