Empowering Grid Flexibility for Industrial Users With 45MW/133MWh Energy Storage Project

As industrial power users seek greater control over energy costs and grid interaction, Hoymiles is making every effort to deliver high-performance solutions tailored to user-side storage.

In Henan Province, China, the 45MW/133MWh user-side energy storage project developed by Zhengzhou Faxiang Power of Songji Group has officially been connected to the grid. At the heart of the system lies Hoymiles' HPCS1250N liquid-cooling centralized power conversion system (PCS), which enables the power station to achieve multiple goals:

• Reducing electricity costs for industrial users

• Enhancing responsiveness to grid dispatching

• Improving regional power stability

• Maximizing system efficiency and minimizing land usage

The project exemplifies the growing demand for user-side energy storage in China, driven by widening peak-valley electricity price gaps and market reforms.

The Hoymiles HPCS1250N PCS brings a combination of advanced thermal management, grid compatibility, and high integration—all essential for industrial user-side applications.

• Advanced liquid-cooling technology built for harsh environments

• Innovative liquid-cooling architecture allows the PCS to operate continuously at 1.1× rated power at 45°C ambient temperature, without derating at 50°C, and reliably operate at up to 60°C.

• Efficient cooling system and thermal distribution module make sure the temperature difference between IGBT modules is less than 2°C, ensuring greater component lifespan and system stability

• Compact design, lower land use

• Each storage module consists of two HPCS1250N units which were deployed between the energy storage system and the grid. Each HPCS is paired with two 3,720 kWh battery compartments, forming a 2.5 MW/7.4 MWh storage module.

• Thanks to high power density, each PCS occupies less than 1 m², saving over 20% of land area compared to traditional setups

• Smart grid support and fast respons

• Enables advanced grid services including peak shaving, frequency regulation, and power compensation.

• Millisecond-level power response makes the project ready for better participation in the electricity market.