# CenterPoint Energy Completes 345 kV Resiliency Substation Expansion in Houston > CenterPoint Energy has completed construction of an elevated 345/138 kV gas-insulated substation equipped with 2 autotransformers rated at 800 MVA each to harden the Greater Houston transmission grid against severe weather. - **Source date:** 2026-10-04 - **Original source:** [CenterPoint Energy Newsroom](https://www.centerpointenergy.com/en-us/news/houston-345kv-resiliency-substation-october-2026) - **Reading time:** 1 min - **Language:** en - **URL:** https://voltformer.com/news/centerpoint-energy-completes-345kv-houston-resiliency-substation-october-2026 - **Markdown:** https://voltformer.com/news/centerpoint-energy-completes-345kv-houston-resiliency-substation-october-2026.md ## Flood-Hardened High-Voltage Infrastructure The newly commissioned 345 kV GIS substation stands on structural foundations elevated 5 meters above historical flood levels along the Houston Ship Channel. 2 autotransformers rated at 800 MVA each step down transmission voltage to 138 kV, routing power through 45 km of underground dielectric cables resistant to coastal hurricane winds. ## ERCOT System Resilience and Loop Capacity The facility adds 1600 MVA of firm transformation capacity to alleviate transmission congestion during extreme summer temperature spikes in Texas. Modern automated transfer switches and SCADA telemetry allow remote sectionalizing within 2 seconds of a localized grid contingency. ## Other languages - [en](https://voltformer.com/news/centerpoint-energy-completes-345kv-houston-resiliency-substation-october-2026) - [tr](https://voltformer.com/tr/news/centerpoint-energy-completes-345kv-houston-resiliency-substation-october-2026) - [de](https://voltformer.com/de/news/centerpoint-energy-completes-345kv-houston-resiliency-substation-october-2026) - [ru](https://voltformer.com/ru/news/centerpoint-energy-completes-345kv-houston-resiliency-substation-october-2026) - [es](https://voltformer.com/es/news/centerpoint-energy-completes-345kv-houston-resiliency-substation-october-2026) - [ar](https://voltformer.com/ar/news/centerpoint-energy-completes-345kv-houston-resiliency-substation-october-2026) - [it](https://voltformer.com/it/news/centerpoint-energy-completes-345kv-houston-resiliency-substation-october-2026) - [pt](https://voltformer.com/pt/news/centerpoint-energy-completes-345kv-houston-resiliency-substation-october-2026) [Company and energy news](https://voltformer.com/news.md) ยท [Voltformer catalog](https://voltformer.com/catalog)