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T&D Substations

We develop full turnkey solutions, delivering medium and high-voltage substations designed internally and incorporating equipment developed in-house such as Transformers, MV Switchgear, Power Supply Systems, Grid Management, PAC Systems and covering R&D for Digital Substations.

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Electrical substation with transmission towers, insulators, and wiring in clear sky.

T&D Substations

We develop full turnkey solutions, delivering medium and high-voltage substations designed internally and incorporating equipment developed in-house such as Transformers, MV Switchgear, Power Supply Systems, Grid Management, PAC Systems and covering R&D for Digital Substations.

+60
Years of experience
>300
Substations worldwide

Up to 525 kV

Full turnkey solutions for
MV & HV substations

>30

Countries with
Efacec solutions

+60
Years of experience
>300
Substations worldwide

Up to 525 kV

Full turnkey solutions for MV & HV substations

>30

Countries with
Efacec solutions

Power-to-X

Drive the future of green energy with high-voltage substations.

Intended for Power-to-X applications, our high-voltage substations enable the production of green hydrogen and synthetic fuels for decarbonisation projects.

With innovative technology, these solutions convert electricity into sustainable fuels, paving the way for a cleaner future anchored by renewable energy.

3D representation of an electrical substation with orange insulators.

Substations for hydrogen, ammonia, and methanol projects

Renewable Generation

Seamless grid connection for renewable energy.

Our high-voltage substations are designed to integrate renewable projects with resilience and autonomy, reducing fossil fuel dependence.

Backed by our extensive expertise across all renewable sources, our solutions deliver reliable energy connection that is ready for the future.

3D representation of a substation for solar power plants, with transformers and overhead power lines

Substations for photovoltaic solar power plants

Wind farm substation with a large, green transformer at the centre. Wind turbines are visible in the background.

Wind farm substations

A large concrete dam and hydroelectric power station nestled in a rocky, mountainous landscape, with power lines extending into the background.

Substations for hydropower plants

Industry & Data Centres

Digital substations that accelerate industrial transformation.

Built to power industry and data centres, our substations include advanced digital technology, enable fast infrastructure expansion and support decarbonisation goals.

These solutions drive the shift to a sustainable industrial landscape by enhancing resilience and efficiency.

Aerial view of a power plant with large green machinery and metal structures surrounded by trees

Industry upgrading and expansion

Substation with metal structures and power lines, surrounded by a fence

Data Centres

We design and build our turnkey projects integrating products manufactured by our factories, which are recognised worldwide.

Flagship projects

3D representation of a substation with tall metal structures, orange insulators, and transformers behind a chain-link fence

Substation and power transformers for green hydrogen project | Portugal

Part of Galp’s 100 MW green hydrogen project, Efacec will supply a 150 kV AIS Substation, as well as two 160 MVA power transformers.
Aerial view of solar panels stretching across a field. In the foreground, there's a building with an orange roof and a Modular Transformer in a substation..

Substation and Modular Transformer for the Alcoutim Solar Project | Portugal

Design, delivery and installation of a 150/30 kV Viçoso substation, including the supply of a Modular Transformer as part of the substation works, capable of injecting up to 150 MVA into the electricity grid.
Substation with a large blue transformer. Metal structures and high-voltage wires are visible.

Connection of the Mina Tó photovoltaic power plant to the grid | Portugal

Supply, assembly and commissioning of a high-voltage substation with 20 MVA at 30/60 kV, as well as a 60 kV overhead line, capable of producing 45,000 MWh every year.
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