Wan'an Hydropower Station

　　The Wan'an Hydropower Plant is situated at Huangkong Shoal in the middle reaches of the Gan River, approximately 2 kilometers upstream from Wan'an County in Jiangxi Province. It borders the Beijing-Kowloon Railway to the east and the Guangdong-Jiangxi Expressway to the west. It is 90 kilometers south of Ganzhou City — Jiangxi’s southern gateway — and 320 kilometers north of Nanchang City, the “Hero City.” It is currently the largest hydropower plant in Jiangxi. The plant primarily generates electricity while also providing comprehensive benefits such as flood control, navigation, irrigation, and fish farming. Serving as a key hub for power exchange between northern and southern Jiangxi, it plays roles in frequency regulation, peak shaving, and emergency reserve power.

　　The Wan'an Hydropower Station adopted a construction plan of “completing the project in one phase while impounding the reservoir in stages.” The station is classified as a Grade I project, with its main structures rated as Class I. It is designed to withstand a once-in-a-millennium flood and verified against a once-in-ten-millennia flood, with safeguards in place for the probable maximum flood to protect the dam. The final designed storage level of the reservoir is 100 meters, and the installed capacity of the power station is 500 MW (5 × 100 MW). Currently operating under initial-stage parameters, the normal reservoir water level is 96 meters, with an installed capacity of 400 MW (4 × 100 MW). The designed average annual power generation is 1.15 billion kWh.

　　The main structures of the Wan'an Hydroelectric Project consist of a concrete dam, spillway structures, power station building, ship lock, earthen dam, and irrigation canal headworks. The dam has a total length of 1,104 meters.

　　The maximum dam height is 68.1 meters, and the total reservoir capacity is 2.216 billion cubic meters. The ship lock is a 2×500

　　ton single-stage ship lock.

　　The construction of the Wan'an Hydropower Plant began in 1958. Due to various historical reasons, the project underwent a challenging “three starts and two suspensions.” In February 1978, approval was granted to resume construction. The first generating unit came online in November 1990, and all four units were fully operational by 1992. In 1993, the reservoir was closed and impounded to the 96-meter level, and in January 1996, it passed the national completion acceptance inspection. In March 2003, it underwent its first periodic dam safety inspection and was classified as a normal dam. Since its commissioning in November 1990, it has generated over 15.8 billion kWh of electricity cumulatively, maintained a safe operation record of nearly 1,000 days, and progressively implemented greening, beautification, and lighting projects, transforming into a garden-style factory. Since 1996, it has been honored as a “Safe and Civilized Production Model Enterprise” by the former Ministry of Electric Power, and recognized as a “Double-Civilization Unit” at provincial and ministerial levels. In September 2000, it was awarded “First-Class Hydropower Plant” and “Advanced Unit in Ideological and Political Work” by State Power Corporation. In 2002, it received the “Jiangxi Province Habitat Environment Example Award,” and in 2003, its safety production efforts were recognized with the “State Power Second-Class Certificate of Merit.” The plant's Party Committee was awarded “Advanced Grassroots Party Organization” by the Group Party Committee, and the plant's labor union was honored as a “Model Workers' Home” by the All-China Federation of Trade Unions.

　　After being placed under the management of China Guodian Corporation in December 2002, the Wan'an Hydropower Plant followed the corporation’s eight-character work guideline of “Innovate, Expand, Solidify, Strengthen.” Guided by the principle of “Consolidating first-class achievements, refining core operations, vigorously developing diversified industries, strengthening Wan’Dian’s capabilities, and making new contributions to the revitalization of the power industry,” it has earnestly focused on production, operation, reform, and development, striving toward new goals with renewed enthusiasm and vigor.

　　The Wan'an Hydropower Plant