New Benchmark for Large-Scale Energy Storage in China! SCIYON's Autonomous and Controllable NT6000 Supports Full Commissioning of World's Largest Compressed Air Energy Storage Project

On January 22nd, another success was reported for the Guoxin Suyan Energy Storage and Power Generation Project. At 18:59, Unit No. 2 achieved its first grid connection, and by 19:49, it reached full-load operation at 300MW. The system operated stably with excellent performance across all parameters, laying a solid foundation for the project's large-scale commercial operation.

This achievement follows the full-load power generation of Unit No. 1 on December 13, 2025, marking the full commissioning of the world's largest compressed air energy storage power station. It also fully validates the high reliability, precision, and intelligent level of SCIYON's integrated control solution combining DCS, DEH, and CCS in complex multi-energy coupling scenarios.

As Jiangsu Province's first 300MW-level compressed air energy storage demonstration project, the Guoxin Suyan Compressed Air Energy Storage Project innovatively adopts the non-supplementary combustion "high-temperature adiabatic compression" technology using molten salt + pressurized hot water storage. It compresses air during periods of surplus electricity and stores it in underground salt caverns, then releases the high-pressure air during peak electricity demand to drive turbine generators for power generation, achieving efficient "electricity-air-electricity" energy conversion. The project boasts an energy storage capacity of 2400 MWh, a system conversion efficiency as high as 71%, with many parameters being the best or leading globally.

The successful dual-unit commissioning not only fully verifies the reliability and large-scale application potential of compressed air energy storage technology but also provides significant practical support and technical experience for building China's new power system and transforming its energy structure. It injects strong new momentum into ensuring national energy security and achieving the "dual carbon" goals.

Building an Energy Storage Benchmark with Autonomous and Controllable Technology

Compressed air energy storage technology offers advantages such as large scale, long lifespan, and environmental friendliness (carbon-free). However, its complex operating conditions and high requirements for dynamic response pose unprecedented challenges for the control system.

SCIYON provided the project with an intelligent control system based on its autonomous and controllable NT6000, offering an integrated DCS, DEH, and CCS control system. To address the control demands of the compressed air energy storage system, including frequent unit start-stop, rapid load changes, coordinated multi-compressor loading, and stable low-load operation, SCIYON collaborated with relevant parties to innovatively develop a multi-compressor coordinated control scheme. The compressor control system integrates specialized algorithm modules for anti-surge control/protection and performance control, realizing coordinated serial-parallel loading control for two strings of six compressors per single unit. Furthermore, the system is equipped with APS one-click start-stop technology, reducing start-stop operational workload and significantly enhancing automation levels.

Behind these outstanding capabilities lies solid delivery and deep collaboration throughout the entire project cycle. Facing multiple challenges such as technical complexity and tight schedules, the SCIYON project team, leveraging rich technical experience in the compressed air energy storage field, worked closely with all participating units. They implemented meticulous whole-process management from detailed scheme design to on-site commissioning, system integration testing, and operational optimization. Technical experts were stationed on-site, steadily advancing every task with professional expertise and detailed engineering management. Ultimately, the system was put into operation with high quality, receiving high recognition from the user, providing a solid guarantee for the stable operation of this world's largest compressed air energy storage power station.

Looking ahead, SCIYON will continue to focus on the "dual carbon" goals, deepening its core energy storage control technologies, and accelerating the large-scale application of its DCS, DEH, and CCS systems in more new energy storage, integrated energy, and flexibility retrofit projects. It aims to contribute wisdom and strength to enhancing the power system's regulation capability, ensuring energy security, and building a clean, low-carbon new energy system!