Electrical manufacturing:

Our cable assembly workshop established in LAXOU (54) enables us to produce all sorts of low-voltage power or automation electrical cabinets.

Since our development teams specialise in the Water and Energy fields, we can offer equipment which is perfectly tailored to our customers’ constraints, however powerful their installation.

We also have, with GERAL, one of the biggest manufacturing and assembly workshops in France and a large capacity for development and production.

Thanks to this association between the companies in the Gérard Perrier Industrie group, we are able to offer even more effective and competitive solutions.

Mechanical manufacturing:

Almost 100 hydroelectric power plants in France can trace their origins back to our workshop in the Vosges. Everything we manufacture – whether renovations or new constructions – is made in this workshop, allowing us to offer high-quality ‘Made in Lorraine’ solutions.


Example of THA assembly :

High-quality ‘Made in Lorraine’ products

Energy, renewable energy, water industry, hydroelectric, ...


The Er3i teams accompany you throughout the life of your projects.


The company

Design, manufacture, installation and commissioning of electrical and mechanical equipment for Energy and the Environment.