Company lists · Data refreshed September 2026

Top 9 Climate tech startups based in Portugal

RevenueBase identified 30 company matches for climate tech startups associated with Portugal as of September 2026 and tracks 193 professional contacts across them, including 73 with verified work emails. Lisbon is the largest hub.

This list covers company matches for climate tech startups associated with Portugal, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 19, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Sep 19, 2026 How this list was built
30Companies
193Contacts tracked
73Verified emails
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The 9 largest climate tech startups based in Portugal

Ranked by team size
Top 9 of 30 company matches for climate tech startups based in Portugal, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 19, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchPorto, PortugalHQ recorded Sep 19, 202611-5028 contacts →

Exact match

“A Smartwatt, com mais de 15 anos de experiência, cria e implementa soluções de eficiência energética, produção de energia renovável e digitalização da gestão da energia…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
2Exact matchMaia, PortugalHQ recorded Sep 19, 202611-5019 contacts →

Exact match

“Founded in 2018 and based in Porto, TNE is a cleantech company accelerating the energy transition through innovation in green fuels and renewable energy.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
3Exact matchRio De Mouro, PortugalHQ recorded Sep 19, 202611-5018 contacts →

Exact match

“Somos uma comercializadora de Energia, com forte vertente para o desenvolvimento de soluções para os nossos clientes para redução das suas emissões de carbono, por sua vez a…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
4Exact matchAlgés, PortugalHQ recorded Sep 19, 202611-5016 contacts →

Exact match

“Pioneering Sustainable Energy Solutions.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
5Exact matchMatosinhos, PortugalHQ recorded Sep 19, 20261-105 contacts →

Exact match

“Pretendemos que seja simples a introdução de energias renováveis na sua empresa, sem a desfocar do seu negócio principal.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
6Exact matchCascais, PortugalHQ recorded Sep 19, 20261-103 contacts →

Exact match

“Projetamos, desenvolvemos e financiamos a melhor solução de eficiência energética para o seu negócio.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
7Exact matchPorto, PortugalHQ recorded Sep 19, 202611-503 contacts →

Exact match

“Renewing is the cleantech of the Mota-Engil Group and its mission is to accelerate the energy transition and decarbonization of urban centers, companies and industry.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
8Exact matchAzurém, PortugalHQ recorded Sep 19, 20261-103 contacts →

Exact match

“Optimização Energética Industrial.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
9Exact matchLisbon, PortugalHQ recorded Sep 19, 202611-502 contacts →

Exact match

“Our mission is to create a sustainable global carbon sequestration market based on a Removal Unit Program (RMU) – that also helps local communities by creating self-sustaining…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase

Showing 9 of 30 climate tech startups based in Portugal

See the full list, filter by size, metro and specialty, and access 73 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Climate tech startups based in Portugal at a glance

As of Sep 19, 2026
37.8%Verified-email coverage
6.4Average contacts per company
1-10Median size (employees)
26.7%Largest-city concentration · Lisbon
Sep 19, 2026Page data refreshed

Companies by employee count

1-10
17
11-50
12
51-200
1

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 30 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with Portugal whose business descriptions match “climate tech startups” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 73 professional contacts with verified work emails across the full matched dataset. 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 19, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “climate tech startups”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many climate tech startups are there based in Portugal?

RevenueBase identified 30 company matches for climate tech startups associated with Portugal as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Smartwatt tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most climate tech startups?

Lisbon leads with 8 company records, followed by Porto (2) and Alges (1).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 73 professional contacts with verified work emails tracked across these 30 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 19, 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 SmartSearch, 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.