Our teams of engineers and technicians are able to carry out your design and engineering studies for your projects:

> Electrical studies

> Mechanical studies

> PLC programming

> Monitoring – Remote management

> Creation of diagrams (See Electrical, AutoCAD,)

> Creation of mechanical plans (SOLID WORKS 3D, AUTOCAD)

From the needs analysis or the specifications, our teams draw up the electrical diagrams and other production documents, develop the automation and monitoring software, conduct platform testing and attend the site to finalise the project.

The technical choices are made in order to offer a ‘tailored’ product, to guarantee the best possible performance and reliability.

We tailor your studies to your requirements.


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.