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Saudi Services for Electro Mechanic Works has won the main contract to build a 380kV overhead transmission line in Saudi Arabia’s Medina region, according to market sources.

The project includes the construction of a 354-kilometre-long overhead transmission line that will connect the Al-Henakiyah 3 solar independent power producer (IPP) to several main substations and export power from the plant into the national transmission network.

The scheme is being developed by Saudi Energy, formerly Saudi Electricity Company.

The scope covers the supply and erection of transmission towers and foundations, as well as associated grid interface and termination works.

The Al-Henakiyah 3 solar IPP is part of Saudi Arabia’s wider pipeline of utility-scale solar projects being developed under the Public Investment Fund’s (PIF’s) renewables programme, which runs parallel to the National Renewable Energy Programme (NREP), now in its seventh round.

In 2025, the PIF outlined plans to advance second- and third-phase extensions to five existing solar plants, including Al-Henakiyah, totalling 9GW of additional capacity.

According to official documents, the negotiation process for the directly-awarded concessions was due to start last year.

Saudi Services for Electro Mechanic Works, meanwhile, is continuing to advance several transmission line projects for Saudi Energy.

In June 2025, it was appointed as the main contractor to build a separate 380kV overhead transmission line linking the 2GW Afif 1 solar IPP to the national grid.

Works on this project are not expected to be completed until at least 2027.

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