J.R.W. Utility Public Company Limited engages in the design, procurement, construction, and installation of electrical power and telecommunication, and information technology systems. It is involved in high voltage transmission line system construction; high voltage substation construction and equipment installation; construction for changing the electrical cable to the underground systems; and infrastructure system planning, core network system, software and application system construction, and system implementation of other equipment activities. The company also maintains, repairs, and sells electrical system equipment, and telecommunication and information technology systems. The company was incorporated in 1993 and is headquartered in Bangkok, Thailand.