Huaneng Changxing Shared Energy Storage Project

The Huaneng Changxing 100MW/200MWh Shared Energy Storage Project was invested in and built by Huaneng (Zhejiang) Energy Development Co., Ltd., Changxing Branch.
A segment of the project, with a capacity of 13.5MW/26.8MWh, was commissioned in Changxing, Zhejiang Province in June 2024.

The project employs 20-foot prefabricated battery containers, each providing 3.35 MWh of storage using high-capacity 280 Ah lithium iron phosphate (LFP) cells. Designed with liquid cooling and IP54 protection, the system ensures safe and reliable operation under a wide range of conditions, maintaining stability from -30℃ to 55℃ and in 0-95% relative humidity (non-condensing).
Its configuration and robust cell design deliver both high energy capacity and dependable performance, making the system well-suited for continuous, demanding applications.

As a key part of the clean energy transition, the project enhances regional grid peak-shaving capacity. It also facilitates the integration of renewable energy and supports green, low-carbon development.

More broadly, this project demonstrates the practical role of shared energy storage as a flexible, multi-participant platform. It shows how these systems create tangible benefits for the grid, renewable energy, electricity users, and society as a whole.

Shared energy storage is an important innovation in the energy sector. Acting as a “public energy storage platform,” it provides flexible and dispatchable services to multiple participants.
For the grid, shared storage responds quickly to dispatch signals. It discharges during peak demand and charges during off-peak hours. This smooths load fluctuations, reduces peak-valley gaps, and strengthens reliability and resilience.

For renewable energy, shared storage stores surplus electricity from wind and solar and releases it when needed. It transforms variable output into stable, predictable, and dispatchable power.
This improves utilization and supports green development. For electricity users, shared storage enhances overall grid stability and efficiency. It indirectly ensures a more reliable supply and helps moderate price fluctuations.

At the national level, shared energy storage enables large-scale renewable integration and supports the development of a new power system. It also contributes to achieving carbon peaking and carbon neutrality goals.

In short, shared energy storage overcomes the limits of traditional dedicated systems.
By pooling resources, it optimizes allocation and creates shared benefits: a safer grid, more efficient renewable energy, and a greener society.