The Nuanshui 500 kV substation in Juungar Banner, Ordos, was put into operation on Oct 30, with a total investment of nearly 900 million yuan ($126 million), adding a critical node to the region's "four horizontal and six vertical" 500 kV main grid and strengthening power transmission for Ordos' large coal-fired and new energy bases.

An aerial view of the Nuanshui 500 kV Substation. [Photo/Wechat account of Caoyuan Cloud]

Located in Nuanshui township, the substation is equipped with two 750 MVA main transformers along with two 500 kV and four 220 kV outgoing transmission lines. Despite harsh construction conditions in a karst fracture zone, the project team employed eco-friendly soil stabilization techniques to minimize land disturbance, while a dedicated task force ensured safety and quality, identifying 286 potential hazards and achieving zero accidents throughout the construction process.

The station will support power transmission for eight 10-million-metric-ton-level coal mines and three 1-million-kilowatt-level new energy bases in Ordos, adding 4.2 billion kWh of annual power supply and cutting carbon emissions by 3.2 million tons per year, bolstering local coal power supply and new energy consumption.