Standards of our grid

On this page, you will find the documents setting out the design, construction, and material standards for our electricity distribution network: installation regulations, approved materials lists, and reference material standards

Why do we have network standards?

We work alongside other companies and contractors to build and maintain the distribution network. To ensure all the installations comprising the network are built to the same level of quality and safety, everyone needs to follow the same design criteria and material requirements.

This task falls to our Network Standardisation Unit, which drafts and publishes the documents containing these standards.

Related to design and construction criteria of installations:

Documents on design and construction criteria

Every installation on our network must comply with regulations outlining the technical conditions needed to guarantee:

  • The correct operation of the installation.
  •  Its long-term reliability and efficiency.
  • The safety of people and property.

We have recently concluded a process to unify these regulations. The resulting documents have now been approved and published by the Ministry of Industry, Trade and Tourism, and compliance with them is mandatory across all our distribution zones.

Particular specifications for private high, medium, and low voltage installations

Particular specification and model projects for HV installations (>36 kV)

Type projects and particular specifications for MV and LV distribution installations.

Documents on materials

The materials incorporated into our network must meet minimum design requirements and pass specific testing procedures. To make these easier to consult and select, we publish two types of documents:

Related to materials:

Lists of approved materials

These contain the materials that have passed our approval process and meet our specifications. Each material is identified by the code of the standard it was approved against, broken down by brand and manufacturer model. This same code is referenced in the specific requirements, guides, and standard projects, making it easier to locate the corresponding approved material in each case.

Reference material standards

These define the minimum design requirements and testing procedures that all materials incorporated into our network must meet.

Other information

Sector and autonomies

Legislation and regulations

Find about the regulations in the regions in which e-distribución operates.