The order encompasses the supply of 15 turnkey substations for the 400kV, 220kV, 132kV, 66kV and 11kV voltage levels, including transformers, control and protection equipment, as well as extension and modification of existing substations.

The construction of a new 400kV substation to connect the Qatar network to the GCC grid is included in the work. Siemens will supply gas-insulated switchgear, protection equipment and equipment for online condition monitoring. The substations will be distributed across the whole country, including the cities of Doha, Dukhan and Maesaieed. Furthermore, 400km of 66kV and 132kV high-voltage cables are part of the order. Completion is scheduled for mid-2012.

Siemens will execute the order as part of the ongoing Qatar Power Transmission System Expansion – Phase IX, for which Siemens has over the last five years installed more than 70 switchgears and approximately 1400km of high-voltage cable.

Udo Niehage, CEO of power transmission division at Siemens Energy, said: “We’re proud that Kahramaa has again opted for field-proven, first-class equipment from Siemens for the expansion of Qatar’s grid. Expansion of the country’s power supply system is a demanding project, for which practically the whole range of our products and systems will be deployed.”