On September 22, Hangjiashuo Energy discovered that NVIDIA's official website has updated a new certification program—NVIDIA DSX Ready, which helps enterprises identify specific products and solutions that have completed the specific qualification certification requirements for the AI factory infrastructure/data center category. Meanwhile, the Battery Energy Storage System (BESS) has become a crucial component of this certification program.
NVIDIA's official website shows that currently, there are three energy storage companies that have obtained the NVIDIA DSX Ready BESS certification, namely Hitachi Energy from Japan, LG Energy Solution from South Korea, and Tesla from the United States.
Hitachi Energy, LG, and Tesla Obtain DSX Ready BESS Certification
DSX Ready aims to help customers find co-designed solutions with NVIDIA DSX, reduce integration risks, and select trusted building blocks to support reliable and efficient AI factory/data center operations. This certification program includes two parts: DSX Ready CDU (qualified Coolant Distribution Unit) and DSX Ready BESS (qualified Battery Energy Storage System).
For BESS providers, partners need to run the specified certification tests and submit supporting data within the defined certification boundaries for NVIDIA's review and approval; passing the certification does not replace site-level engineering, nor does it imply site-level stability. For CDU providers, this pathway uses a CDU self-certification kit to determine whether a specific product meets the applicable NVIDIA functional requirements.
Currently, a total of six companies have obtained the DSX Ready certification: for the DSX Ready BESS part, there are Hitachi Energy from Japan, LG Energy Solution from South Korea, and Tesla from the United States; for the DSX Ready CDU part, there are LG Electronics from South Korea, LiquidStack from the United States, and Vertiv.
Hangjiashuo Energy further inquired and found that, focusing on BESS, the certified BESS products and core parameters of the three companies are as follows:
The certified BESS model for Hitachi Energy is the Hitachi Energy BESS (WD4 PCS + battery energy storage), with a power of 5MW and an energy storage capacity of 10MWh. This product combines the WD4 liquid-cooled PCS with a flexible modular system architecture, thereby providing energy storage solutions for scenarios such as AIDC that can cope with complex grid conditions, support various advanced applications, and are easy to scale.
The certified BESS model for LG Energy Solution is the LGES Verttech JF2 2HR/4HR AC LINK, with a power of 5MW and an energy storage capacity of 10MWh. This product is equipped with lithium iron phosphate batteries and adopts a modular design, allowing flexible addition of equipment according to the expansion needs of the data center.
The certified BESS model for Tesla is the Tesla Megapack 2XL, with a power of 1.93MW and an energy storage capacity of 3.85MWh. This product is Tesla's current main utility-scale energy storage product, with a single unit integrating battery modules, inverters, thermal management, and control systems.
Why These Three Companies?
After the announcement of the NVIDIA DSX Ready BESS certification list, two questions arise: Why Hitachi Energy, LG Energy Solution, and Tesla? Will there be other companies in the future?
Here is a key fact: NVIDIA officially used the expression "At launch" in its blog and explicitly stated, "Additional categories across infrastructure and software will be rolled out over time." This means that BESS is one of the certification categories at the launch of DSX Ready, and the current three companies are the first batch of qualified suppliers, not the final list. The expansion of subsequent batches is highly probable, but the specific timetable and project details have not yet been announced.
To understand why these three companies are in the first batch, it is necessary to first understand the certification requirements. According to previous reports by Hangjiashuo Energy, NVIDIA has explicitly listed 10 core requirements in the BESS self-certification guide, representing the minimum capability threshold required to pass the certification (see the table below).
To meet the above core requirements, the certification guide defines 12 mandatory tests for BESS (see the table below for details), covering hardware testing and model-based simulation analysis. At the same time, the test instruments must meet strict accuracy requirements, such as voltage and current ±0.2%, power ±0.5%, frequency ±0.01Hz, and inter-channel time synchronization ±1ms. Among these 12 tests, the performance assessment of the Power Conversion System (PCS) is particularly prominent, but the certification does not only examine the PCS; it also covers dimensions such as business readiness, supply chain, and quality system.
Looking at the three companies from the perspective of certification requirements, their commonality lies in: they all have long-term accumulation in grid control algorithms and grid-forming capabilities of the PCS. The integrated architecture of Tesla's Megapack 2XL, the AI load buffering capability of LG Energy Solution's JF2 AC Link, and the grid-forming/grid-following dual mode of Hitachi Energy's WD4 PCS are all key to taking the lead in crossing the technical threshold.
These three also possess strong implementation capabilities in the North American market. Hitachi Energy has accumulated experience in energy storage grid connection and system integration in North American AI data center microgrid projects. LG Energy Solution plans to build a total of over 50GWh of lithium iron phosphate battery cell capacity in North America by the end of 2026. Its Lansing, Michigan plant has an annual capacity of over 35GWh, and 80% of its global energy storage battery capacity will be concentrated in North America. Tesla's new Megafactory near Houston, Texas, has an annual capacity of 50GWh and has officially started production of Megapack 3. Moreover, by jointly building a domestic LFP cell factory in the United States with LG Energy Solution, it has further strengthened the closed-loop local supply chain from cells to systems.
For other energy storage companies, if they want to enter subsequent batches, they first need to evaluate whether their own PCS capabilities in grid-forming, dynamic response, SOC control, and other aspects meet the standards against the above 10 core requirements and 12 tests—this is an important technical prerequisite for obtaining the certification.
Note: The content of this article is only for sorting out public information in the energy storage industry, industrial research, and objective analysis. The listed companies mentioned in the article are only for reference as industry chain cases and do not serve as any investment basis. The market has risks, and investment needs to be cautious.