Huai'an Salt Cavern compressed air energy storage project fully operational in China
Type: Development · Technology: Storage · Country: China · Capacity: 600 MW · Value: $520M · Announced: 2026-03-05
The 600 MW/2400 MWh Huai'an Salt Cavern compressed air energy storage project, with an investment of $520 million, is now fully operational in China, with equipment supplied by Harbin Electric Corporation and Shanghai Electric.
Analysis
The Huai'an Salt Cavern compressed air energy storage project, now fully operational in Jiangsu, China, represents a substantial advancement in grid-scale energy flexibility with its 600 MW capacity and 2400 MWh storage duration. This $520 million investment provides critical balancing capabilities for China's power grid, particularly in integrating intermittent renewable energy sources within the region. The project's full operational status, announced on 2026-03-05, leverages the unique geological advantages of salt caverns for efficient and large-scale energy storage. Its commercial logic centers on enhancing grid stability and reliability across Jiangsu, supporting China's ambitious energy transition goals through a proven, long-duration storage technology. The successful commissioning of the Huai'an facility further solidifies the market positions of its key equipment suppliers, Harbin Electric Corporation and Shanghai Electric. Harbin Electric, a state-owned Chinese heavy electrical equipment manufacturer generating multi-billion USD revenue annually, demonstrates its capability in delivering complex power generation units for advanced storage applications. Similarly, Shanghai Electric, a Chinese multinational focused on energy equipment and integrated services, reinforces its expertise in critical infrastructure components for large-scale energy projects. This reliance on domestic suppliers for the $520 million Huai'an project underscores China's strategy to develop and deploy indigenous technology for its energy independence and grid modernization efforts.
Key points
- 600 MW / 2400 MWh capacity for the Huai'an Salt Cavern project.
- $520 million investment in the Jiangsu, China facility.
- Equipment supplied by state-owned Harbin Electric Corporation and multinational Shanghai Electric.
- Project announced fully operational on 2026-03-05.
- Utilizes salt cavern technology for long-duration energy storage.
Counterparties
- Shanghai Electric (Supplier)
- Harbin Electric Corporation (Supplier)