Company lists · Data refreshed September 2026

Top 25 Electrical systems integration contractors based in Portugal

Name: Electrical systems integration contractors based in Portugal
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 315 companies tracked

RevenueBase identified 315 electrical systems integration contractors headquartered in Portugal as of September 2026 and tracks 3,281 professional contacts across them, including 846 with verified work emails and 135 with mobile numbers. Braga is the largest hub.

This list covers electrical systems integration contractors headquartered in Portugal, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 29, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 29, 2026 86% judged on-target in blind review

315Companies

3,281Contacts tracked

846Verified emails

135Mobile numbers

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The 25 largest electrical systems integration contractors based in Portugal

Ranked by team size

Top 25 of 315 electrical systems integration contractors based in Portugal, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to electrical systems integration contractors: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Est, S.A	Indirect evidence	Leiria, PortugalHQ checked Sep 29, 2026	51-200	551 contacts →
	Indirect evidence “EST - Empresa Serviços Técnicos, S.A.” Source: RevenueBase Database · checked Sep 29, 2026
2	Sotécnica	Partial evidence	Loures, PortugalHQ checked Sep 29, 2026	501-1,000	295 contacts →
	Partial evidence “Sotécnica, a brand of VINCI Energies, is an integrated engineering solutions company and a multi-technical team in the areas of Electrical Installations, Technical Installations…” Source: RevenueBase Database · checked Sep 29, 2026
3	Grupo Ramos Ferreira Engenharia	Indirect evidence	Vila Nova De Gaia, PortugalHQ checked Sep 29, 2026	201-500	188 contacts →
	Indirect evidence “This is our engineering of success, an act of future creation.” Source: RevenueBase Database · checked Sep 29, 2026
4	TCPI	Indirect evidence	Porto Salvo, PortugalHQ checked Sep 29, 2026	201-500	166 contacts →
	Indirect evidence “We are an international E&I Engineering, Construction and Maintenance company operating worldwide.” Source: RevenueBase Database · checked Sep 29, 2026
5	DTE	Indirect evidence	Braga, PortugalHQ checked Sep 29, 2026	51-200	155 contacts →
	Indirect evidence “Acompanhando a constante evolução tecnológica e os novos modos de vida, a dte orgulha-se de ser uma das empresas nacionais de referência na instalação de infraestruturas e…” Source: RevenueBase Database · checked Sep 29, 2026
6	Sisint	Strong evidence	Canelas, PortugalHQ checked Sep 29, 2026	51-200	84 contacts →
	Strong evidence “Leadership in the equipments and electrical systems for the innovation, competitiveness, service, quality and respect for the Environment and Security.” Source: RevenueBase Database · checked Sep 29, 2026
7	F.Fonseca S.A	Indirect evidence	Aveiro, PortugalHQ checked Sep 29, 2026	51-200	67 contacts →
	Indirect evidence “A F.Fonseca é uma empresa sediada em Aveiro, que comercializa diversos tipos de componentes e equipamentos elétricos e eletrónicos dos melhores fabricantes mundiais, prestando…” Source: RevenueBase Database · checked Sep 29, 2026
8	ATENA	Partial evidence	Palhaça, PortugalHQ checked Sep 29, 2026	51-200	52 contacts →
	Partial evidence “Automation and industrial control projects- Programmable automata - Numerical Drives / Commands - Industrial Computing - Mecânica de precisão - Mechanical and Electrical Project -…” Source: RevenueBase Database · checked Sep 29, 2026
9	Microprocessador	Indirect evidence	Perafita, PortugalHQ checked Sep 29, 2026	51-200	49 contacts →
	Indirect evidence “We are experts in automation solutions and software development.” Source: RevenueBase Database · checked Sep 29, 2026
10	Pemel Instalações	Indirect evidence	Leça Do Balio, PortugalHQ checked Sep 29, 2026	51-200	45 contacts →
	Indirect evidence “A PEMEL Instalações é uma empresa especializada em soluções eletromecânicas integradas, atuando nas áreas de instalações elétricas, AVAC e hidráulica.” Source: RevenueBase Database · checked Sep 29, 2026
11	Electro-Minho	Indirect evidence	Viana Do Castelo, PortugalHQ checked Sep 29, 2026	201-500	36 contacts →
	Indirect evidence “Fundada em 1955, a Electro-Minho, Lda.” Source: RevenueBase Database · checked Sep 29, 2026
12	Domotica Sgta	Indirect evidence	Lisbon, PortugalHQ checked Sep 29, 2026	11-50	33 contacts →
	Indirect evidence “A Domótica SGTA é especialista em Sistemas de Automatização e Controlo de Edifícios – SACE – desenvolvendo soluções inteligentes que otimizam o funcionamento dos distintos…” Source: RevenueBase Database · checked Sep 29, 2026
13	Plexus	Indirect evidence	Vila Nova De Santo André, PortugalHQ checked Sep 29, 2026	11-50	31 contacts →
	Indirect evidence “A PLEXUS é uma empresa que se especializou no campo da integração de sistemas, que consiste na ligação de vários sistemas autónomos uns aos outros, de forma a que aparentem e se…” Source: RevenueBase Database · checked Sep 29, 2026
14	Enforce	Indirect evidence	Covilhã, PortugalHQ checked Sep 29, 2026	11-50	30 contacts →
	Indirect evidence “A Enforce foi fundada há 10 anos resultando da transformação da empresa João Nuno Serra Lda.” Source: RevenueBase Database · checked Sep 29, 2026
15	Energytop	Indirect evidence	Maia, PortugalHQ checked Sep 29, 2026	11-50	27 contacts →
	Indirect evidence “Fundada em 2002, a EnergyTop é uma empresa vocacionada para soluções integradas ou completas, tipo chave-na-mão, nas áreas de produção de energia, instalações elétricas…” Source: RevenueBase Database · checked Sep 29, 2026
16	Electroinstal	Indirect evidence	Maia, PortugalHQ checked Sep 29, 2026	51-200	27 contacts →
	Indirect evidence “Instalações Elétricas \| Instalações Mecânicas (AVAC)\| Sistemas de Segurança \| Gestão Técnica (GTC)” Source: RevenueBase Database · checked Sep 29, 2026
17	Caiado	Indirect evidence	Leiria, PortugalHQ checked Sep 29, 2026	51-200	24 contacts →
	Indirect evidence “Em 1974 nasceu a Caiado - Distribuidora de Material Eléctrico.” Source: RevenueBase Database · checked Sep 29, 2026
18	Enermundo	Indirect evidence	Paços Ferreira, PortugalHQ checked Sep 29, 2026	11-50	21 contacts →
	Indirect evidence “Instalações elétricas de baixa e média tensão, Ited, CCTV, controle de acessos, Intrusão, deteção de incêndio, etc.” Source: RevenueBase Database · checked Sep 29, 2026
19	IELAC	Indirect evidence	Vila Nova De Famalicão, PortugalHQ checked Sep 29, 2026	11-50	20 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 29, 2026
20	Exsepi	Partial evidence	Aveiro, PortugalHQ checked Sep 29, 2026	11-50	19 contacts →
	Partial evidence “Exsepi - Industrial Engineering Services is a pioneer company in the field of Industrial Automation and Control Systems since 1991.” Source: RevenueBase Database · checked Sep 29, 2026
21	ELPOR	Indirect evidence	Loures, PortugalHQ checked Sep 29, 2026	51-200	19 contacts →
	Indirect evidence “Há mais de 4 décadas no mercado, a ELPOR é hoje uma referência Nacional no Setor do Material Elétrico.” Source: RevenueBase Database · checked Sep 29, 2026
22	Cwpower	Indirect evidence	Lisbon, PortugalHQ checked Sep 29, 2026	11-50	18 contacts →
	Indirect evidence “Instalações Elétricas e Telecomunicações & Domótica - Redes Estruturadas de Dados - Safety - SADI - Security - SADIR, Controlo de Acessos, CCTV - Manutenção” Source: RevenueBase Database · checked Sep 29, 2026
23	Builtin Instalações Especiais	Indirect evidence	V.n.famalicão, PortugalHQ checked Sep 29, 2026	11-50	17 contacts →
	Indirect evidence “Builtin, empresa engenharia, Instalação Eletricidade, Ar Condicionado, painéis solares e especialidades” Source: RevenueBase Database · checked Sep 29, 2026
24	Carfat	Indirect evidence	Guimarães, PortugalHQ checked Sep 29, 2026	11-50	17 contacts →
	Indirect evidence “Com mais de duas décadas de história, a CARFAT é uma empresa vocacionada para soluções integradas de eletricidade.” Source: RevenueBase Database · checked Sep 29, 2026
25	Linha D'água	Indirect evidence	Massamá, PortugalHQ checked Sep 29, 2026	11-50	16 contacts →
	Indirect evidence “Fundada no ano a Linha D’Água é uma empresa de Engenharia especializada em soluções de Automação, SCADA, Telegestão, Instrumentação Industrial, Monitorização Remota, Tratamento de…” Source: RevenueBase Database · checked Sep 29, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: electrical systems integration contractors. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names electrical systems integration contractors.
Partial evidence: Its own public description names part of electrical systems integration contractors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name electrical systems integration contractors. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 315 electrical systems integration contractors based in Portugal

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Electrical systems integration contractors based in Portugal at a glance

As of Sep 29, 2026

25.8%Verified-email coverage

4.1%Mobile-number coverage

10.4Average contacts per company

11-50Median size (employees)

5.7%Largest-city concentration · Braga

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

153

11-50

125

51-200

201-500

501-1,000

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 31.0d

3710–30

44631–60

2861–90

090–180

1180+

Company record updated

Median 94.0d

00–30

67831–60

75061–90

1,74190–180

112180+

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among electrical systems integration contractors, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Portugal whose own description of what they do matches “electrical systems integration contractors”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names electrical systems integration contractors), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among electrical systems integration contractors, and records with no verified work email. Companies headquartered outside Portugal are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 846 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 29, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names electrical systems integration contractors, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many electrical systems integration contractors are there based in Portugal?

RevenueBase identified 315 electrical systems integration contractors headquartered in Portugal as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Est, S.A, headquartered in Leiria, tops this list with the largest team on record.

Which city has the most electrical systems integration contractors?

Braga leads with 18 headquartered companies, followed by Lisbon (16) and Porto (9).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 846 verified decision-maker contacts tracked across these 315 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 29, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.