The power section of the plant uses three Siemens SGT5-2000E gas turbines (formerly known as V94.2) driving three electrical generators, each fitted with Heat Recovery Steam Generators (“HRSG”), which utilize the exhaust heat of the gas turbines. The steam generated from the HRSGs is fed into one extraction-condensing steam turbine to complete the combined cycle. The steam turbine manufacturer is Alstom, one of the world leading suppliers of steam turbine technology. Part of the steam extracted from the steam turbine is supplied to the desalination plant. The HRSGs are dual pressure natural circulation with a horizontal gas flow.
The manufacturer of HRSGs is Doosan Heavy Industries (“DHI”). Auxiliaries in the power plant are supplied by power generated within the plant. The net power generated by the power train comprising three gas turbine generators and one steam turbine generator is exported to the grid through a 220 kV substation owned by Oman Electricity Transmission Co. (“OETC”).
Four conventional Multi Stage Flash (“MSF”) desalination units are installed in the Plant. Each unit has an installed gross capacity of 32,750 m3/d at design conditions. The manufacturer is DHI, which is one of the most experienced suppliers of MSF type desalination units. Each unit has 17 heat recovery stages and 3 heat reject stages, and has a performance ratio of 8.2 kg distillate per kg of steam at a Turbine Blade Temperature of 108°C and at reference conditions. The potable water is exported through a connection at the site boundary to OPWP potable water network.
The seawater intake and outfall are part of the Sohar Industrial Port area common facilities and are owned by Ministry of National Economy and operated by Majis Industrial Services Company.
The land for the power plant is owned by the Government which has entered into an Usufruct Agreement with Sohar Industrial Port Company SAOC (“SIPC”). SIPC entered into a Sub-Usufruct agreement with Sohar Power to grant the Company Usufruct rights for 15 years on the land (renewable for another 10 years). Additionally, Ministry of Transport and Communication committed towards Sohar Power to extend the lease up to 30 years under a Sub-Usufruct Direct Agreement.
Natural Gas is supplied by the Ministry of Oil and Gas to a pressure reduction station supplying consumers at the Sohar Industrial Port area