# State Grid Corporation of China Energizes 1,901 km ±800 kV Jinshang-Hubei UHVDC Transmission Link

> State Grid Corporation of China (SGCC) has officially placed the ±800 kV Jinshang-Hubei Ultra-High Voltage Direct Current transmission project into trial commercial operation, delivering 8,000 MW of clean hydropower across 1,901 kilometers from the Tibetan Plateau to central China.

- **Publish Date:** 2026-09-18
- **Category:** renewable-integration
- **Reading Time:** 5 min
- **Original Source Citation:** [State Grid Corporation of China (SGCC) News Service](https://www.sgcc.com.cn/html/sgcc_main_en/col2017112411/2026-09/18/jinshang-hubei-800kv-uhvdc-energization.shtml)
- **Tags:** SGCC, UHVDC, 800 kV, China, Hydropower, Substations, Clean Energy Corridor
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## Engineering Marvel Across Extreme High-Altitude Terrains

Originating at the Kazi converter station in the Jinsha River basin at an elevation exceeding 3,500 meters, the bipole link terminates at the Daye converter station in Hubei, crossing the provinces of Sichuan, Chongqing, and Hubei.

To withstand thin air dielectric breakdown at high altitudes, the high-altitude sending station deploys enlarged external insulation clearance envelopes, composite silicone bushings, and high-capacity oil-immersed converter transformers engineered for seismic zones.

## Delivering 40 Billion Kilowatt-Hours of Green Power Annually

The UHVDC line will transmit approximately 40 TWh of renewable electricity annually to central China’s industrial belt, displacing over 17 million tonnes of raw coal consumption.

The project demonstrates the scalability of ±800 kV DC technology for long-distance bulk power evacuation from remote alpine renewable hubs.

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