OETC awards contracts worth $475.8m for Phase 1 of Rabt project

Oman Electricity Transmission Company (OETC); member of Nama Group has inked several contracts worth a total of $475.3m (OMR183m) for Phase 1 of the Rabt project that will connect the Sultanate’s National Grid in the north with Petroleum Development of Oman’s (PDO) electricity transmission network and Rural Areas Electricity Company’s (Tanweer) network in the Al Wusta.

The project will also be connected to the Special Economic Zone in Duqm’s (SEZAD) electricity network in the Wilayat of Duqm.

According to Oman News Agency, the project comes in-line with OETC’s efforts to enhance the energy infrastructure in the Sultanate, contribute to diversification of the national economy, reduce the consumption of fossil fuels, — gas and diesel — and reduce the Ozone-depleting gas emissions.

The agreements were signed by Eng. Mas’oud bin Salam al-Riyami, acting CEO of OETC in the presence of Eng. Omar bin Khalfan al-Wahaibi, CEO of Nama Group at the OETC headquarters with representatives of the contractors including Larsen & Toubro (L&T) Oman, KEC International Limited, and Bahwan Engineering Company. 

Phase 1 of the Rabt project will help connect the national grid in the north of Oman with Dhofar electricity transmission network, which will be implemented in Phase 2 of the project.

The project will connect isolated areas from the main system, including Haima, Duqm, and Mahut with the national grid. In addition, it will also connect the national grid with PDO network, thus enhancing the reliability of PDO network, which is currently based on 132kV voltage.

Moreover, the project will help the Omani government achieve its plan of producing 15% of the total energy from renewable energy sources by 2025 by connecting the future solar energy stations and wind farms in the Governorate of Al Wusta.

It will provide secure, stable, and reliable electricity to the Special Economic Zone by connecting the Duqm Electricity network with the 400kV National Grid, that will further help fulfil the , ensuring that the factories and large companies in Duqm are provided with their needs of electricity, which will further help attracting more investors to the zone, provide more employment opportunities and help growing the national economy.

Phase 1 projects

Phase 1 of the Rabt project comprises construction of 660km 400kV overhead lines, five main grid stations in Nuhaida, Barik, Suwaihat, Duqm, and Mahut. This phase is divided into five projects.

Grid stations in Barik and Suwaihat

The first project entails construction of 400kV grid stations in Barik and Suwaihat and linking them to PDO network. Barik station consists of 12 400kV gas insulated switchgear bays, two 132/400kV transformers with a capacity of 500 Megavolt Ampere (MvA) for each.

This project also involves the installation of 10 132kV gas insulated switchgear bays, four shunt reactors, control and relay panels, and communication instrument, in addition to associated construction works.

Meanwhile, Suwaihat Station include construction of twelve 400kV gas insulated switchgear bays, two 132/400kV transformers with a capacity of 500 (MvA) each, in addition to twelve 132kV gas insulated switchgear bays, six shunt reactors, control and relay panels and communication instrument, in addition to associated construction works.

The total cost of project one is $101.3m (OMR39m) and will be implemented over a period of 24 months with six weeks period for mobilisation activities.

The second project covers the construction of 400kV overhead lines with a total length of 129Kkm between Barik and Suwaihat stations and 400kV transmission lines with a total length of 195km between Barik and Nuhaida stations.

The project includes construction of overhead lines towers, insulators, and associated construction works. The cost of this part of Rabt project is $116.9m (OMR45m) and will be implemented over a period of 28 months, in addition to six weeks for mobilisation.

Grid stations in Duqm and Mahout

As part of the third project, 400kv stations will be constructed in Duqm and Mahout. The station in Duqm consists of twelve 400kV gas insulated switchgear bays, two 132/400kv transformers with a capacity of 500MvA each, eight 132kV gas insulated switchgear bays, four 132/33kV transformers with a capacity of 125MvA each, in addition to forty-two 33 kV gas insulated switchgear bays, six shunt reactors, control and relay panels and communication, as well as associated construction works.

Mahout Station consists of nine 400kV gas insulated switchgear bays, two 400/33kV transformers with a capacity of 125MvA each, 21 33kV gas insulated switchgear bays, three shunt reactors, control and relay panels, and communication instrument, in addition to associated construction works.

These stations will support Tanweer’s network in meeting the growing demand for electricity in Duqm Special Economic Zone, with the total project being worth $98.7m (OMR38m). The project will be implemented over a period of 24 months, in addition to six weeks for mobilisation.

The fourth project entails the construction of 400kV overhead lines with a total length of 191km between Suwaihat and Duqm stations and overhead lines with a total length of 152km between Duqm and Mahout stations.

The project worth $116.9m (OMR45m) includes construction of overhead lines towers and insulators, as well as associated construction works. It will be implemented over a period of 28 months, in addition to six weeks for mobilisation.

Grid station in Nuhaida

The last project involves the construction of Nuhaida 132/400kV station. Nuhaida station consists of fourteen 400 kV gas insulated switchgear bays, two 132/400 transformers with a capacity of 500MvA each, and eight 132kV gas insulated switchgear bays, in addition to control and relay panels, communication and associated construction works.

This project also involves the diversion of 400kV transmission line linking Izki and Ibri stations through Nuhaida station, which is considered as the main interconnecting point between National Grid in north of Oman and PDO electricity network.

The total cost of this project project is $44.2m (OMR17m) approximately and will be implemented over a period of 24 months, in addition to six weeks for mobilisation.

Oman Electricity Transmission Company is responsible of the electricity transmission in the national grid in north of Oman, as well as in Dhofar Governorate where electricity is transmitted from the electricity generation plants to load dispatch centres distributed across the Sultanate. The company also manages the 220 kV electricity interconnection lines with GCC Grid.


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