Company lists · Data refreshed September 2026
Top 25 Energy companies based in Portugal
RevenueBase lists 79 energy companies based in Portugal, with 16,635 business contacts and 5,453 email addresses. The directory covers organizations involved in producing, generating, transmitting, distributing, trading, or supplying energy. As of September 2026, Lisbon is the single most-represented city among the companies on the list.
Energy companies produce, generate, transmit, distribute, trade, or supply energy and related energy products and services. This list covers companies that produce, generate, transmit, distribute, trade, or supply energy, including electricity, fuels, and renewable energy products. Ranked by team size, largest first. Data current as of September 6, 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.
The 25 largest energy companies based in Portugal
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 6,435 contacts → | ||||
Indirect evidence “Our story began 50 years ago.” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 2 | 4,960 contacts → | ||||
Strong evidence “Galp is an energy company committed to the development of efficient solutions in its operations and in the integrated services it offers to customers.” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 3 | 1,131 contacts → | ||||
Strong evidence “REN - Redes Energéticas Nacionais operates in two major areas: • The transmission in very high voltage electricity and overall technical management of the National Electricity…” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 4 | 902 contacts → | ||||
Strong evidence “Desde 1976 que o nosso propósito é distribuir energia ao país e fazer da nossa energia uma energia única.” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 5 | 518 contacts → | ||||
Strong evidence “Atenta à tendência crescente da mobilidade sustentável, e vendo na energia de baixa emissão de CO2 uma alternativa viável, a Prio Energy integra os principais elos da cadeia de…” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 6 | 437 contacts → | ||||
Strong evidence “At Petrotec Group, we are more than a provider of mobility solutions, we are enablers of progress across multiple energy sources.” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 7 | 242 contacts → | ||||
Indirect evidence “A GOLDENERGY nasceu com uma visão.” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 8 | 185 contacts → | ||||
Strong evidence “Há cerca de 50 anos que o Grupo Alves Bandeira se afirma como um dos principais operadores nos setores da energia, mobilidade e aftermarket em Portugal, e um dos 50 maiores grupos…” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 9 | 130 contacts → | ||||
Indirect evidence “Ever since 1956 E.I.P.” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 10 | 110 contacts → | ||||
Strong evidence “A Empresa de Electricidade da Madeira (EEM) tem como missão fundamental a produção, transporte, distribuição e comercialização de energia na Região Autónoma da Madeira.” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 11 | 52 contacts → | ||||
Strong evidence “A OZ Energia é uma empresa portuguesa na área da energia pertencente ao Grupo Manuel Champalimaud, sendo um dos quatro principais operadores de gás embalado no mercado nacional.” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 12 | 49 contacts → | ||||
Strong evidence “ℹ Desde 2013, a Master Vantagem tem sido um nome de referência no mercado energético, tanto em Portugal como em Espanha.” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 13 | 44 contacts → | ||||
Indirect evidence “Com mais de 40 anos de presença no mercado, o Grupo TRÊS60 gera um volume de negócios anual de mais de 215 Milhões de Euros, atuando nos setores de Eletricidade, Telecomunicações…” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 14 | 40 contacts → | ||||
Strong evidence “A Alferpac, é uma empresa portuguesa que atua na área dos serviços energéticos de excelência e conta com um vasto portefólio de obras.” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 15 | 35 contacts → | ||||
Strong evidence “We are a Portuguese company, with more than 50 years of existence in the national market, dedicated to the commercialization of energy and also of materials and equipment for…” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 16 | 31 contacts → | ||||
Strong evidence “A ENSE – Entidade Nacional para o Sector Energético, E.P.E.” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 17 | 25 contacts → | ||||
Strong evidence “OMIP runs the Iberian energy derivatives exchange since July 2006, providing exchange trading, central clearing and settlement (through OMIClear) and data distribution services…” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 18 | 23 contacts → | ||||
Indirect evidence “Somos uma empresa focalizada na distribuição e revenda de combustíveis e produtos de conveniência.” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 19 | 22 contacts → | ||||
Strong evidence “QUEM SOMOS a YES ENERGY é uma marca detida pela ENFORCESCO SA, um player da nova geração do mercado de comercialização de energia, inserido num sólido grupo empresarial com mais…” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 20 | 22 contacts → | ||||
Strong evidence “A Bongás Energias é uma empresa líder no setor da energia.” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 21 | 21 contacts → | ||||
Indirect evidence “A Gepoil, Sociedade Gestora de Postos de Abastecimento de Combustíveis, S.A, foi fundada em Fevereiro de 1998, tendo como atividade principal a revenda e distribuição de…” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 22 | 16 contacts → | ||||
Strong evidence “Audax é a empresa de energia que ajuda pessoas e empresas a tirar o máximo proveito da sua energia.” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 23 | 16 contacts → | ||||
Indirect evidence “A TSG Portugal, como parte do Grupo TSG, surge da união estratégica de três empresas de destaque na indústria da mobilidade responsável em Portugal: Gasodata, GNC e Leirivolt.” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 24 | 14 contacts → | ||||
Strong evidence “Comercializadora de eletricidade e gás que oferece serviços de energia 360º.” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 25 | 14 contacts → | ||||
Indirect evidence “A Citrobox é uma empresa sedia da em Chaves constituída por dois jovens irmãos em 2008.” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
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: energy companies. 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 energy companies.
- Partial evidence
- Its own public description names part of energy companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name energy companies. 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 79 energy companies based in Portugal
See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 5,453 reachable decision-makers.
Free signup · no credit card
Energy companies based in Portugal at a glance
As of Sep 6, 2026Companies by employee count
Freshness & accuracy
How recently the business emails on this list were verified
Email last verified
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 energy companies, 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 “energy companies”. 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 energy companies), 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 energy companies, 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, 5,453 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 6, 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 are energy companies?
Energy companies produce, generate, transmit, distribute, trade, or supply energy and related products and services.
How many energy companies are based in Portugal?
The directory lists 79 energy companies based in Portugal, with 16,635 business contacts and 5,453 email addresses.
Which city has the most energy companies in this list?
Lisbon is the single most-represented city among the companies on the list.
Ready to reach these companies? Verified emails and direct dials for all 79 energy companies based in Portugal. Start with a free account, no credit card.
Download this list →Related lists
Energy companies by geography
- Energy companies based in the United States
- Energy companies based in Italy
- Energy companies based in Germany
- Energy companies based in the United Kingdom
- Energy companies based in Spain
- Energy companies based in Brazil
- Energy companies based in France
- Energy companies based in Canada
- Energy companies based in the Netherlands
- Energy companies based in Poland
- Energy companies based in Switzerland
- Energy companies based in Australia
Browse the directory
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.