Company lists · Data refreshed September 2026
Top 25 Cleantech consulting firms based in Portugal
RevenueBase identified 93 cleantech consulting firms headquartered in Portugal as of September 2026 and tracks 446 professional contacts across them, including 155 with verified work emails. Lisboa is the largest hub.
This list covers cleantech consulting firms 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 21, 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 cleantech consulting firms based in Portugal
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 45 contacts → | ||||
Indirect evidence “A ECOFIRMA é uma empresa vocacionada para a conceção, gestão e execução de projetos ambientais e técnicos.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 2 | 42 contacts → | ||||
Indirect evidence “Com um histórico de mais de 15 anos no setor da energia, a Elergone Energia oferece aos seus clientes uma visão global e estratégica na sustentabilidade energética, económica e…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 3 | 26 contacts → | ||||
Indirect evidence “Serviços nas áreas de referência de sustentabilidade energética desde Consultoria ao desenvolvimento de um Plano Operacional Integrado.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 4 | 25 contacts → | ||||
Indirect evidence “SOBRE NÓS Fundada em 2005, a ECOSATIVA, empresa de projeto e consultoria ambiental, destaca-se pela excelência do serviço prestado e capacidade de resposta às necessidades dos…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 5 | 23 contacts → | ||||
Partial evidence “Gesto is an international company focused on energy consulting and renewable energy project development.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 6 | 22 contacts → | ||||
Indirect evidence “3drivers is a company of the Quadrante Group specialising in environmental services, technology, and R&D consultancy, with a strong focus on circular economy and waste management.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 7 | 21 contacts → | ||||
Indirect evidence “We Are Aliados.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 8 | 7 contacts → | ||||
Indirect evidence “BoG, acronym of Back on Green, represents the union between technical knowledge, experience and the desire to do more and better.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 9 | 7 contacts → | ||||
Indirect evidence “From Energy Efficiency & Descarbonization, strategic decisions for Facilities Management to developing the capabilities of your business, we are available to help with experienced…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 10 | 7 contacts → | ||||
Indirect evidence “O setor da Sustentabilidade, Gestão de Ativos e Tecnologias de Informação ganha cada vez mais importância dentro de uma organização, devido à representatividade dos seus recursos…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 11 | 7 contacts → | ||||
Partial evidence “Founded in 2009, NOCTULA - Environmental Consultants is a fast growing company, dedicated to provide services in the environmental sector, from consulting to environmental…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 12 | 7 contacts → | ||||
Partial evidence “A BioCity Consulting dedica-se desde 2011 a ajudar os clientes a reduzir consumos.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 13 | 5 contacts → | ||||
Indirect evidence “Trabalhamos com serviços de consultoria e desenvolvimento de tecnologia.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 14 | 5 contacts → | ||||
Indirect evidence “Desde 2012, a Ecosul tem liderado o caminho na eficiência energética e energias renováveis, ajudando empresas, indústrias e instituições públicas a reduzir custos energéticos…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 15 | 5 contacts → | ||||
Indirect evidence “Pretendemos que seja simples a introdução de energias renováveis na sua empresa, sem a desfocar do seu negócio principal.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 16 | 5 contacts → | ||||
Indirect evidence “A CONFIENERGY é uma empresa de Consultadoria de Energia e Ambiente.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 17 | 4 contacts → | ||||
Partial evidence “CleanTech GrowthLab is the full-stack performance marketing partner for fast-growing B2B cleantech companies.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 18 | 4 contacts → | ||||
Indirect evidence “A Energia Fundamental é uma empresa de consultoria flexível e dinâmica que oferece um conjunto diversificado de serviços nos domínios da Energia, do Ambiente e da Formação…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 19 | 4 contacts → | ||||
Indirect evidence “We help organizations along their sustainability journey.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 20 | 4 contacts → | ||||
Indirect evidence “Somos uma empresa de consultoria ambiental com uma missão clara: liderar o futuro da consciência sustentável.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 21 | 4 contacts → | ||||
Indirect evidence “A Advanced Way é uma empresa de consultoria, planeamento, estudos, projectos de energia e engenharia, orientada essencialmente para o apoio e resolução de problemas de desempenho…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 22 | 4 contacts → | ||||
Indirect evidence “Fundada em 1992, a OMF é uma empresa orientada para uma prestação de serviços transversal a diferentes domínios da engenharia, desde a elaboração de projetos, a auditorias…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 23 | 4 contacts → | ||||
Partial evidence “X&Y Partners is a specialized management consulting firm.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 24 | 3 contacts → | ||||
Partial evidence “2GO OUT Consulting is a consulting company that provides specialized services to integrate sustainability and innovation into its clients' corporate strategy.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 25 | 2 contacts → | ||||
Partial evidence “Agaia Group is a sustainability and energy efficiency consulting company focused on minimising our impact on our planet by implementing innovative, circular and long-term…” Source: RevenueBase Database · checked Sep 21, 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: cleantech consulting firms. 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 cleantech consulting firms.
- Partial evidence
- Its own public description names part of cleantech consulting firms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name cleantech consulting firms. 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 93 cleantech consulting firms based in Portugal
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Cleantech consulting firms based in Portugal at a glance
As of Sep 21, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for Portugal, so it is reported there. Company counts and contact totals on this page are exact for Portugal, over 93 companies.
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 cleantech consulting firms, 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 “cleantech consulting firms”. 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 cleantech consulting firms), 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 cleantech consulting firms, 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, 155 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 21, 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 cleantech consulting firms, 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 cleantech consulting firms are there based in Portugal?
RevenueBase identified 93 cleantech consulting firms 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?
Ecofirma, headquartered in Portugal, tops this list with the largest team on record.
Which city has the most cleantech consulting firms?
Lisboa leads with 10 headquartered companies, followed by Lisbon (9) and Porto (8).
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 155 verified decision-maker contacts tracked across these 93 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 21, 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.
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