en.Wedoany.com Reported - On June 3, the Tongle 300MW/600MWh New Energy Storage Station Project (dispatch name "Xingle Energy Storage Station") in Leye County, Baise City, Guangxi, successfully completed a one-time grid connection.
Located in Xifeng Tun, Changren Village, Tongle Town, Leye County, Baise City, southwest of the 220kV Xuelian Substation, the Xingle Energy Storage Station covers a total area of approximately 42 mu, with a planned installed capacity of 300MW/600MWh. The project adopts a standardized modular design, configured with 60 independent energy storage units. Each unit consists of two 5MWh energy storage prefabricated cabins and one converter-booster integrated machine. The storage step-up area is equipped with a 220kV step-up substation, including a 220kV main transformer, 220kV GIS equipment, 35kV equipment, and secondary integrated automation protection facilities, ensuring a comprehensive and stable system architecture.
In terms of grid integration, the project leverages existing regional grid path resources and innovatively adopts a "path borrowing" approach. This involves connecting to the grid via two cable circuits that π-connect into the 220kV line of the Yangjiaolou Wind Farm: one circuit connects to the original Gengxin wind power bay at the 220kV Xuelian Substation, with a line length of only 0.13 km; the other connects to the terminal tower of the 220kV line of the Yangjiaolou Wind Farm (co-towered with the 220kV Mingxue Line N162#), with a line length of only 0.15 km. This solution significantly saves construction land, shortens the construction period, ensures efficient grid connection of the station, and provides a replicable practical model for energy storage projects in areas with scarce grid resources.
Leveraging the favorable policy of capacity leasing for Guangxi's new energy storage demonstration projects, the Xingle Energy Storage Station innovatively creates a diversified business model of "capacity leasing + electricity trading + ancillary services." This transforms the project from a "cost center" into a "profit center," charting a clear path for the commercialization and large-scale development of shared energy storage in the southwestern region.
First, in terms of capacity leasing, the project actively responds to the energy storage configuration needs of new energy projects in Leye County and surrounding areas, opening shared storage capacity to new energy development enterprises across the region. This effectively reduces the investment cost of independent energy storage configuration for new energy projects. Second, regarding the electricity market, it actively participates in Guangxi's electricity market trading to earn price differential income, achieving market-based value-added profitability for energy storage assets. Third, in terms of grid services, it deeply engages in multiple ancillary services such as grid frequency regulation, peak shaving, and emergency backup, diversifying the project's revenue sources through multiple channels.
The official grid connection of the Xingle Energy Storage Station fills the gap in energy storage supporting facilities for the new energy industry in Leye County, establishing a clean energy closed loop of "new energy power generation + large-scale energy storage peak shaving + electricity market trading." This helps accelerate the local transformation into a key green energy hub in the southwestern region, driving green, low-carbon, and high-quality development of the real economy.
Preliminary estimates indicate that after the project is put into operation, the station's annual discharge service electricity will reach 193 million kWh, meeting the annual electricity needs of approximately 80,200 ordinary households. It can save 58,200 tons of standard coal annually, reduce carbon dioxide emissions by 158,400 tons, cut sulfur dioxide emissions by 14.82 tons, and achieve an ecological greening effect equivalent to planting 8.654 million trees, effectively securing people's livelihood electricity supply with green energy storage capabilities.
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