Four of the substations, rated at 115/13.8kV, will be located in Saudi Arabia’s eastern region in Dammam and Al-Hassa. The other two substations, rated at 110/13.8kV, will be built in the country’s western region in Jeddah and Mecca.

As part of the contract, ABB will be responsible for the design, supply, installation and commissioning of the substations, which are scheduled for completion by 2012.

ABB will provide gas-insulated switchgear, transformers, medium-voltage switchgear, low-voltage auxiliary systems and the network protection systems. The company will also equip the substations with automation, control and communication systems making them fully compliant with the global IEC 61850 standard.

Peter Leupp, head of power systems division at ABB, said: “These substations will enhance the capacity of the region’s power transmission and distribution systems and help to meet growing demand for power. They will also help strengthen grid reliability and improve the efficiency of the regional grid.”