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China Mainland EHV and UHV Transmission Lines
This dataset contains curated line-level records of China's operational extra-high voltage (EHV) and ultra-high voltage (UHV) transmission network, covering UHV AC, EHV DC, and UHV DC lines. All information is derived exclusively from open-source materials and has been manually cross-validated across multiple independent sources. Voltage levels include:
- AC: 1000 kV
- DC: ±400 kV, ±500 kV, ±660 kV, ±800 kV, ±1100 kV
Note: This page only covers lines at the voltage levels listed above. For the complete interprovincial transmission network across all voltage levels (aggregated to provincial nodes), see China Mainland Interprovincial Transmission Network (500 kV and Above).
Data Preview
| line type | voltage | name | name local | name full | name full local | commissioning date | rated capacity mw | rated capacity source | length km | province a | province b |
|---|---|---|---|---|---|---|---|---|---|---|---|
| DC | ±1100 kV | Ji–Quan HVDC | 吉泉直流 | Zhundong – Southern Anhui ±1100 kV UHVDC | 准东-皖南±1100千伏特高压直流输电工程 | 2019-07-01 | 12000 | Reported | 3324 | Xinjiang | Anhui |
| DC | ±800 kV (multi terminal) | Lu–Gao–Zhao HVDC (Gao–Zhao Section) | 禄高肇直流（高肇段） | Luquan (Yunnan) – Gaopo (Guizhou) – Zhaoqing (Guangdong) Three-terminal HVDC (Gao–Zhao Section) | 云南禄劝换流站-贵州高坡换流站-广东肇庆换流站三端直流（高肇段） | 2004-09-24 | 3000 | Reported | 1277 | Guizhou | Guangdong |
| DC | ±800 kV (multi terminal) | Lu–Gao–Zhao HVDC (Lu–Gao Section) | 禄高肇直流（禄高段） | Luquan (Yunnan) – Gaopo (Guizhou) – Zhaoqing (Guangdong) Three-terminal HVDC (Lu–Gao Section) | 云南禄劝换流站-贵州高坡换流站-广东肇庆换流站三端直流（禄高段） | 2020-06-11 | 3000 | Reported | 389 | Yunnan | Guizhou |
Data Visualization
Model Implementations
Relevant Reports
Cell Reports Sustainability • 2025
Advances in Applied Energy • 2025
Proceedings of the National Academy of Sciences • 2024
More China Transmission Datasets
China Mainland Interprovincial Transmission Network (500 kV and 750 kV)
Curated records of interprovincial AC 500 kV and 750 kV transmission lines in mainland China that are in operation or under construction.
China Mainland Interprovincial Transmission Network (500 kV and Above)
Curated records of interprovincial transmission capacity in mainland China for high-voltage DC lines (EHV/UHV) and AC lines rated 500 kV and above.
China Guangdong Inter-Prefecture Transmission Network (500 kV)
500 kV AC transmission lines within Guangdong Province that connect 21 different prefecture-level cities.