Frontline | Operational Data of Singularity Energy's Dengkou GWh-Level Grid-Side Energy Storage Project Disclosed, Its Comprehensive Efficiency Exceeds the Industry Average by 6 Percentage Points

Author | Qiao Yujie

Editor | Yuan Silai

With the continuous growth of installed new energy capacity, the power grid has an increasingly urgent demand for flexible regulation resources, and large-scale energy storage power stations are becoming critical infrastructure that supports new energy consumption and guarantees the safe and stable operation of the power system.

 Recently, Energy Singularity disclosed the latest operation data of its 500MW/2000MWh energy storage project located in Dengkou County, Bayannur City. This project is the first GWh-level single-unit project delivered by Energy Singularity, and it is also a large-scale application benchmark of the flagship product Galaxy-1 string-type prefabricated cabin on the generation-grid side. Since it was put into commercial operation in January 2026, the power station has been operating stably for more than half a year.

(Image source / Enterprise)

Operation data shows that by the end of June 2026, the total cumulative charging capacity of the power station has exceeded 400,000 MWh, with a comprehensive conversion efficiency of over 88.5%. According to the 2025 operation data of energy storage power stations from China Electricity Council, the average comprehensive efficiency of grid-side energy storage is about 82.21%, and the efficiency of this project is more than 6 percentage points higher than the industry average. In the scenario of participating in the spot electricity market, the efficiency advantage will be directly converted into the cost advantage per kilowatt-hour, so as to improve the revenue level of the project.

The Dengkou County project has deployed a total of 400 Galaxy-1-4G string-type prefabricated cabins and 100 eLink-HV35 confluence and step-up integrated units. The project adopts the "All in One" design concept, integrating 314Ah LFP batteries, BMS, string-type PCS, fire protection and thermal management systems into a 20-foot container. The string-type architecture realizes independent management at the battery cluster level, eliminates inter-cluster circulation and the "cask effect" from the source, achieves 100% charge-discharge depth, and can effectively improve the system availability and online rate.

(Image source / Enterprise)

According to the introduction, in the project construction phase, the delivery of all equipment was completed in only 60 days, and the whole station commissioning and the "3 charge and 3 discharge" verification were finished in 7 days. After being put into commercial operation, in the harsh desert environment, the online rate of the power station system is nearly 100%, and no unplanned outage caused by equipment failure has occurred.

In terms of revenue, the power station obtains spread revenue by participating in spot transactions in the Western Inner Mongolia power market, and also enjoys discharge volume subsidies. With the help of Energy Singularity's eTrader intelligent power trading operation platform, the power station can automatically generate multiple sets of declaration strategies for the next day's market and provide AI recommended solutions, and its comprehensive operation revenue in markets such as Western Inner Mongolia and Ningxia has long ranked in the top 10% of the region.