Top 10 Power Transformer Manufacturers in China 2026

China has developed one of the world’s most complete transformer supply chains, covering distribution transformers, industrial power transformers, generator step-up transformers, high-voltage units and ultra-high-voltage equipment.

However, choosing a suitable manufacturer involves more than comparing prices. Buyers must evaluate voltage and capacity range, engineering capability, testing facilities, applicable standards, customization, project references, delivery schedules and after-sales support.

Lead time has also become a major purchasing concern. In the second quarter of 2025, average US delivery times reportedly reached 128 weeks for power transformers and 143 weeks for generator step-up transformers, increasing global interest in manufacturers with available production capacity.

The following list is an editorial selection rather than an audited market-share ranking. It compares manufacturers based on publicly available product ranges, manufacturing capabilities, project experience and suitability for different buyers.

Quick Comparison of Chinese Power Transformer Manufacturers

1. Liye Electric

Liye Electric is the featured manufacturer in this 2026 guide because it combines high-voltage manufacturing capability with project-based customization and a more flexible service model for overseas buyers.

The transformer factory was established in 1970 and later became part of Shenzhen Liye Group. Today, the company specializes in the research, manufacturing and lifecycle management of transformers up to 750kV. Its product range includes medium-voltage, high-voltage, ultra-high-voltage and special transformers. The company reports more than 700 employees, including over 200 technical professionals.

Full In-House Manufacturing Capability

Liye presents dedicated manufacturing centers for:

• Transformer insulation components
• Windings
• Cores
• Oil tanks and structural components
• Transformer assembly
• Factory testing

Its equipment includes automated winding machines, CNC silicon-steel cutting lines, vapor-phase drying equipment, heavy overhead cranes and a shielded transformer testing hall. The testing hall reportedly has a partial-discharge background below 1 pC.

For buyers looking for an OEM transformer factory in China, this in-house production structure is important. It allows the factory to control more critical manufacturing stages rather than relying entirely on outsourced active parts or structural components.

Customized Power Transformer Manufacturing

Liye supplies transformer solutions covering applications such as:

• Power transmission and distribution
• Utility substations
• Photovoltaic power stations
• Wind farms
• Energy storage systems
• Hydrogen production facilities
• Data centers
• Factories and industrial substations

Its published product portfolio includes 110kV, 220kV, 330kV and 500kV power transformers, together with medium-voltage and special transformer products.

Buyers sometimes use the search phrase Customize power transformer manufacturer when looking for this service. The more natural description is a custom power transformer manufacturer. Liye can develop project-specific configurations based on capacity, voltage ratio, winding arrangement, impedance, insulation level, cooling method, loss limits and operating environment.

This makes Liye suitable for buyers who need more than a standard catalogue model, including EPC contractors, utilities, industrial users and renewable energy developers.

Standards and Quality Verification

Liye states that its products are tested against international requirements and that the company has passed quality, environmental, occupational health and safety management system certifications. Its website also displays DEKRA and ASTA type-test certificates and records product testing by China’s National Transformer Quality Inspection and Testing Center.

Buyers seeking an IEC standard power transformer manufacturer should include the exact applicable IEC 60076 parts in the technical specification. IEC 60076-1 provides general requirements for three-phase and single-phase power transformers.

For a North American project requiring an IEEE/ANSI standard transformer supplier, buyers should ask Liye to confirm compliance clause by clause. Relevant requirements may include IEEE C57.12.00 for liquid-immersed transformers and IEEE C57.12.90 for test methods.

Similarly, customers requiring an ISO certified transformer factory should request current copies of the applicable certificates and verify:

• Certificate number
• Issuing organization
• Validity period
• Certified manufacturing location
• Product and management-system scope

Delivery Capability

Liye positions itself as a fast delivery transformer manufacturer. Its website states an ultra-fast production cycle starting from approximately 25 days and claims delivery can be 50% faster than typical industry schedules.

This figure should not be treated as a universal lead time for every transformer. A customized 500kV transformer will require a very different engineering, testing and production schedule from a standard medium-voltage unit.

Anyone sourcing a short lead time power transformer should ask Liye to provide a contractual milestone plan covering:

1. Technical clarification
2. Drawing approval
3. Raw-material preparation
4. Core and winding production
5. Active-part assembly
6. Drying and oil filling
7. Factory testing
8. Packing and shipment

Liye is particularly worth considering when buyers need engineering flexibility, direct factory communication and a delivery plan aligned with a specific project schedule.

2. TBEA

TBEA is one of China’s best-known manufacturers of power transmission and transformation equipment. Its transformer portfolio covers hydropower projects, pumped-storage plants, ultra-high-voltage grids, 35kV–500kV substations, renewable energy projects, converter transformers, traction transformers and special transformers.

TBEA is particularly suitable for:

• Ultra-high-voltage grid projects
• HVDC transmission
• Large power plants
• National infrastructure
• Turnkey energy projects

Its scale and system-integration capabilities make it a strong candidate for major utility and government-backed projects. Smaller buyers should confirm whether their order size and required response time fit TBEA’s project structure.

3. China XD Group

China XD Group was established in 1959 and specializes in complete AC and DC power transmission and distribution equipment. Its transformer portfolio includes AC equipment from 6.8kV to 1100kV and converter transformers from ±110kV to ±1100kV.

Products include:

• Generator transformers
• Grid power transformers
• Oil-immersed and dry-type distribution transformers
• Traction transformers
• Furnace transformers
• Rectifier transformers
• Test transformers
• HVDC converter transformers

China XD is best suited to complex high-voltage, ultra-high-voltage and system-level projects where the buyer may also require switchgear, reactors, capacitors, control equipment or complete substation solutions.

4. Baoding Tianwei Baobian Electric

Baoding Tianwei Baobian Electric, commonly known as BTW, traces its history to Baoding Transformer Works, founded in 1958. Its products cover approximately 10kV to 1200kV, with published maximum capacity reaching 1,500MVA.

BTW manufactures:

• Large power transformers
• Generator step-up transformers
• Autotransformers
• HVDC converter transformers
• Phase-shifting transformers
• Shunt reactors
• Specialized transmission equipment

The company is a suitable choice for power-generation and transmission projects requiring very large capacity, high voltage and substantial utility experience.

5. Jiangsu Huapeng Transformer

Jiangsu Huapeng Transformer was founded in 1967. Its published range covers approximately 0.4kV to 850kV and includes oil-immersed power transformers, dry-type transformers, reactors, converter transformers, rectifier transformers and phase-shifting transformers.

Huapeng has supplied transformers to utility, renewable energy, industrial and overseas projects. Its website reports power transformers with capacities up to 2,400MVA and lists references in North America, Europe, Southeast Asia, the Middle East and Africa.

Huapeng is worth considering for buyers who prioritize:

• Large manufacturing scale
• High-voltage product coverage
• International project references
• Renewable energy transformers
• North American market experience

6. SDEE and Shandong Power Equipment

Shandong Electrical Engineering & Equipment Group, or SDEE, is affiliated with State Grid Corporation of China. Its subsidiary Shandong Power Equipment, also known as SPECO, was founded in 1958 and manufactures transformers and reactors for large power-system projects.

The company’s public profile highlights its large manufacturing site, high transformer production capacity and CNAS-accredited testing center. It is most relevant to utility buyers and EPC contractors working on high-capacity grid and transmission projects.

Because its business model is closely connected with major grid projects, overseas buyers should confirm export procedures, commercial terms and availability for their particular market.

7. CHINT

CHINT is a global electrical equipment and smart-energy group with products spanning power generation, transmission, transformation, distribution and consumption.

Its power transformer factories are located in Wuhan and Shanghai, and CHINT states that it supplies State Grid, China Southern Power Grid and international customers in more than 120 countries.

CHINT’s transformer offering includes power transformers for conventional grids and renewable energy applications. Its international sales network can be an advantage for buyers who need transformers together with switchgear, protection, control and other electrical equipment.

8. Sanbian Sci-Tech

Sanbian Sci-Tech supplies 35kV–500kV power transformers, dry-type transformers, distribution transformers and transformer products for renewable energy projects. In 2026, the company reported delivery of a customized 250MVA/400kV transformer for a Greek grid project after factory and type testing.

Sanbian is suitable for:

• 110kV–500kV grid projects
• Wind and solar substations
• Utility transmission projects
• Export power transformers
• Customized high-voltage units

Its mix of grid, distribution and renewable-energy products makes it a versatile alternative for international buyers.

9. Shandong Dachi Electric

Shandong Dachi Electric is a state-owned high-tech enterprise specializing in power transmission and transformation equipment. Its publicly listed range includes oil-immersed power transformers up to the 550kV class and dry-type transformers for medium-voltage applications.

Dachi is primarily suited to:

• High-voltage substations
• Utility transmission projects
• Power plants
• Large industrial facilities
• Grid expansion projects

Buyers should request recent export references, applicable international certificates and detailed factory-testing capabilities for the proposed transformer model.

10. Shenda Electric Group

Shenda Electric Group focuses on power transformers and special industrial transformer solutions. Its published range includes oil-immersed power transformers up to 250MVA/330kV, dry-type transformers, rectifier transformers and large electric-furnace transformers.

Shenda stands out as an industrial transformer manufacturing company, particularly for:

• Steel plants
• Electric arc furnaces
• Smelting facilities
• Rectifier systems
• Mining and metallurgical projects
• Heavy industrial substations

Buyers requiring highly specialized load profiles may find Shenda more relevant than manufacturers focused mainly on conventional utility transformers.

How to Choose a Power Transformer Manufacturer in China

A well-known brand is not automatically the best supplier for every project. The correct manufacturer depends on the transformer’s technical complexity, order quantity, destination market and required service scope.

Confirm the Manufacturer’s Real Voltage Capability

Do not rely only on the maximum voltage shown on a homepage. Ask for:

• Type-test reports for a similar model
• Reference lists at the required voltage
• Manufacturing and testing equipment
• Maximum test voltage
• Partial-discharge background
• Short-circuit test history
• Similar units already in service

A factory that has manufactured one prototype at a particular voltage may not have the same repeat-production experience as a supplier with numerous operating references.

Submit a Complete Technical Specification

An effective RFQ should include:

• Rated power
• Primary and secondary voltage
• System frequency
• Number of phases
• Winding configuration
• Vector group
• Tap changer and adjustment range
• Short-circuit impedance
• Cooling method
• Insulation levels
• Maximum permitted losses
• Noise limit
• Ambient temperature and altitude
• Applicable IEC or IEEE standards
• Required accessories
• Testing and documentation scope
• Delivery destination

Incomplete inquiries usually produce inaccurate quotations and repeated technical clarification.

Compare Lifecycle Cost, Not Only Purchase Price

The lowest-priced transformer may have higher no-load loss, load loss or auxiliary cooling consumption. Buyers should compare:

• Guaranteed losses
• Expected annual loading
• Energy cost
• Maintenance requirements
• Spare-parts availability
• Warranty terms
• Design life
• Failure-response capability

This is especially important for transformers operating continuously in factories, data centers, renewable energy plants and utility substations.

Verify Delivery Before Placing the Order

Ask the supplier to separate:

• Engineering lead time
• Drawing-approval time
• Manufacturing time
• Factory-testing time
• Packing time
• Inland transport
• Sea freight
• Site assembly and commissioning

A promised factory completion date is not the same as the transformer’s required on-site delivery date.

Why Consider Liye for a Customized Transformer Project?

Large state-owned manufacturers are strong choices for national grids and ultra-large transmission projects. However, overseas buyers often need faster communication, flexible engineering, moderate order quantities and customization according to local conditions.

Liye offers a useful balance of:

• Manufacturing capability up to 750kV
• In-house core, winding, tank and insulation production
• A dedicated high-voltage testing facility
• Customized engineering
• Renewable energy and industrial project experience
• International certification and testing records
• Direct factory communication
• Potentially shorter production cycles

Liye can customize power transformers according to voltage, capacity, winding configuration, impedance, cooling, loss requirements, installation conditions and applicable project standards.

Conclusion

China’s transformer industry includes very large state-owned groups, high-voltage specialists, internationally oriented private manufacturers and industrial transformer producers.

TBEA, China XD and BTW are especially strong in ultra-high-voltage and major grid projects. Huapeng, CHINT and Sanbian offer broad product portfolios and international project experience. Shenda is particularly relevant to industrial and furnace transformer applications.

For customers seeking a responsive OEM transformer factory in China, Liye provides an attractive combination of high-voltage capability, custom engineering, in-house production and project support.

Send Liye your power transformer data sheet, single-line diagram or tender specification. Its engineering team can evaluate the application and recommend a customized power transformer configuration, testing plan, production schedule and quotation.