Power delivered intelligently and efficiently to clients

Solutions for electricity transmission and distribution (from low to very high voltage), electricity generation (development and construction of substations) and, moreover, energy management (visible and measurable network).

Power Substation

Construction and installation of substations in turnkey model or within the structure of the General Electrical Installation VHV/ MV/LV

Network Operations - Power

We implement and operate VHV, HV, MV and LV lines

Distributed Generation

We provide energy efficiency solutions using the self-consumption model or small production units

Fiber solutions for overhead cable networks

We develop fiber solutions for aerial transmission lines

Network Engineering - Power

Infrastructure projects of power transmission and distribution lines

Fixed Nework Operations

From the heavy lifting to the more meticulous work, we cover all phases of fiber optic implementation

Mobile Network Operations

We work withall technologies: GSM, DSC, UMTS, WIFI, LTE, GSM-R, 5G

Data Center

Proef designs and implements data centre infrastructures for all industries

Network Operations Center (NOC)

Monitor, identify, investigate, prioritize, and resolve issues that may affect the network

eneida DeepGrid®

Collaborative IoT platform to remotely and online optimize the condition and operation of critical network assets


Reinforced telecommunications antenna able to "survive" forest fires


We provide mobile power generators for emergencies


Industrial maintenance tool using augmented reality

Photovoltaic Farms

We provide the market with the best integrated solutions in the production of energy from renewable sources (solar, wind, hydro)

Wind Energy

We provide the market with the best integrated solutions in the production of energy from renewable sources (solar, wind, hydro)


Direct sales and distribution of telecommunications and energy products and services to the residential and business segment


Enline is a software that uses "digital twin” concept and manages all the assets related to power transmission systems
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Success Stories

Because the success of our customers is also ours.

Proef Ecosystem

An ecosystem that goes far beyond simple connectivity.

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News See all
Improvement of telecommunications infrastructures in Angola
Telecom Power Cities Corporate
16 April 2021 Proef is working with Unitel, the largest Angolan telecommunications operator, to improve its telecommunications stations' energy efficiency.
Proef-MMCI Partnership
Telecom Power Cities Corporate
16 April 2021 With confidence and optimism in the Portugal telecommunications market's future, Proef established a partnership with MMCI Multimédia.
Proef seals partnership with EnBW
Power Cities Corporate
15 April 2021 Proef and EnBW, the third largest energy supplier in Germany, took another step in their relationship through a two-year partnership agreement.
Proef is involved in Galp's first solar project in Portugal
20 May 2021 Galp starts the construction of its first large-scale photovoltaic solar energy project in Portugal, in the Municipality of Alcoutim. Proef's mission is to build a very high voltage (150kV) line.
A new project of overhead power lines in Sines
09 June 2021 Proef, in partnership with Geometric Talks, is involved in the engineering project for the 30kV and 400kV overhead power lines of the Morgavel Wind Farm, in Sines.
Proef's summer internship program is back!
Telecom Power Cities Corporate
21 June 2021 Proef's summer internship program is back and will feature students that want to have the first experience in the labor market.
Excellence awards - Electrotechnics technical course
Telecom Power Cities Corporate
05 July 2021 Proef rewards the best student from de electrotechnics technical course of the D. Sancho I school, for the 2nd year in a row.
21 July 2021 Proef is working alongside EDP Renováveis in the construction of the High and Very High Voltage lines of the Sincelo Wind Farm.
Eurico Ferreira Academy
Power Corporate
08 September 2021 Eurico Ferreira Academy keeps surprising in 2021 and trains 313 trainees in the areas of energy and telecommunications.