News
Published in: Solar, Press Releases
Zhongshan, China, January 26, 2026 – The 100MW/200MWh energy storage power plant in Zhongshan City, China, has officially commenced commercial operation, marking the city’s first standalone energy storage project. By actively participating in grid ancillary service markets, the project has a stable revenue mechanism centered on frequency regulation, delivering rapid and accurate response to support regional grid stability.
For this project, Sineng Electric supplied its 1250 kW central PCS. Equipped with next-generation enhanced grid-forming technology, world-class IGBT driver technology, and intelligent control algorithms, the PCS excels in key performance metrics, including response speed, command execution latency, and control accuracy.
Since commissioning, the Sineng central PCS has consistently demonstrated advanced performance in secondary frequency regulation services. With millisecond-level response capability, Sineng’s energy storage solution reacts swiftly to grid frequency deviations. The PCS supports flexible and customizable regulation rates of up to 50Pn/s, achieves a response time of ≤5 ms, and maintains regulation accuracy within ±0.5%, meeting the stringent technical requirements of modern power systems.
By delivering fast, accurate, and reliable frequency regulation, the project significantly enhances grid stability and power quality, strengthening the resilience of the local electricity network and supporting secure power supply for millions of households. The project also underscores the pivotal role of advanced PCS technology in unlocking the full potential of standalone energy storage within market-oriented ancillary service frameworks.
About Sineng
Sineng Electric is the global leading supplier of a comprehensive product portfolio including PV inverters, energy storage PCS, hydrogen production power supply solution and power quality products. By establishing four R&D centers and leveraging top-notch resources, Sineng's unwavering commitment to technological innovation has enabled more people to access cost-effective, reliable, and sustainable energy. Known for the engineering excellence, rigorous testing standards, and consistent quality, Sineng has earned recognition as a BloombergNEF tier 1 power inverter maker and ranked No. 4 globally in PV inverter shipments for two consecutive years in 2023 and 2024, No.5 globally in energy storage PCS shipments in 2024.
