# SEC Energizes 380 kV Substation for Sudair Solar Park Phase 2 Expansion

> Saudi Electricity Company (SEC) has energized the 380 kV bulk transmission substation connecting Phase 2 of the Sudair Solar PV project to the central grid, adding 1800 MW of renewable transmission capability.

- **Source date:** 2026-10-04
- **Original source:** [Saudi Electricity Company Media Centre](https://www.se.com.sa/en-us/media/press-releases/sudair-solar-phase-2-substation-october-2026)
- **Reading time:** 1 min
- **Language:** en
- **URL:** https://voltformer.com/news/sec-energizes-380kv-sudair-solar-substation-phase-2-october-2026
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## High-Voltage Transmission Infrastructure

The newly commissioned 380 kV gas-insulated switchgear substation integrates 67 km of double-circuit overhead transmission lines into the Riyadh regional network.

The installation utilizes sulfur hexafluoride gas insulated technology to ensure maximum operational safety in severe desert ambient conditions.

## Grid Integration and Transformer Redundancy

3 autotransformers rated at 500 MVA each and equipped with online dissolved gas monitoring have been commissioned to manage heavy solar generation feed-in.

Automated protection schemes provide high-speed clearance of transmission faults to protect regional grid stability during peak summer demand.

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