Company lists · Data refreshed September 2026
Top 25 Nuclear engineering consulting firms based in Spain
RevenueBase identified 127 nuclear engineering consulting firms headquartered in Spain as of September 2026 and tracks 3,150 professional contacts across them, including 265 with verified work emails and 19 with mobile numbers. Madrid is the largest hub.
This list covers nuclear engineering consulting firms headquartered in Spain, 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.
The 25 largest nuclear engineering consulting firms based in Spain
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | TecnatomStrong evidence | 487 | |||
“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.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 2 | 345 | ||||
“Se ocupa de la primera parte del ciclo de combustible nuclear (diseño, fabricación y abastecimiento de combustible) prestando servicios de ingeniería y combustible a las Centrales…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 3 | 254 | ||||
“Fabricación de componentes para la industria nuclear.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 4 | 234 | ||||
“ECOINTEGRAL INGENIERÍA is an independent company of advanced engineering and consulting firm that operates in 3 areas of expertise: Energy, Telecommunications and Environment.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 5 | SCI Control & InspectionPartial evidence | 231 | |||
“we have provided high-end engineering services to ensure safety, quality, and regulatory compliance across critical infrastructures and strategic industrial sectors.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 6 | Voltae EngineeringIndirect evidence | 132 | |||
“Somos una compañía de ingeniería y consultoría altamente especializada, ofreciendo servicios integrales de alto valor en proyectos de transmisión, distribución y generación de…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 7 | 98 | ||||
“AZCATEC It is the tool for a group of well-organized professional engineers and experts in the development of industrial plants, energy and environmental engineering have to…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 8 | 88 | ||||
“Engineering company based in Madrid, Spain with over 40 years of experience in the fields of petrochemical and industrial engineering, conventional and nuclear power plants…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 9 | 75 | ||||
“The work of CT3 Ingeniería is aimed at ensuring utmost customer satisfaction through project engagement and commitment, while favouring the professional and personal development…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 10 | 58 | ||||
“Azigrene es una empresa de servicios de Consultoría e Ingeniería Energética, que desarrolla su actividad en- Reducción del coste: Definición de la mejor estrategia de compra…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 11 | 56 | ||||
“Grupo CARTAGO desarrolla servicios de ingeniería y de dirección y supervisión de obra en la construcción y puesta en marcha de plantas industriales, petroquímicas, centrales…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 12 | Marsein UNA Empresa DE NuviaPartial evidence | 50 | |||
“Marsein es una empresa de origen familiar que, desde hace más de 30 años, centra su actividad en la prestación de servicios de soporte en centrales nucleares, incluyendo…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 13 | 30 | ||||
“GE & PE was created in 1983 with the purpose of covering the needs and increasingly complex management and efficiency tasks related to the supply and consumption of energy by…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 14 | EDE IngenierosIndirect evidence | 28 | |||
“Empresa de servicios de Ingeniería y Consultoría Energética e Industrial, que desarrolla su actividad en las áreas de:* Generación y Uso Racional de la Energía en la Industria y…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 15 | Soltec Ingenieros S.LStrong evidence | 23 | |||
“Soltec Ingenieros SL, founded in 2001, is an independent engineering and consulting firm based in Vigo, Spain.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 16 | 19 | ||||
“AyD has extensive experience in the development of large projects, fundamentally Conventional Thermal Power Plants and Combined Cycle Power Plants, in their bidding and planning…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 17 | 19 | ||||
“PrEMEA es una firma de consultoría técnica en seguridad y medioambiente especializada en el asesoramiento y la gestión técnica, de cualquier proyecto.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 18 | 17 | ||||
“INSDO nace en el año 2009 con el objetivo de ser un referente de la coordinación e intermediación en la prestación de servicios de ingeniería.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 19 | Ordeic Projectes I ConsultoriaIndirect evidence | 14 | |||
“Ordeic Ingeniería y Consultoria es una empresa dedicada a los servicios de consultoria de ingeniería en instalaciones, ambientales, energéticos y de seguridad y autoprotección.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 20 | SIK IngenieríaIndirect evidence | 13 | |||
“Somos una empresa consultora del ámbito de la ingeniería y el desarrollo de proyectos integrales, especializada en el diseño y cálculo de instalaciones en edificaciones singulares.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 21 | 6 | ||||
“Management consulting firm bringing business analysis to the nuclear industry.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 22 | 5 | ||||
“AM Ingenieros es un estudio profesional de Ingeniería dedicado a asesorar, auditar, diseñar y asistir en la generación o modificación de instalaciones técnicas en el ámbito civil…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 23 | 4 | ||||
“Ingeniería consultora especializada en servicios energéticos y medio ambientales, fundada a finales del año 2007 a partir de las necesidades detectadas en el sector energético y…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 24 | 3 | ||||
“ARAL CONSULTORÍA S.L, es una Consultora Extremeña cuya actividad se centra en la actualidad, en dos secciones de la ingeniería que se desarrollan de forma independiente y autónoma.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 25 | 2 | ||||
“Català: Projectes d'enginyeria adaptats a les teves necessitats Som una enginyeria que naixem de la inquietud d'optimitzar les instal·lacions.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
Showing 25 of 127 nuclear engineering consulting firms based in Spain
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Nuclear engineering consulting firms based in Spain at a glance
As of Sep 5, 2026Companies by employee count
Verified emails by last verification
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 Spain 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 Spain 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, 265 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.
Frequently asked
How many nuclear engineering consulting firms are there based in Spain?
RevenueBase identified 127 nuclear engineering consulting firms headquartered in Spain 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?
Tecnatom, headquartered in San Sebastian De Los Reyes, tops this list with the largest team on record.
Which city has the most nuclear engineering consulting firms?
Madrid leads with 21 headquartered companies, followed by Sevilla (7) and Barcelona (6).
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 265 verified decision-maker contacts tracked across these 127 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.
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