Sichuan-Chongqing UHV AC Reinforcement Project Approved with 15.46 Billion Yuan Investment

Published: May 9, 2026 18:36

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Recently, the Sichuan-Chongqing UHV AC reinforcement project received approval from the National Development and Reform Commission (NDRC). With a total investment of 15.46 billion yuan, the project will construct two new 1000 kV substations in northern Sichuan and eastern Chongqing, adding 12 million kVA of transformer capacity, and build 2×490 km of 1000 kV double-circuit lines including the Chuanbei–Yudong–Bayue route. It is reported that this project is an important component of the Sichuan-Chongqing UHV AC backbone grid, capable of supporting the integration of the Xinjiang-to-Sichuan/Chongqing DC receiving-end converter stations and electricity consumption. It is also one of the 12 national planned power flexible mutual support projects, which is conducive to enhancing inter-provincial power mutual support, surplus-deficit complementation, and emergency accident assistance capabilities between Sichuan and Chongqing. The project is of great significance for ensuring safe and reliable power supply in our province and supporting the construction of a unified national electricity market.

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