Company lists · Data refreshed September 2026

Top 25 Industrial iot energy companies based in Spain

Name: Industrial iot energy companies based in Spain
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 147 companies tracked

RevenueBase identified 147 industrial iot energy companies headquartered in Spain as of September 2026 and tracks 2,440 professional contacts across them, including 216 with verified work emails. Madrid is the largest hub.

This list covers industrial iot energy companies 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 17, 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 17, 2026 86% judged on-target in blind review

147Companies

2,440Contacts tracked

216Verified emails

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The 25 largest industrial iot energy companies based in Spain

Ranked by team size

Top 25 of 147 industrial iot energy companies based in Spain, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to industrial iot energy companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Siemsa	Strong evidence	Madrid, SpainHQ checked Sep 17, 2026	501-1,000	246 contacts →
	Strong evidence “Siemsa es un operador independiente que proporciona servicios para el sector de la Energía, Industria y Oil and Gas, sistemas de control y analizadores de proceso, así como…” Source: RevenueBase Database · checked Sep 17, 2026
2	Libelium	Indirect evidence	Zaragoza, SpainHQ checked Sep 17, 2026	51-200	105 contacts →
	Indirect evidence “Libelium transforms data from companies and cities into decisions that make our planet more sustainable.” Source: RevenueBase Database · checked Sep 17, 2026
3	Montrel	Strong evidence	Sevilla, SpainHQ checked Sep 17, 2026	51-200	97 contacts →
	Strong evidence “With over 60 years of experience, Montrel is a leading company in innovative comprehensive solutions in the energy and industrial sectors.” Source: RevenueBase Database · checked Sep 17, 2026
4	Smilics Technologies	Partial evidence	Terrassa, SpainHQ checked Sep 17, 2026	11-50	63 contacts →
	Partial evidence “En Smilics Technologies creemos en la eficiencia energética, la sostenibilidad, en la tecnología al servicio de la gente y en el medioambiente.” Source: RevenueBase Database · checked Sep 17, 2026
5	Dismuntel	Indirect evidence	Algemesí, SpainHQ checked Sep 17, 2026	51-200	61 contacts →
	Indirect evidence “La misión de DISMUNTEL es facilitar la vida de las personas y las sociedades mediante el diseño, fabricación y suministro de soluciones electrónicas globales especializadas, con…” Source: RevenueBase Database · checked Sep 17, 2026
6	ECOMT	Indirect evidence	A Coruña, SpainHQ checked Sep 17, 2026	51-200	57 contacts →
	Indirect evidence “We provide #SmartEnergy and #SmartBuilding solutions with a clear objective; to help companies to find balance between financial peace of mind, corporate well-being, and…” Source: RevenueBase Database · checked Sep 17, 2026
7	Lmgroup	Partial evidence	Toledo, SpainHQ checked Sep 17, 2026	51-200	56 contacts →
	Partial evidence “LMGROUP, was born as a company dedicated to the service and development of equipment for industrial automation, providing technical and innovative solutions and growth to its…” Source: RevenueBase Database · checked Sep 17, 2026
8	Smarkia	Partial evidence	León, SpainHQ checked Sep 17, 2026	51-200	53 contacts →
	Partial evidence “Smarkia is the world's leading SaaS Energy Management Platform that has (R)evolutionized the Energy Optimization paradigm, worldwide.” Source: RevenueBase Database · checked Sep 17, 2026
9	Spacewell Energy Dexma	Partial evidence	Barcelona, SpainHQ checked Sep 17, 2026	51-200	50 contacts →
	Partial evidence “Spacewell Energy is a cloud-based Energy Intelligence Platform, trusted by over organisations across 35+ countries.” Source: RevenueBase Database · checked Sep 17, 2026
10	Optimitive	Indirect evidence	Vitoria-gasteiz, SpainHQ checked Sep 17, 2026	11-50	44 contacts →
	Indirect evidence “OPTIMITIVE provides high-tech operational optimization solutions through Advanced Analytics and Artificial Intelligence.” Source: RevenueBase Database · checked Sep 17, 2026
11	Instrumentación Industrial Zurc	Strong evidence	Viladecavalls, SpainHQ checked Sep 17, 2026	51-200	44 contacts →
	Strong evidence “En Instrumentación Industrial Zurc, nos dedicamos a diseñar y fabricar equipos de control y medición para la eficiencia energética eléctrica, adaptados a las necesidades de…” Source: RevenueBase Database · checked Sep 17, 2026
12	Linkener	Partial evidence	Valencia/valència, SpainHQ checked Sep 17, 2026	11-50	39 contacts →
	Partial evidence “Linkener es el Software de Gestión y Eficiencia Energética para asesores, consultoras y empresa final más avanzado del mercado.” Source: RevenueBase Database · checked Sep 17, 2026
13	Sawatco	Partial evidence	Santander, SpainHQ checked Sep 17, 2026	11-50	20 contacts →
	Partial evidence “SAWATCO, LA ENERGÍA DEL DATO.” Source: RevenueBase Database · checked Sep 17, 2026
14	Gradhoc Smart	Indirect evidence	Bergondo, SpainHQ checked Sep 17, 2026	11-50	18 contacts →
	Indirect evidence “Refrigeration failures are expensive.” Source: RevenueBase Database · checked Sep 17, 2026
15	Nexiona	Strong evidence	Barcelona, SpainHQ checked Sep 17, 2026	11-50	15 contacts →
	Strong evidence “Awarded “Best Company in ICT Industry 4.0” in Spain in 2019, Nexiona is a leading Industrial IOT software company driving digital transformation in the Industrial and Commercial…” Source: RevenueBase Database · checked Sep 17, 2026
16	Energiot	Strong evidence	Bellaterra, SpainHQ checked Sep 17, 2026	11-50	15 contacts →
	Strong evidence “Energiot is transforming grid management with self-powered IoT devices, powered by patented piezoelectric energy harvesters, and advanced grid analytics software.” Source: RevenueBase Database · checked Sep 17, 2026
17	Co2 Smart Tech - Co2st	Strong evidence	A Coruña, SpainHQ checked Sep 17, 2026	11-50	12 contacts →
	Strong evidence “energymanagement #energyefficiency #Industry4.0 #digitalisation #preventivemaintenance #IOT #BI At CO2 Smart Tech we help your organisation to be more sustainable, digital and…” Source: RevenueBase Database · checked Sep 17, 2026
18	Aseprel	Partial evidence	Murcia, SpainHQ checked Sep 17, 2026	11-50	12 contacts →
	Partial evidence “Aseprel desarrolla su actividad en el campo de la gestión informatizada y el control de la energía eléctrica desde hace más de 25 años.” Source: RevenueBase Database · checked Sep 17, 2026
19	Nespra	Partial evidence	Valencia, SpainHQ checked Sep 17, 2026	11-50	11 contacts →
	Partial evidence “Nespra is an Enterprise IoT Platform that transforms real-world data into actionable business intelligence.” Source: RevenueBase Database · checked Sep 17, 2026
20	Effitronix	Partial evidence	Tona, SpainHQ checked Sep 17, 2026	1-10	11 contacts →
	Partial evidence “Ayudamos a la industria a reducir costes, prevenir fallos y obtener control en tiempo real a través de los datos.” Source: RevenueBase Database · checked Sep 17, 2026
21	Datision	Indirect evidence	Terrassa, SpainHQ checked Sep 17, 2026	1-10	11 contacts →
	Indirect evidence “En Datision entendemos tus necesidades y encontramos soluciones a través de la implementación de la Inteligencia Artificial.” Source: RevenueBase Database · checked Sep 17, 2026
22	Cloud Studio IOT	Strong evidence	Madrid, SpainHQ checked Sep 17, 2026	11-50	11 contacts →
	Strong evidence “We've spent over 25 years developing industrial IoT projects, and we've learned something few can claim: artificial intelligence is brilliant, but it's blind without real-world…” Source: RevenueBase Database · checked Sep 17, 2026
23	Perfect Numbers	Partial evidence	Villalba, SpainHQ checked Sep 17, 2026	1-10	11 contacts →
	Partial evidence “Perfect Numbers \| IoT para un mundo más eficiente En Perfect Numbers, diseñamos e implementamos soluciones IoT innovadoras para optimizar el consumo de recursos, mejorar la…” Source: RevenueBase Database · checked Sep 17, 2026
24	Womaster	Strong evidence	Barcelona, SpainHQ checked Sep 17, 2026	51-200	11 contacts →
	Strong evidence “With over 20 years of industrial IoT market experience, WoMaster Group is deemed as one of the leading IoT provider in Industrial world.” Source: RevenueBase Database · checked Sep 17, 2026
25	N3uron	Partial evidence	Madrid, SpainHQ checked Sep 17, 2026	11-50	11 contacts →
	Partial evidence “N3uron software is an Industrial Edge Platform for IIoT and DataOps that streamlines the flow of data between industrial systems and business applications, either on-premise or in…” Source: RevenueBase Database · checked Sep 17, 2026

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: industrial iot energy companies. 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 industrial iot energy companies.
Partial evidence: Its own public description names part of industrial iot energy companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name industrial iot energy companies. 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 147 industrial iot energy companies based in Spain

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Industrial iot energy companies based in Spain at a glance

As of Sep 17, 2026

8.9%Verified-email coverage

16.6Average contacts per company

1-10Median size (employees)

16.3%Largest-city concentration · Madrid

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

5,001-10,000

Email recency for this list is measured worldwide rather than for Spain, so it is reported there. Company counts and contact totals on this page are exact for Spain, over 147 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 industrial iot energy companies, 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 Spain whose own description of what they do matches “industrial iot energy companies”. 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 industrial iot energy companies), 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 industrial iot energy companies, 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 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, 216 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 17, 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 industrial iot energy companies, 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 industrial iot energy companies are there based in Spain?

RevenueBase identified 147 industrial iot energy companies 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?

Siemsa, headquartered in Madrid, tops this list with the largest team on record.

Which city has the most industrial iot energy companies?

Madrid leads with 24 headquartered companies, followed by Barcelona (10) and Valencia (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 216 verified decision-maker contacts tracked across these 147 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 17, 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.