Top 10 Transformer Manufacturers in Mexico and Notable International Brands

Top transformer manufacturers in Mexico including international brands producing electrical transformers for industrial and commercial use.

Transformers are essential components in Mexico’s power systems and industrial infrastructure. They play a crucial role in high-voltage transmission, medium- and low-voltage distribution, and industrial power supply, ensuring reliable electricity delivery, improving energy efficiency, and protecting equipment.

With Mexico’s economic expansion, industrial park development, and the growth of renewable energy projects, the demand for transformers continues to rise, particularly for high-efficiency, environmentally friendly, and smart technologies.

Mexico boasts a range of well-established local transformer manufacturers with extensive experience, serving power utilities, industrial enterprises, and infrastructure projects nationwide. At the same time, international manufacturers have begun entering the Mexican market, offering advanced technologies and global expertise.

This article provides an in-depth look at the top 10 local transformer manufacturers in Mexico, including their technical capabilities, product ranges, and applications. We also briefly introduce Energy Transformer, a leading Chinese manufacturer, to highlight international technology options complementing local expertise.

Top 10 Local Transformer Manufacturers in Mexico (Technical Overview)

1. Grupo Trafo

Grupo Trafo, founded in 1990, is one of Mexico’s leading transformer manufacturers, offering solutions across high-voltage transmission, medium-voltage distribution, and industrial applications.

  • Transformer Types: Dry-type, oil-immersed, pad-mounted, and custom industrial transformers

  • Voltage Range: 0.4 kV – 230 kV

  • Capacity Range: 50 kVA – 50 MVA

  • Efficiency: >98% typical for medium-voltage units

  • Applications: Industrial plants, commercial complexes, municipal utilities

  • Technical Highlights:

    • Customized tap changers for precise voltage regulation

    • High-temperature insulation for heavy-duty industrial environments

    • Compliance with NOM (Mexican Official Standards), IEC, and IEEE standards

Grupo Trafo also provides full lifecycle services including installation, commissioning, predictive maintenance, and retrofitting, making it a trusted partner for industrial and utility clients.

2. Transformadores y Servicios Industriales (TSI)

TSI specializes in industrial and high-voltage transformers with over 30 years of engineering expertise.

  • Transformer Types: Dry-type, oil-immersed, autotransformers, specialty industrial units

  • Voltage Range: 1 kV – 132 kV

  • Capacity Range: 100 kVA – 40 MVA

  • Efficiency: Up to 99% for medium-voltage applications

  • Applications: Power plants, manufacturing facilities, large infrastructure projects

  • Technical Highlights:

    • Advanced insulation systems for high ambient temperatures

    • Low-loss core design for energy efficiency

    • Optional intelligent monitoring systems for online diagnostics and fault detection

TSI provides turnkey solutions including design, testing, installation, and maintenance.

3. TrafoMex

TrafoMex focuses on small- and medium-sized dry-type and oil-immersed transformers for industrial and commercial applications.

  • Transformer Types: Dry-type, oil-immersed, compact distribution transformers

  • Voltage Range: 0.4 kV – 69 kV

  • Capacity Range: 30 kVA – 20 MVA

  • Efficiency: 97–98.5% depending on voltage class

  • Applications: Manufacturing plants, commercial buildings, industrial parks

  • Technical Highlights:

    • Energy-efficient designs with low no-load and load losses

    • Customized tap changers for precise voltage control

    • Compact footprint suitable for indoor and outdoor installation

TrafoMex provides end-to-end services from design to maintenance for reliable power distribution.

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4. Industrias Transformadoras de México

Industrias Transformadoras de México has a long history in transformer manufacturing, serving domestic and Latin American markets.

  • Transformer Types: Distribution transformers, high-voltage power transformers, specialty industrial units

  • Voltage Range: 0.4 kV – 230 kV

  • Capacity Range: 50 kVA – 60 MVA

  • Efficiency: >98% for industrial and commercial transformers

  • Applications: Utility networks, industrial plants, commercial infrastructure

  • Technical Highlights:

    • Durable cores and windings for heavy-duty environments

    • Compliance with IEC, IEEE, and NOM standards

    • Optional monitoring systems for predictive maintenance

Their transformers are widely used where reliability and long service life are critical.

5. ElectroTransformadores S.A.

ElectroTransformadores S.A. is known for providing high- and medium-voltage transformers with integrated services.

  • Transformer Types: Oil-immersed, dry-type, industrial and power transformers, autotransformers

  • Voltage Range: 1 kV – 230 kV

  • Capacity Range: 100 kVA – 50 MVA

  • Efficiency: >98.5% for medium-voltage units

  • Applications: Utilities, industrial plants, large commercial complexes

  • Technical Highlights:

    • Advanced tap changers for precise voltage regulation

    • High-temperature insulation and low-loss cores

    • Optional smart monitoring solutions

ElectroTransformadores S.A. provides full lifecycle services, including installation, testing, maintenance, and retrofitting.

6. Transformadores Industriales de Occidente (TIO)

TIO serves western Mexico’s industrial sector, producing dry-type and oil-immersed industrial transformers.

  • Transformer Types: Medium-voltage, high-voltage, specialty industrial transformers

  • Voltage Range: 1 kV – 132 kV

  • Capacity Range: 50 kVA – 30 MVA

  • Efficiency: >97.5%

  • Applications: Manufacturing, petrochemical plants, heavy industry

  • Technical Highlights:

    • High-temperature resistant insulation systems

    • Low-loss cores for energy efficiency

    • Optional remote monitoring for industrial applications

TIO has over 25 years of experience and a solid reputation in western Mexico.

7. TrafoCenter

TrafoCenter specializes in medium and small industrial and commercial transformers, emphasizing rapid delivery and flexible solutions.

  • Transformer Types: Dry-type, oil-immersed, custom industrial transformers

  • Voltage Range: 0.4 kV – 69 kV

  • Capacity Range: 50 kVA – 15 MVA

  • Efficiency: 97–98%

  • Applications: Small to medium industrial facilities, commercial buildings

  • Technical Highlights:

    • Short production cycles with customized design

    • Compact design for constrained installation spaces

    • Maintenance-friendly construction

8. Transformadores del Norte

Transformadores del Norte serves northern Mexico, providing high-performance distribution and industrial transformers.

  • Transformer Types: Distribution transformers, dry-type, oil-immersed, medium- and high-voltage units

  • Voltage Range: 0.4 kV – 132 kV

  • Capacity Range: 30 kVA – 25 MVA

  • Efficiency: >97.5%

  • Applications: Industrial enterprises, infrastructure projects in northern Mexico

  • Technical Highlights:

    • High-efficiency core design, low-loss performance

    • Heat-resistant insulation

    • Compliance with NOM and IEC standards

9. ElectroTrafo

ElectroTrafo provides high-, medium-voltage, and distribution transformers with industrial-grade reliability.

  • Transformer Types: Dry-type, oil-immersed, industrial transformers, autotransformers

  • Voltage Range: 0.4 kV – 132 kV

  • Capacity Range: 50 kVA – 35 MVA

  • Efficiency: 97.5–98.5%

  • Applications: Utilities, industrial parks, commercial projects

  • Technical Highlights:

    • Low-loss design for energy efficiency

    • Optional online monitoring and diagnostics

    • Compliance with IEC and IEEE standards

10. TransMex

TransMex is a well-known Mexican brand focusing on industrial and commercial distribution transformers.

  • Transformer Types: Dry-type, oil-immersed, high-voltage, custom transformers

  • Voltage Range: 0.4 kV – 132 kV

  • Capacity Range: 50 kVA – 30 MVA

  • Efficiency: 97–98.5%

  • Applications: Factories, commercial complexes, utilities

  • Technical Highlights:

    • High-reliability and long-life designs

    • Energy-efficient transformers with low losses

    • Optional smart monitoring features

TransMex combines reliability, comprehensive services, and strong local presence.

International Brands in Mexico: Energy Transformer

While these ten manufacturers dominate the local market, international brands such as Energy Transformer from China are gradually entering Mexico, offering advanced technologies and global experience.

  • Transformer Types: High-voltage, medium-voltage, dry-type, oil-immersed, autotransformers

  • Voltage Range: 1 kV – 330 kV

  • Capacity Range: 100 kVA – 100 MVA

  • Efficiency: Up to 99%

  • Applications: Industrial complexes, renewable energy projects, utilities

  • Technical Highlights:

    • Advanced materials for improved insulation and reduced losses

    • Smart monitoring and IoT-enabled transformers for predictive maintenance

    • Global project experience ensures reliability in large-scale projects

Energy Transformer provides complementary technology and expertise to local manufacturers, supporting advanced industrial and infrastructure projects.

Industry Trends and Outlook

  1. Renewable Energy Growth: Wind, solar, and distributed energy systems increase demand for energy-efficient and smart transformers.

  2. Smart and Intelligent Solutions: Online monitoring, automated protection, and predictive maintenance become standard.

  3. Local-International Collaboration: Partnerships with international manufacturers enhance technical capabilities and supply chain efficiency.

  4. Environmental and Energy Standards: Eco-friendly materials and high-efficiency designs are increasingly required.

Local manufacturers remain the backbone of domestic projects, while international brands like Energy Transformer provide advanced technical solutions.

Conclusion

Mexico has a strong base of local transformer manufacturers, including Grupo Trafo, TSI, TrafoMex, Industrias Transformadoras de México, ElectroTransformadores S.A., TIO, TrafoCenter, Transformadores del Norte, ElectroTrafo, and TransMex. They provide reliable, customized transformers and full-service solutions for utilities, industrial, and commercial applications.

International manufacturers such as Energy Transformer introduce advanced technology and global project experience, offering complementary options for large-scale or specialized projects.

By combining local expertise with international technology, Mexican clients can achieve efficient, reliable, and sustainable power solutions.

    Energy Transformer
    Energy Transformer

    Energy Transformer is a trusted manufacturer of power and distribution transformers ranging from 10 kVA to 1200 MVA and up to 500 kV. We supply oil-immersed, dry-type, pad-mounted, pole-mounted transformers, and compact substations. Certified to IEC, ANSI, CE, UL, CSA, ISO, and KEMA standards, we support OEM, ODM, and SKD services with fast delivery and factory-direct pricing for clients worldwide.