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.
- Publish date: 2026-10-04
- Category: HVDC & Substations
- Original source: Saudi Electricity Company Media Centre
- Reading time: 1 min
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.