Company lists · Data refreshed November 2026

Top 25 Nuclear power plant consultants worldwide

RevenueBase identified 1,244 company matches for nuclear power plant consultants worldwide as of November 2026 and tracks 150,074 professional contacts across them, including 45,260 with verified work emails. The United States is the largest market and Paris the largest hub.

This list covers company matches for nuclear power plant consultants worldwide, 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 November 6, 2026. Country and city lists for nuclear power plant consultants follow the table.

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 Nov 6, 2026 How this list was built
1,244Companies
150,074Contacts tracked
45,260Verified emails
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The 25 largest nuclear power plant consultants worldwide

Ranked by team size
Top 25 of 1,244 company matches for nuclear power plant consultants worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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 matchMontreal, QC, CanadaHQ recorded Nov 6, 202610001+25,123 contacts →

Exact match

“We are a world-class engineering services and nuclear organization.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchCourbevoie, FranceHQ recorded Nov 6, 202610001+13,401 contacts →

Exact match

“Framatome is an international leader in nuclear energy recognized for its innovative, digital and value added solutions for the global nuclear fleet.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchCranberry Township, PA, United StatesHQ recorded Nov 6, 20265,001-10,00011,794 contacts →

Exact match

“Westinghouse Electric Company is the world's leading supplier of safe and innovative nuclear technology.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchChâtillon, DC, FranceHQ recorded Nov 6, 202610001+11,724 contacts →

Exact match

“Opérateur international reconnu dans le domaine des matières nucléaires, Orano apporte des solutions aux défis actuels et futurs, dans l’énergie et la santé.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchMontreal, ON, CanadaHQ recorded Nov 6, 202610001+10,892 contacts →

Exact match

“SNC Lavalin is now AtkinsRéalis.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchEpsom, FL, United KingdomHQ recorded Nov 6, 202610001+9,322 contacts →

Exact match

“Atkins is now AtkinsRéalis.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchCourbevoie, FranceHQ recorded Nov 6, 20265,001-10,0006,903 contacts →

Exact match

“Assystem, one of the world's leading independent nuclear engineering companies, is committed to accelerating the energy transition.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchAix-en-provence, FranceHQ recorded Nov 6, 202610001+3,602 contacts →

Exact match

“En conjuguant depuis sa création audace et rigueur, le groupe Ortec est devenu aujourd’hui un des leaders des services à l’industrie, l’énergie et l’environnement.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchIssaquah, DE, United StatesHQ recorded Nov 6, 20261,001-5,0002,037 contacts →

Exact match

“NAES is the power generation industry’s largest independent services provider, with more than 40 years of experience managing risk and turning it into profits.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchMarseille, FranceHQ recorded Nov 6, 20261,001-5,0001,782 contacts →

Exact match

“Onet Technologies has 40 years of experience in the nuclear industry, with a strong expertise in engineering and services for reactor maintenance; dismantling, decommissioning and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchRueil Malmaison, FranceHQ recorded Nov 6, 20261,001-5,0001,699 contacts →

Exact match

“Subsidiary of the world-leading VINCI group, NUVIA is an international company that has been operating on highly regulated and sensitive industrial sites for over 60 years.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchMenlo Park, FL, United StatesHQ recorded Nov 6, 20261,001-5,0001,679 contacts →

Exact match

“In an era of accelerating change, Exponent is the only premium engineering and scientific consulting firm with the depth and breadth of expertise to solve our clients’ most…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchSalt Lake City, UT, United StatesHQ recorded Nov 6, 20261,001-5,0001,285 contacts →

Exact match

“EnergySolutions is an international nuclear services company headquartered in Salt Lake City, Utah, and Charlotte, North Carolina, with operations across the United States and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchCergy-pontoise Cedex, FranceHQ recorded Nov 6, 20261,001-5,0001,137 contacts →

Exact match

“À propos de SPIE Nucléaire Filiale de SPIE France, SPIE Nucléaire est le partenaire de référence multi-technique dans la conception, la réalisation, les travaux de modification…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchAnaheim, CA, United StatesHQ recorded Nov 6, 20261,001-5,000897 contacts →

Exact match

“Willdan (NASDAQ: WLDN) provides professional consulting and technical services to utilities, public agencies and private industry throughout the United States.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact match92300 Levallois Perret, FranceHQ recorded Nov 6, 20261,001-5,000647 contacts →

Exact match

“Depuis sa création en 2013, AptiSkills s’est imposée comme un acteur de référence avec plus de 10 agences réparties sur toute la France.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchPort Elgin, CanadaHQ recorded Nov 6, 20261,001-5,000603 contacts →

Exact match

“KEPCO E&C was founded in 1975 with the objective of obtaining core technology.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchCourbevoie, FranceHQ recorded Nov 6, 2026501-1,000544 contacts →

Exact match

“Sur les centrales nucléaires du groupe EDF, nous intervenons sur tous les types de bâtiments, à la fois de production et tertiaires.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchSan Sebastian De Los Reyes, SpainHQ recorded Nov 6, 2026501-1,000484 contacts →

Exact match

“TECNATOM was set up in 1957 as a Spanish engineering company specialising in guaranteeing the operation and maintenance of nuclear power plants to the highest levels of safety.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchColumbia, MD, United StatesHQ recorded Nov 6, 2026201-500451 contacts →

Exact match

“GSE Solutions supports nuclear power and clean-energy fleets worldwide through integrated engineering services and software that strengthen operational performance.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchBaton Rouge, LA, United StatesHQ recorded Nov 6, 20265,001-10,000448 contacts →

Exact match

“Allied Power is dedicated to delivering best-in-class maintenance, modifications, and project services.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchHusinec-řež, Czech RepublicHQ recorded Nov 6, 2026501-1,000417 contacts →

Exact match

“The joint stock company ÚJV Řež is building on the six decades of experience of its predecessor – the Nuclear Research Institute (NRI).”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchSaint-herblain, FranceHQ recorded Nov 6, 2026201-500392 contacts →

Exact match

“Atlantic Ingénierie, l’énergie d’avancer ensemble Chez Atlantic Ingénierie, nous avons une conviction : les projets d’énergie et d’industrie avancent mieux quand on allie…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchAlexandria, CT, United StatesHQ recorded Nov 6, 2026201-500379 contacts →

Exact match

“In 1964, a trio of visionary engineers, from Admiral Rickover's Naval nuclear propulsion program, set out to form a company built around technical excellence.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchMersin, TürkiyeHQ recorded Nov 6, 20265,001-10,000342 contacts →

Exact match

“Kendimize ve yeteneklerimize inanarak ve aklımızın sınırlarını zorlayarak her türlü başarıya ulaşabiliriz” Albert Einstein Bir ilki başarmak, öncü olmak işte bu tarifi mümkün…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 1,244 nuclear power plant consultants worldwide

See the full list, filter by size, metro and specialty, and access 45,260 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Nuclear power plant consultants worldwide at a glance

As of Nov 6, 2026
30.2%Verified-email coverage
120.6Average contacts per company
11-50Median size (employees)
1.0%Largest-city concentration · Paris
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
594
11-50
331
51-200
170
201-500
55
501-1,000
21
1,001-5,000
36
5,001-10,000
13
10001+
14

Email recency is reported on each country list linked below.

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.
Coverage
Every country. Country and city lists for nuclear power plant consultants are linked below.
What qualifies
Company records worldwide whose business descriptions match “nuclear power plant consultants” 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. 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 45,260 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 November 6, 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.

Nuclear power plant consultants by location

8 lists · largest first

Every Nuclear power plant consultants list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

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 “nuclear power plant consultants”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many nuclear power plant consultants are there worldwide?

RevenueBase identified 1,244 company matches for nuclear power plant consultants worldwide as of November 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?

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

Which country has the most nuclear power plant consultants?

The United States leads with 318 companies, followed by France (123) and the United Kingdom (85). Every nuclear power plant consultants list by country and city is linked on this page.

Which city has the most nuclear power plant consultants?

Paris leads with 13 company records, followed by Toronto (11) and London (9).

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 45,260 professional contacts with verified work emails tracked across these 1,244 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 November 6, 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.