Ningbo Aux Wins $132 M US Data Centre Transformer Order
Project Overview: USD 132 M Oil-Immersed Transformer Order Lands
On 23 September 2026, Ningbo Samsung Electric Co., Ltd. announced that its wholly owned subsidiary, Ningbo Aux Smart Technology Co., Ltd., had won a bid for a US data centre energy storage oil-immersed transformer project. The contract is valued at approximately USD 132 million (CNY 885 million).
The order accounts for 6.16 % of Ningbo Samsung Electric’s audited 2025 revenue. While the headline figure sits in the mid-range for utility-grade equipment contracts, the strategic value is meaningful: this marks Ningbo Aux Smart Technology’s first confirmed entry into the US data centre segment of its overseas power distribution business.
Transaction Core Elements
Contract Value and Reporting Basis
The disclosed contract value is USD 132 M (CNY 885 M). The original filing does not break down per-unit pricing, but a back-of-envelope calculation from the 6.16 % revenue ratio suggests Ningbo Samsung Electric’s 2025 audited revenue is in the order of CNY 14.3 billion, positioning the company as a mid-tier power distribution equipment manufacturer in the Chinese A-share market (stock code 601567.SH).
For a parallel case of AI data centre transformer procurement, see our earlier coverage of Hyosung’s USD 286 M AI data centre transformer order.
Equipment Type and Application
The filing specifies oil-immersed transformers for a US data centre energy storage application. In modern data centre architectures, oil-immersed transformers typically serve two roles. First, they provide the medium-voltage step-up interface between battery energy storage system (BESS) bidirectional converters and the MV distribution bus. Second, they couple on-site diesel rotary UPS or generator sets with utility feed.
Project Location and Customer Disclosure
The announcement confirms the project is located in the United States but does not name the end customer. Industry practice suggests the buyer is either a hyperscaler, a colocation operator, or a specialised energy storage integrator, with procurement typically routed through an EPC contractor or direct-purchase agreement.
Ningbo Samsung Electric: Corporate Structure
For broader context on hyperscaler supply patterns and data centre transformer specifications, see our archive on data centre transformer developments.
Core Business Portfolio
Ningbo Samsung Electric has long operated in smart distribution grids and renewable-energy-adjacent power equipment. The product range spans distribution transformers, pad-mounted substations, smart meters, and energy storage integration hardware. In the A-share market, the company is classified under transmission and distribution equipment and grid hardware manufacturers.
Role of Aux Smart Technology
The contracting entity, Ningbo Aux Smart Technology, functions as the company’s vehicle for energy storage and new energy market expansion. The subsidiary targets data centre, commercial-and-industrial storage, and residential storage applications, complementing the parent company’s broader power distribution equipment portfolio.
What 6.16 % Revenue Share Signals
For a company with roughly CNY 14 billion in annual revenue, a single 6.16 % order is not transformative on its own. What it does signal is structural: a first confirmed US data centre contract indicates that Ningbo Aux Smart Technology has cleared the vendor qualification process, completed required certifications, and built sufficient delivery credibility to compete for follow-on orders from the same buyer pool.
For an industry perspective on conductor selection criteria relevant to large power transformer winding design, see the related coverage on how to choose the right enameled wire for motor and transformer applications.
Data Centre Power Distribution Demand Shift
AI Workload Drives Density Up
Since 2024, generative AI training cluster expansion has pushed per-rack power density from the traditional 6–10 kW range to 30–80 kW. Transformer, switchgear, and busway demand at GW-scale campuses has scaled accordingly. BloombergNEF estimates that US data centre transformer procurement has risen from roughly USD 600 million in 2022 to nearly USD 1.8 billion in 2025.
Role of BESS-Coupled Transformers
Battery energy storage systems in data centres perform peak shaving, backup duty, and demand response functions. BESS step-up transformers must handle high-frequency charge-discharge cycling, harmonic-rich currents, and elevated thermal stress. Specifying typically requires Class F or higher thermal ratings and reinforced insulation systems, which differ from standard distribution transformer designs.
Oil-Immersed Versus Dry-Type
Data centre interior rooms favour dry-type transformers because of fire suppression and floor-loading constraints. However, BESS step-up transformers are generally rated 5 MVA and above, and they are usually installed outdoors or in dedicated electrical rooms, where oil-immersed designs remain the default. The Aux Smart Technology supply aligns with this typical deployment pattern.
US Market Entry Barriers
Certification Stack
US power equipment certifications span UL, IEEE, ANSI, and CSA standards. Oil-immersed transformers must clear DOE energy-efficiency compliance under 10 CFR 431, UL 1561 safety testing, and the IEEE C57.12.00 series for power transformers. For Chinese manufacturers, the typical certification timeline runs 18 to 36 months before commercial shipment.
Channel and Pre-Sales Infrastructure
Hyperscaler and large colocation buyers run stringent vendor qualification processes. Suppliers must demonstrate 5–10 years of comparable project references, on-site engineering capacity, and 24/7 emergency response. Ningbo Aux Smart Technology’s confirmed order indicates it has cleared the standard vendor qualification gate for this buyer.
Tariff and Localisation Pressure
US tariff policy on Chinese power equipment remained in flux through 2026. Several hyperscalers have already required transformer suppliers to operate final assembly in Mexico, Thailand, or the United States to mitigate tariff exposure. The current announcement does not specify whether Aux Smart Technology’s supply involves any local assembly arrangement, a question worth watching in subsequent filings.
Implications for Chinese T&D Equipment Export
Mid-Tier Order, High Signal Value
Compared with the gigawatt-hour-scale storage orders captured domestically, a USD 132 M US data centre transformer contract is mid-sized in absolute terms. The symbolic value, however, is the step from domestic storage supply chain into the hyperscaler procurement tier. For peer Chinese manufacturers such as TBEA, Mingyang Smart Energy, and Inovance, this represents a working template.
Supply Chain Bundling Opportunity
Data centre transformer orders typically pull through adjacent demand for busway, switchgear, UPS, and PDU. Chinese vendors that can package the full MV-LV distribution scope can materially increase single-project revenue share. The current announcement covers transformers only, but downstream EPC coordination opportunities should be tracked.
Risks and Headwinds
US data centre projects run 18 to 30 months from award to commissioning, which stretches working capital and demands strong remote commissioning capability. Raw material volatility in grain-oriented electrical steel, copper winding wire, and transformer oil can compress margins. Watch for hedging mechanisms and performance bond disclosures in subsequent filings from Ningbo Samsung Electric.
Conclusion
Ningbo Aux Smart Technology’s USD 132 M oil-immersed transformer order for a US data centre energy storage project is one of the representative cases of Chinese transmission and distribution equipment vendors entering the US AI data centre supply chain in the second half of 2026. The contract size is mid-tier by industry standards, but the strategic value lies in what it signals: a working foothold in hyperscaler procurement pipelines. As AI data centre construction enters its second expansion wave, accumulated capability in certification, channel development, and localisation will become the decisive variables for the next phase of competition.
Project Snapshot
| Field | Value |
|---|---|
| Awarded Entity | Ningbo Aux Smart Technology Co., Ltd. |
| Parent Company | Ningbo Samsung Electric Co., Ltd. |
| Award Announcement | 2026-09-23 |
| Project Location | USA |
| Application | Data centre energy storage |
| Equipment | Oil-immersed transformer |
| Contract Value | USD 132 M / CNY 885 M |
| Share of Parent 2025 Revenue | 6.16 % |
| Strategic Tag | First US data centre order |