Huaxi Special Steel 15MW/30.09MWh Energy Storage Station
Huaxi Special Steel's power supply is 110kV, stepped down to 10kV through a transformer to supply the plant's buildings. Based on Huaxi's electricity load and transformer capacity, Jingye New Energy planned a 15MW/30.09MWh energy storage station — 6 sets of 5.015MWh liquid-cooled container battery storage systems, 6 sets of 2.5MW Integrated PCS & MV Skid, and a complete Energy Management System (EMS), operating at 10kV grid connection. The project began on 15 February 2025 and reached trial operation in mid-April 2025, about two months later.
| Capacity | 15 MW / 30.09 MWh |
| Configuration | 6 × 5.015MWh liquid-cooled containers + 6 × 2.5MW Integrated PCS & MV Skid + EMS |
| Battery | Liquid-cooled LFP, ~90% system efficiency |
| Grid connection | 110 kV stepped to 10 kV |
| Application | Peak shaving & valley filling (2 cycles/day) |
| Total investment | ~32.5 million yuan |
| Commissioned | Trial operation from mid-April 2025 (started 15 Feb 2025) |
The total project investment is approximately 32.5 million yuan. Huaxi's time-of-use electricity prices are: high-peak 0.97 yuan/kWh (Jun–Aug, Nov–Jan), peak 0.84 yuan/kWh, flat 0.58 yuan/kWh, and valley 0.32 yuan/kWh.
Using two charge–discharge cycles per day — cycle one charging at valley and discharging at peak (a 0.52 yuan/kWh spread), cycle two charging at flat and discharging at peak (a 0.39 yuan/kWh spread) — the station shifts roughly 50,000 kWh per day. The economics can be viewed two ways:
In its first 15 days of grid-connected operation, the station generated over 300,000 yuan in profit.
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