# Saudi Electricity Company Accelerates 380 kV BSP Substation Super-Cycle for Renewable & Industrial Corridors

> Saudi Electricity Company (SEC) has issued procurement packages for approximately 20 new 380 kV Bulk Supply Plants (BSPs) and associated high-voltage transmission lines across the Western and Southern provinces to power Vision 2030 giga-projects, green hydrogen hubs, and major data center developments.

- **Publish Date:** 2026-09-26
- **Category:** transmission-substations
- **Reading Time:** 5 min
- **Original Source Citation:** [Saudi Electricity Company (SEC) Transmission Projects Department](https://www.se.com.sa/en-us/news/2026-09-bsp-380kv-super-cycle-tenders-western-province)
- **Tags:** Saudi Electricity Company, SEC, 380 kV Substation, Bulk Supply Plant, Power Transformers, Shunt Reactors, NEOM, Vision 2030, Saudi Arabia
- **Canonical URL:** https://voltformer.com/news/saudi-electricity-company-tenders-20-bsp-substations-380kv-green-hydrogen-corridors
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## Unprecedented Transmission Expansion Wave

Reflecting a historic capital expenditure cycle, SEC’s latest tender round covers high-voltage 380/132 kV and 380/110 kV gas-insulated substations (GIS) strategically located along high-solar irradiance corridors in Tabuk, Yanbu, and the southern highlands. Bidding consortia include major international EPCs and equipment manufacturers such as L&T, SSEM, Alfanar, Linxon, and HD Hyundai Electric.

Each standard BSP package requires three to four 380/132 kV 500 MVA autotransformers engineered for extreme desert ambient temperatures exceeding 55°C, equipped with specialized radiator banks, high-capacity forced-oil forced-air (ODAF/OFAF) cooling, and high-temperature thermal class insulation paper.

## High-Capacity Shunt Reactors and Harmonics Suppression

Because the substations interconnect long 380 kV overhead transmission line runs spanning hundreds of kilometers of desert terrain, the technical specifications call for 380 kV oil-immersed shunt reactors (rated 60 Mvar to 100 Mvar) to absorb Ferranti effect voltage rises during light load conditions.

Furthermore, substations directly serving green hydrogen electrolysis facilities and massive hyperscale computing centers feature tuned active harmonic filter banks and transient overvoltage arresters designed to protect power transformer windings from high-frequency inverter switching spikes.

## Digital Substation Architecture and IEC 61850 Station Bus

All newly tendered BSPs will feature full IEC 61850 Process Bus and Station Bus architectures, eliminating copper control wiring in favor of fiber-optic sampled value (SV) and GOOSE messaging networks. Optical current and voltage transformers (OCTs/OVT) provide high-fidelity measurements directly to intelligent electronic devices (IEDs).

This procurement wave cements Saudi Arabia’s position as one of the world’s most active high-voltage substation markets, with commercial operations slated between late 2027 and 2029.

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