Saudi Arabia primarily utilizes Type G electrical power plugs and sockets—the same three-rectangular-pin standard used in the United Kingdom, Ireland, Hong Kong, and Singapore—operating at a standard voltage of 230 volts and a frequency of 60 Hertz. In certain industrial, commercial, or older residential buildings, Type C (Europlug) and Type F (Schuko) plugs and sockets are also encountered, but Type G remains the mandatory standard for modern electrical installations and appliances across the country.