Company lists · Data refreshed September 2026

Top 25 Nuclear engineering consulting firms based in Brazil

Name: Nuclear engineering consulting firms based in Brazil
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 5, 2026 245 companies tracked

RevenueBase identified 245 nuclear engineering consulting firms headquartered in Brazil as of September 2026 and tracks 2,506 professional contacts across them, including 452 with verified work emails and 51 with mobile numbers. Sao Paulo is the largest hub.

This list covers nuclear engineering consulting firms headquartered in Brazil, 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, how directly it supports the match, and when it was last checked. Data refreshed September 5, 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 HQ checked on every row Match evidence on every row Refreshed Sep 5, 2026 86% judged on-target in blind review

245Companies

2,506Contacts tracked

452Verified emails

51Mobile numbers

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The 25 largest nuclear engineering consulting firms based in Brazil

Ranked by team size

Top 25 of 245 nuclear engineering consulting firms based in Brazil, ranked by team size, largest first. Data refreshed Sep 5, 2026. Evidence rates how directly each company's own description names nuclear engineering consulting firms: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	CEL Engenharia CelenergiaIndirect evidence	Goiânia, BrazilHQ checked Sep 5, 2026	1,001-5,000	263
	“Fundada em 1992, a CEL ENGENHARIA é regida pelos princípios da ética, responsabilidade e profissionalismo; oferece serviços implementados com rigor técnico e operacional aliados…” Source: company website · checked Sep 5, 2026
2	Enerwatt EngenhariaIndirect evidence	Goiânia, BrazilHQ checked Sep 5, 2026	501-1,000	192
	“Fundada em 2006, em Goiânia-GO, a Enerwatt Engenharia iniciou suas atividades atuando na área de projetos e consultoria energética.” Source: company website · checked Sep 5, 2026
3	Marte Engenharia LtdaIndirect evidence	Rio De Janeiro, BrazilHQ checked Sep 5, 2026	1,001-5,000	153
	“A Marte Engenharia Ltda é uma empresa de engenharia que oferece serviços de consultoria e projetos de engenharia nas áreas de geração, transmissão e distribuição de energia…” Source: company website · checked Sep 5, 2026
4	G5 EngenhariaIndirect evidence	Curitiba, BrazilHQ checked Sep 5, 2026	51-200	135
	“A G5 Engenharia é uma empresa de consultoria, projeto e de gerenciamento de implantação de obras de infra-estrutura, atuando principalmente no ramo de energia, mineração…” Source: company website · checked Sep 5, 2026
5	LMENGIndirect evidence	Rio De Janeiro, BrazilHQ checked Sep 5, 2026	51-200	92
	“Somos um escritório de consultoria técnica, constituído há mais de vinte anos, especializado na área de engenharia, com foco em energia elétrica, atuando nos segmentos de…” Source: company website · checked Sep 5, 2026
6	Novo Serviços DE EngenhariaPartial evidence	Recife, BrazilHQ checked Sep 5, 2026	51-200	89
	“Somos uma empresa independente de engenharia consultiva que oferece serviços especializados nas áreas de energia e infraestrutura.” Source: company website · checked Sep 5, 2026
7	Deerns LatamIndirect evidence	Sao Paulo, BrazilHQ checked Sep 5, 2026	501-1,000	88
	“Como uma empresa de engenharia independente, com 750 especialistas em todo o mundo, a Deerns tem as habilidades necessárias para tornar idéias realidade.” Source: company website · checked Sep 5, 2026
8	P3 Engenharia ElétricaIndirect evidence	Indaial, BrazilHQ checked Sep 5, 2026	51-200	76
	“A P3 Engenharia elétrica, está situada em Indaial, Santa Catarina.” Source: company website · checked Sep 5, 2026
9	Smart Electric Engenharia E Sistemas LtdaIndirect evidence	Guarulhos, BrazilHQ checked Sep 5, 2026	51-200	71
	“Somos uma empresa de serviços de engenharia elétrica, com grande experiência em usinas hidrelétricas, termoelétricas, parques eólicos e subestações de transmissão e distribuição…” Source: company website · checked Sep 5, 2026
10	Multitec EngenhariaPartial evidence	Guaratinguetá, BrazilHQ checked Sep 5, 2026	51-200	68
	“Serviços especializados de Engenharia Consultitva para desenvolvimento de Projetos Industriais.” Source: company website · checked Sep 5, 2026
11	Minerbo Fuchs EngenhariaIndirect evidence	Barueri, BrazilHQ checked Sep 5, 2026	201-500	66
	“Complete designs.” Source: company website · checked Sep 5, 2026
12	RME Consultoria E EngenhariaIndirect evidence	São José Dos Campos, BrazilHQ checked Sep 5, 2026	11-50	50
	“Somos especialistas em análises de riscos, projetos de segurança e projetos de processos industriais.” Source: company website · checked Sep 5, 2026
13	Daimon Engenharia E SistemasIndirect evidence	São Paulo, BrazilHQ checked Sep 5, 2026	11-50	49
	“A Daimon é uma empresa de engenharia altamente especializada em serviços de regulação, desenvolvimento de soluções em software, estudos e projetos de pesquisa e desenvolvimento e…” Source: company website · checked Sep 5, 2026
14	On7 EngenhariaIndirect evidence	Blumenau, BrazilHQ checked Sep 5, 2026	51-200	45
	“ON7 Engenharia \| Excelência em projetos de engenharia elétrica Com mais de 20 anos de expertise, a ON7 Engenharia é reconhecida pelo atendimento especializado no setor de…” Source: company website · checked Sep 5, 2026
15	FigenerStrong evidence	São Paulo, BrazilHQ checked Sep 5, 2026	11-50	42
	“FIGENER is an engineering and consulting company, developing highly specialized projects in the fields of Power Generation, Energy Conservation, Combustion, Industrial Processes…” Source: company website · checked Sep 5, 2026
16	Interest EngenhariaIndirect evidence	Recife, BrazilHQ checked Sep 5, 2026	51-200	40
	“A INTEREST Engenharia é uma empresa especializada em consultoria e projetos de engenharia nas áreas de transmissão e geração de energia elétrica de grandes empreendimentos em todo…” Source: company website · checked Sep 5, 2026
17	Solufarma EngenhariaIndirect evidence	São José Dos Campos, BrazilHQ checked Sep 5, 2026	51-200	39
	“A Solufarma Engenharia atua há quase 20 anos no desenvolvimento e na implantação de projetos do segmento industrial.” Source: company website · checked Sep 5, 2026
18	ProenergiaIndirect evidence	Porto Alegre, BrazilHQ checked Sep 5, 2026	11-50	32
	“Fundada em a PROENERGIA possui mais de duas décadas de atuação no mercado nacional de engenharia elétrica, consolidando-se como referência técnica no desenvolvimento de projetos…” Source: company website · checked Sep 5, 2026
19	D.R.A. Engenharia IndustrialIndirect evidence	Belo Horizonte, BrazilHQ checked Sep 5, 2026	1-10	30
	“NEGÓCIO Fornecer serviços de consultoria e desenvolvimento de projetos em engenharia estrutural e mecânica para atender necessidades do setor industrial.” Source: company website · checked Sep 5, 2026
20	Spec EngenhariaIndirect evidence	Belo Horizonte, BrazilHQ checked Sep 5, 2026	501-1,000	30
	“Fundada em março de 1986, a SPEC PLANEJAMENTO, ENGENHARIA, CONSULTORIA LTDA.” Source: company website · checked Sep 5, 2026
21	Jabarra RadioproteçãoIndirect evidence	Niterói, BrazilHQ checked Sep 5, 2026	11-50	28
	“A Jabarra Radioproteção é uma empresa de consultoria especializada em serviços de proteção radiológica com profissionais altamente capacitados na área.” Source: company website · checked Sep 5, 2026
22	Engtec ProjetosIndirect evidence	Volta Redonda, BrazilHQ checked Sep 5, 2026	11-50	23
	“ENGTEC vem ao mercado trazer projetos com alto desempenho e excelente custo-benefício.” Source: company website · checked Sep 5, 2026
23	Copenge Companhia Paulista DE EngenhariaIndirect evidence	Indaiatuba, BrazilHQ checked Sep 5, 2026	11-50	22
	“A Copenge é uma empresa de engenharia especializada em distribuidoras, transmissoras e geradoras de energia elétrica, industrias, usinas e acessantes.” Source: company website · checked Sep 5, 2026
24	Enelt EngenhariaIndirect evidence	Taió, BrazilHQ checked Sep 5, 2026	1-10	13
	“Estamos no mercado para atender as necessidades nos segmentos de engenharia elétrica, segurança do trabalho e gestão de obras.” Source: company website · checked Sep 5, 2026
25	Adonai EngenhariaIndirect evidence	Belo Horizonte, BrazilHQ checked Sep 5, 2026	11-50	13
	“A ADONAI ENGENHARIA é uma empresa consolidada e sedimentada no setor energético (geração, distribuição e transmissão), mineração, habitacional e industrial que há mais de 10 anos…” Source: company website · checked Sep 5, 2026

Showing 25 of 245 nuclear engineering consulting firms based in Brazil

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Nuclear engineering consulting firms based in Brazil at a glance

As of Sep 5, 2026

1-10Median size (employees)

Sao PauloLargest hub · 36 HQs

51Contacts with mobile numbers

Sep 5, 2026Data refreshed

Companies by employee count

1-10

163

11-50

51-200

201-500

501-1,000

1,001-5,000

Verified emails by last verification

0–30

406

31–60

61–90

90–180

180+

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 nuclear engineering consulting firms, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Brazil whose own description of what they do matches “nuclear engineering consulting firms”. Matching reads each company's description, not its industry code or its name.
What we exclude: Companies whose own description does not clearly place them among nuclear engineering consulting firms, and records with no verified work email. Companies headquartered outside Brazil 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 an evidence 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, 452 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 5, 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.

Nuclear engineering consulting firms by metro

Nuclear engineering consulting firms in Sao Paulo36

Frequently asked

How many nuclear engineering consulting firms are there based in Brazil?

RevenueBase identified 245 nuclear engineering consulting firms headquartered in Brazil 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?

CEL Engenharia Celenergia, headquartered in Goiania, tops this list with the largest team on record.

Which city has the most nuclear engineering consulting firms?

Sao Paulo leads with 36 headquartered companies, followed by Rio De Janeiro (16) and Belo Horizonte (12).

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 452 verified decision-maker contacts tracked across these 245 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 5, 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.