# Saudi Aramco Synchronizes 420 MW Jafurah Cogeneration Substation with 380 kV Grid > Saudi Aramco has synchronized its 420 MW Jafurah gas field cogeneration plant with the Saudi Electricity Company 380 kV transmission grid through 2 generator step-up transformers rated at 250 MVA each. - **Source date:** 2026-10-01 - **Original source:** [Saudi Aramco News Media](https://www.aramco.com/en/news-media/news/2026/jafurah-420mw-cogen-grid-synchronization) - **Reading time:** 1 min - **Language:** en - **URL:** https://voltformer.com/news/aramco-synchronizes-420mw-jafurah-cogeneration-substation-october-2026 - **Markdown:** https://voltformer.com/news/aramco-synchronizes-420mw-jafurah-cogeneration-substation-october-2026.md ## Industrial Cogeneration Interconnection The new 380 kV gas-insulated substation links the combined-cycle cogeneration facility to the national grid via 32 km of underground transmission cable. 2 generator step-up transformers rated at 250 MVA each elevate generated voltage from 18 kV to 380 kV with continuous online oil condition monitoring. ## Thermal Efficiency and Steam Export Integration The cogeneration complex achieves 82 % overall thermal efficiency by generating 420 MW of power while exporting high-pressure steam to processing units. High-speed differential protection relays isolate any internal faults in less than 35 ms, ensuring zero disruption to critical processing trains. ## Other languages - [en](https://voltformer.com/news/aramco-synchronizes-420mw-jafurah-cogeneration-substation-october-2026) - [tr](https://voltformer.com/tr/news/aramco-synchronizes-420mw-jafurah-cogeneration-substation-october-2026) - [de](https://voltformer.com/de/news/aramco-synchronizes-420mw-jafurah-cogeneration-substation-october-2026) - [ru](https://voltformer.com/ru/news/aramco-synchronizes-420mw-jafurah-cogeneration-substation-october-2026) - [es](https://voltformer.com/es/news/aramco-synchronizes-420mw-jafurah-cogeneration-substation-october-2026) - [ar](https://voltformer.com/ar/news/aramco-synchronizes-420mw-jafurah-cogeneration-substation-october-2026) - [it](https://voltformer.com/it/news/aramco-synchronizes-420mw-jafurah-cogeneration-substation-october-2026) - [pt](https://voltformer.com/pt/news/aramco-synchronizes-420mw-jafurah-cogeneration-substation-october-2026) [Company and energy news](https://voltformer.com/news.md) ยท [Voltformer catalog](https://voltformer.com/catalog)