Matrix Service Company provides engineering, fabrication, infrastructure, construction, and maintenance services primarily to the oil, gas, power, petrochemical, industrial, and mining and minerals markets in the United States and Canada. The company operates through four segments: Electrical Infrastructure, Oil Gas and Chemical, Storage Solutions, and Industrial. The Electrical Infrastructure segment offers construction and maintenance services to various power generation facilities, such as combined cycle plants, natural gas fired power stations, and renewable energy installations; and high voltage services comprising construction of new substations, upgrade of existing substations, short-run transmission line installations, distribution upgrades and maintenance, and storm restoration services to investor owned utilities. The Oil Gas and Chemical segment provides turnaround, plant maintenance, and construction services in the downstream petroleum industry; and industrial cleaning services, such as hydro blasting, hydro excavating, chemical cleaning, and vacuum services, as well as performs work in the petrochemical, natural gas, gas processing and compression, and upstream petroleum markets. The Storage Solutions segment is involved in the new construction of crude and refined products aboveground storage tanks comprising floating roof seals; and provision of planned and emergency maintenance services. This segment also undertakes work related to liquefied natural gas, liquid nitrogen/liquid oxygen, liquid petroleum tanks, and other specialty vessels, including spheres; and plant work in storage terminals and tank farms. The Industrial segment constructs and maintains work in the iron and steel, and mining and minerals industries, as well as for bulk material handling, fertilizer production facilities, and other industrial markets clients. The company was founded in 1984 and is headquartered in Tulsa, Oklahoma.