Incorporated in 1956, Patterson & Dewar Engineers is a consulting firm that specializes in the design, electrical and civil engineering, and evaluation of vital electrical infrastructures. We also offer a construction management team with experience in a wide variety of projects. Patterson & Dewar (P&D) operates from our headquarters in Atlanta, Georgia with regional offices in Dallas and Amarillo, Texas working on projects throughout the United States. Our subsidiary, Hood-Patterson & Dewar, offers electrical testing, electrical and mechanical system commissioning and power system studies.