# DEWA Energizes 400 kV Substation Expansion at Hassyan Clean Energy Complex

> Dubai Electricity and Water Authority (DEWA) has energized a 400/132 kV gas-insulated substation expansion at the Hassyan Power Complex, adding 3 transformers rated at 500 MVA each for a total conversion capacity of 1500 MVA.

- **Source date:** 2026-10-04
- **Original source:** [Dubai Electricity and Water Authority Media](https://www.dewa.gov.ae/en/about-us/media-centre/dewa-news/2026/10/hassyan-400kv-substation-energization)
- **Reading time:** 1 min
- **Language:** en
- **URL:** https://voltformer.com/news/dewa-energizes-400kv-hassyan-substation-expansion-october-2026
- **Markdown:** https://voltformer.com/news/dewa-energizes-400kv-hassyan-substation-expansion-october-2026.md

## Heavy Power Transmission Integration

The 400 kV GIS substation incorporates 14 bays of sulfur hexafluoride switchgear connected to 28 km of underground extra-high-voltage cables.

3 main transformers rated at 500 MVA each step down transmission voltage to 132 kV to reinforce power delivery across southern Dubai.

## Digital Substation Automation and Smart Grid Operations

The facility integrates advanced digital protection and automated SCADA systems to manage load dispatch with 99.99 % reliability.

This substation expansion increases DEWA total 400 kV transformation capacity to support peak summer demand and future projects.

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