Name: Hongping Pumped Storage Power Station
Address: CN

Overview

The Hongping Pumped Storage Power Station is a major hydroelectric facility located in Jing'an County, Jiangxi Province, China. Situated approximately 11 kilometers northwest of the town of Hongping, the plant serves as a critical component of the regional energy infrastructure. It holds the distinction of being the first pumped-storage hydroelectric power station constructed within Jiangxi Province, marking a significant milestone in the province's diversification of its power generation mix. The facility utilizes water as its primary energy source, leveraging the topography of the Jing'an region to store and release energy as needed to balance the electrical grid.

The station has an installed capacity of 1,200 MW. This capacity is attributed to the initial phase of the project, which was commissioned in 2014. The operation of the Hongping facility is managed by Jiangxi Hongping Pumped Storage Ltd. As an operational asset, the plant plays a vital role in providing grid stability, frequency regulation, and peak-shaving capabilities for the Jiangxi power network. The completion of this first pumped-storage project in the province laid the groundwork for subsequent hydroelectric investments in the region, demonstrating the viability of large-scale pumped storage in the Jiangxi terrain.

History and Development

The Hongping Pumped Storage Power Station holds a distinct position in the regional energy infrastructure of Jiangxi Province, China, as the first pumped-storage hydroelectric facility constructed in the area. Located approximately 11 km northwest of Hongping in Jing'an County, the station was developed to enhance grid stability and storage capacity for the province's growing energy demands. The project's development timeline reflects a structured approach to construction and phased expansion, beginning with initial groundwork in the early 2010s.

Construction and Initial Commissioning

Construction activities for the Hongping facility commenced in 2010, marking the start of a multi-year engineering effort to integrate the station into the local topography and grid network. The project aimed to establish a reliable 1,200 MW capacity installation, operated by Jiangxi Hongping Pumped Storage Ltd. The first generator was successfully commissioned in 2014, initiating operational status for the station. This milestone represented the initial phase of energy production, allowing the facility to begin contributing to the regional power supply while subsequent units were finalized.

The completion of Phase 1 occurred in 2016, solidifying the station's role as a key infrastructure asset in Jiangxi. This phase encompassed the full integration of the primary generation units and associated hydraulic systems, ensuring the station could meet its design capacity of 1,200 MW. The successful rollout of Phase 1 provided critical operational data and validated the site's suitability for further expansion, laying the groundwork for future development stages.

Phase 2 Feasibility and Expansion Plans

Following the stabilization of Phase 1 operations, attention turned to expanding the station's capacity to meet increasing regional energy storage needs. A feasibility study for Phase 2 was initiated in 2021, evaluating technical, economic, and environmental factors to support an additional 1,800 MW of installed capacity. This study was completed in 2022, confirming the viability of the expansion project. The proposed Phase 2 aims to significantly augment the station's output, potentially more than doubling the total capacity of the Hongping facility.

The completion of the Phase 2 feasibility study in 2022 marked a strategic step forward for Jiangxi Hongping Pumped Storage Ltd., positioning the station for continued growth within China's pumped-storage sector. The planned expansion reflects broader trends in energy infrastructure development, emphasizing the need for flexible storage solutions to balance variable renewable energy inputs and peak demand periods. As the project moves toward implementation, the Hongping station remains a pivotal component of Jiangxi's energy landscape, with its initial success serving as a foundation for future enhancements.

Engineering and Infrastructure

The Hongping Pumped Storage Power Station utilizes a dual-reservoir system designed to maximize energy storage and release efficiency. The infrastructure includes two primary dams constructed using concrete gravity techniques, each tailored to the specific topographical and hydraulic requirements of their respective reservoirs.

Dam Construction

The lower reservoir is secured by a roller-compacted concrete gravity dam located on the Hebei River. This structure stands 77.5 m in height, providing the necessary containment for the lower water body. The use of roller-compacted concrete allows for efficient construction and robust structural integrity suitable for the river's flow characteristics.

The upper reservoir is contained by a concrete gravity dam with a height of 44 m. This dam creates the elevated water source required for the pumped-storage cycle, allowing water to be pumped uphill during periods of low energy demand and released through turbines during peak demand.

Reservoir Capacities

The operational efficiency of the Hongping station depends on the volumetric capacity of its two reservoirs. The lower reservoir has a total capacity of 54,140,000 m3, while the upper reservoir holds 27,060,000 m3. These volumes support the station's 1,200 MW installed capacity, enabling flexible power generation and storage.

Component	Specification	Value
Lower Reservoir Dam	Type	Roller-compacted concrete gravity dam
Lower Reservoir Dam	Height	77.5 m
Lower Reservoir Dam	Location	Hebei River
Upper Reservoir Dam	Type	Concrete gravity dam
Upper Reservoir Dam	Height	44 m
Lower Reservoir	Capacity	54,140,000 m3
Upper Reservoir	Capacity	27,060,000 m3

How does the Hongping Pumped Storage System Work?

The Hongping Pumped Storage Power Station operates using a hydraulic head of 528 m, a critical parameter that defines the potential energy available to drive the turbines during peak demand periods. This significant elevation difference between the upper and lower reservoirs allows the facility to store energy efficiently by moving large volumes of water against gravity and releasing it to generate electricity when the grid requires power. The system relies on four 300 MW Francis pump turbines, which collectively provide the station’s total installed capacity of 1,200 MW. These units are reversible, functioning as pumps during off-peak hours when electricity is relatively cheap and as turbines during peak hours when electricity prices are higher.

Water Transfer and Hydraulic Infrastructure

The physical connection between the two reservoirs is established through a complex network of headrace and penstock pipes. The infrastructure includes pipes with lengths of 1318.2 m and 1296.5 m, which channel water from the upper reservoir down to the turbine hall located near the lower reservoir. During the pumping phase, water is drawn from the lower reservoir and forced up through these conduits to fill the upper reservoir. This process consumes electrical energy, which is stored as gravitational potential energy in the elevated water mass.

When electricity generation is required, the flow reverses. Water from the upper reservoir flows down through the 1318.2 m and 1296.5 m long pipes, accelerating due to the 528 m hydraulic head. The kinetic energy of the falling water spins the blades of the four 300 MW Francis turbines. As the turbines rotate, they drive generators to produce electricity, which is then fed into the Jiangxi provincial grid. The efficiency of this cycle depends heavily on the friction losses in the penstocks and the performance of the reversible pump-turbine units.

As the first pumped-storage hydroelectric power station constructed in Jiangxi Province, this facility demonstrates the region’s capability to utilize its topography for energy storage. Located approximately 11 km northwest of Hongping in Jing’an County, the station’s design leverages the local landscape to maximize the 528 m head, ensuring optimal performance of the 1,200 MW capacity. The operational status of the station, commissioned in 2014, confirms the successful integration of these hydraulic and mechanical systems into the regional energy infrastructure.

Why it matters

Its commissioning in 2014 marked a strategic shift in the provincial grid’s ability to manage variable load demands, introducing large-scale mechanical energy storage to a region previously reliant on more conventional generation mixes. As the inaugural project of its kind in Jiangxi, Hongping established a technical and operational benchmark for subsequent storage developments in the province, demonstrating the viability of utilizing the local topography near Hongping in Jing’an County for energy buffering.

Regional Grid Stability

With an installed capacity of 1200 MW, the station serves as a critical asset for grid stability in eastern China. Pumped-storage hydroelectricity functions as a giant battery, allowing the grid to store excess energy during periods of low demand by pumping water to an upper reservoir and releasing it through turbines during peak hours. For Jiangxi, this capability is essential for smoothing out fluctuations in power supply, particularly as the regional mix incorporates more variable sources such as wind and solar photovoltaics. The station’s location, approximately 11 km northwest of Hongping, provides a strategic geographic advantage for transmitting stabilized power to nearby urban and industrial centers in Jiangxi Province.

Operational Impact and Expansion

The operational status of the Hongping station, maintained by Jiangxi Hongping Pumped Storage Ltd., ensures continuous contribution to the regional energy balance. The facility’s 1200 MW capacity allows for rapid response times, crucial for frequency regulation and load-following services. While the initial phase established the foundation, discussions regarding expanded capacity, such as a potential increase to 3000 MW, highlight the growing demand for storage in the Jiangxi grid. Such expansion would significantly enhance the province’s ability to integrate renewable energy sources, reducing curtailment and improving overall grid resilience. The success of Hongping as the first of its kind in Jiangxi provides a proven model for scaling up storage infrastructure, supporting the broader energy transition goals of the region.

Geographic and Environmental Context

The Hongping Pumped Storage Power Station is situated in Jing'an County, Jiangxi Province, China, located approximately 11 km northwest of the town of Hongping. This specific geographic placement within Jiangxi marks the site as the first pumped-storage hydroelectric power station constructed in the province, establishing a key infrastructure milestone for the region's energy grid. The facility's coordinates are 29.0664° N, 115.318° E, positioning it within the hilly terrain characteristic of central Jiangxi, which provides the necessary elevation differential for efficient pumped-storage operations.

Hydrological Resources and Water Volumes

The operational efficiency of the Hongping station relies heavily on the local hydrological context, primarily involving the Hebei River. The water body serves as the critical source for the reservoir systems that drive the 1200 MW capacity of the plant. The hydrological management involves significant water volumes to maintain the head pressure required for energy generation and storage cycles.

Specific operational data indicates that the system involves a pumped water volume of 35,470,000 m³. This substantial volume is cycled between the upper and lower reservoirs to store potential energy during periods of low electricity demand and release it during peak loads. Additionally, the production process utilizes a specific water volume of 6,300,000 m³. These figures highlight the scale of water management required to sustain the station's output, balancing the intake from the Hebei River with the discharge and evaporation losses inherent in the pumped-storage cycle.

The integration of the station into the Jing'an County landscape requires careful environmental monitoring to ensure that the extraction and return of these large water volumes do not adversely affect the local aquatic ecosystems of the Hebei River. The location's proximity to Hongping town also means that the visual and acoustic footprint of the power station is a consideration for local residents, although the primary environmental impact is concentrated in the immediate reservoir areas. The successful operation of this first-in-province facility demonstrates the viability of leveraging Jiangxi's river systems for large-scale renewable energy storage.

Hongping Pumped Storage Power Station