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We
transform
energy

We design and manufacture high-performance, water-cooled transformers and wound magnetic cores engineered for efficiency, reliability, and adaptability.

Learn about ELESA
Products
ELESA products

Solutions for energy transformation and management

Two product lines developed through more than four decades of experience and technical expertise.

Wound
magnetic cores

Magnetic cores manufactured in a range of geometries and configurations, tailored to each application.
amorfos rectangulares - ELESA

Water-cooled transformers

High-power industrial transformers offering high efficiency, reliability and thermal dissipation capacity.
transformadores resistencia spot welding - ELESA
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ELESA industries

Technology for different
industries and applications

ELESA delivers advanced technologies for energy transformation, conversion, measurement, and management across a wide range of industrial and energy sectors.
Instrumentation and Measurement
icono instrumentacion medida - ELESA
icono sector energia renovable - ELESA
Renewable energy
Medical
icono sector medicina - ELESA
Railway
icono sector ferroviario - ELESA
E-Mobility
icono sector e mobility - ELESA
Automotive
icono sector automocion - ELESA
Industry
icono sector industria - ELESA
Construction
icono sector construccion - ELESA
Aerospace
icono sector aeronautica - ELESA
Why ELESA

A way of working
focused on each project

Every project presents unique requirements. ELESA combines technical expertise, adaptability and direct customer collaboration to develop the most appropriate solution for each application.
Discover why ELESA
Flexibility
Technical and manufacturing capabilities to adapt to specific requirements, even beyond conventional standards.
Co-engineering
Collaboration with customers to define and develop solutions tailored to the requirements of each project.

Expertise

Knowledge developed across two product lines and applied to different configurations, materials and applications.

Support

Direct technical support from the initial project definition through to manufacturing and delivery.

+40 years

of experience

7.000 m²

Manufacturing facilities in Itziar-Deba

40 countries

International presence

2 product lines

Wound magnetic cores and water-cooled transformers

ELESA
in figures

Since 1988, ELESA has evolved and expanded its operations, building strong expertise in its two main product lines: water-cooled transformers and wound magnetic cores.
More about ELESA

Pol. Ind. Itziar
Nave Nº9D, Parcela 7-1D
20829 Deba
Gipuzkoa (Spain)

Products

Wound magnetic cores

Water-cooled transformers

ELESA
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