Critical Electric Systems Group, also known as CESG, is an electrical contractor that serves clients in the commercial, institutional and commercial markets. It provides construction, design and build and estimation services. The company s clients include Capstar Commercial, Baylor Hospitals, Fortis Properties, Cushman Wakefield, Databank and Frito Lay. The company also offers critical site consultation, construction, maintenance and commissioning services. Its engineering services include design assistance, computer-aided design documentation and lighting analysis. Critical Electric Systems Group additionally specializes in infrared inspections, code compliance surveys, generator and uninterruptible power system installation, disaster recovery and prevention and on-site support services. Critical Electric Systems Group is located in Plano, Texas.