Company lists · Data refreshed September 2026

Top 25 Power quality engineering companies based in Spain

Name: Power quality engineering 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 256 companies tracked

RevenueBase identified 256 power quality engineering companies headquartered in Spain as of September 2026 and tracks 4,029 professional contacts across them, including 439 with verified work emails. Madrid is the largest hub.

This list covers power quality engineering 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

256Companies

4,029Contacts tracked

439Verified emails

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The 25 largest power quality engineering companies based in Spain

Ranked by team size

Top 25 of 256 power quality engineering 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 power quality engineering 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	JG Ingenieros S.A	Indirect evidence	Barcelona, SpainHQ checked Sep 17, 2026	51-200	346 contacts →
	Indirect evidence “JG Ingenieros, S.A.” Source: RevenueBase Database · checked Sep 17, 2026
2	Circutor	Indirect evidence	Viladecavalls, SpainHQ checked Sep 17, 2026	501-1,000	281 contacts →
	Indirect evidence “Technology of Electrical Energy Efficiency.” Source: RevenueBase Database · checked Sep 17, 2026
3	Ingeniería Estudios Y Proyectos Nip,s.A. Nipsa	Strong evidence	Madrid, SpainHQ checked Sep 17, 2026	201-500	236 contacts →
	Strong evidence “Ingeniería Estudios y Proyectos NIP, S.A.(NIPSA) is a Spanish engineering and consulting company created in 1976 with the purpose of providing high quality and flexible technical…” Source: RevenueBase Database · checked Sep 17, 2026
4	Ecointegral Ingeniería, SL	Partial evidence	Córdoba, SpainHQ checked Sep 17, 2026	201-500	234 contacts →
	Partial evidence “ECOINTEGRAL INGENIERÍA is an independent company of advanced engineering and consulting firm that operates in 3 areas of expertise: Energy, Telecommunications and Environment.” Source: RevenueBase Database · checked Sep 17, 2026
5	Iprocel	Indirect evidence	Las Palmas De Gran Canaria, SpainHQ checked Sep 17, 2026	51-200	216 contacts →
	Indirect evidence “IPROCEL es una empresa multinacional fundada en 1993 especializada en la prestación de servicios de ingeniería, puesta en marcha, operación y mantenimiento de sistemas eléctricos…” Source: RevenueBase Database · checked Sep 17, 2026
6	Vestel Ingenieros	Indirect evidence	Paterna, SpainHQ checked Sep 17, 2026	51-200	135 contacts →
	Indirect evidence “Vestel Ingenieros es una empresa con 20 años de experiencia que tiene el propósito de convertirse en la ingeniería eléctrica nº1 de España.” Source: RevenueBase Database · checked Sep 17, 2026
7	Voltae Engineering	Indirect evidence	Sevilla, SpainHQ checked Sep 17, 2026	51-200	132 contacts →
	Indirect evidence “Somos una compañía de ingeniería y consultoría altamente especializada, ofreciendo servicios integrales de alto valor en proyectos de transmisión, distribución y generación de…” Source: RevenueBase Database · checked Sep 17, 2026
8	Osmos Sistemas Eléctricos	Indirect evidence	A Coruña, SpainHQ checked Sep 17, 2026	201-500	121 contacts →
	Indirect evidence “LA EMPRESA Y SUS VALORES Osmos tiene por misión la prestación de servicios eléctricos, abarcando la instalación desde su concepción, realizando el montaje y manteniendo las…” Source: RevenueBase Database · checked Sep 17, 2026
9	Azcatec Tecnología E Ingeniería	Partial evidence	Sevilla, SpainHQ checked Sep 17, 2026	51-200	98 contacts →
	Partial evidence “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: RevenueBase Database · checked Sep 17, 2026
10	Emurtel	Indirect evidence	El Palmar (murcia), SpainHQ checked Sep 17, 2026	51-200	92 contacts →
	Indirect evidence “Emurtel es una compañía líder de ingeniería y consultoría multidisciplinar orientada a la gestión integral de proyectos, ofreciendo soluciones de valor añadido en el diseño…” Source: RevenueBase Database · checked Sep 17, 2026
11	Tresca Ingeniería, S.A	Indirect evidence	Léon, SpainHQ checked Sep 17, 2026	51-200	78 contacts →
	Indirect evidence “Tresca Ingeniería nace en 2001, ofreciendo a sus clientes servicios de ingeniería y consultoría en los sectores industrial, terciario y residencial.” Source: RevenueBase Database · checked Sep 17, 2026
12	Azigrene Energy Consulting	Indirect evidence	Valencia/valència, SpainHQ checked Sep 17, 2026	51-200	58 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 17, 2026
13	Montajes DE Electricidad Moya	Indirect evidence	Almería, SpainHQ checked Sep 17, 2026	51-200	43 contacts →
	Indirect evidence “Proporcionamos un servicio integral que abarca desde el diseño e ingeniería hasta el mantenimiento de instalaciones pasando por todas las fases de asesoramiento, obra, ejecución y…” Source: RevenueBase Database · checked Sep 17, 2026
14	Cuarta Esfera	Indirect evidence	Laguna De Duero, SpainHQ checked Sep 17, 2026	51-200	32 contacts →
	Indirect evidence “Desde nuestra sede en Valladolid, Cuarta Esfera acumula más de 29 años de experiencia ofreciendo soluciones innovadoras en ingeniería industrial.” Source: RevenueBase Database · checked Sep 17, 2026
15	Naturelek Energía E Ingeniería	Indirect evidence	Derio, SpainHQ checked Sep 17, 2026	51-200	30 contacts →
	Indirect evidence “Somos una ingeniería y consultora especializada en eficiencia, gestión y transformación energética para empresas, con un enfoque técnico, integral y orientado a resultados.” Source: RevenueBase Database · checked Sep 17, 2026
16	Itecla Ingeniería S.L	Indirect evidence	Baena, SpainHQ checked Sep 17, 2026	51-200	30 contacts →
	Indirect evidence “ITECLA es una ingeniería especializada en infraestructuras eléctricas de alta y media tensión y en proyectos de energías renovables a escala utility.” Source: RevenueBase Database · checked Sep 17, 2026
17	Ge&pe	Indirect evidence	Sevilla, SpainHQ checked Sep 17, 2026	11-50	30 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 17, 2026
18	ATI Consult	Partial evidence	Pozuelo De Alarcón, SpainHQ checked Sep 17, 2026	51-200	29 contacts →
	Partial evidence “ATI is an engineering consultancy specialized in renewable energy and infrastructure projects.” Source: RevenueBase Database · checked Sep 17, 2026
19	EDE Ingenieros	Indirect evidence	SpainHQ checked Sep 17, 2026	11-50	28 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 17, 2026
20	OSL Iberia	Indirect evidence	Cartagena, SpainHQ checked Sep 17, 2026	51-200	27 contacts →
	Indirect evidence “OSL Iberia es una Ingeniería multidisciplinar con presencia internacional, formado por un equipo de profesionales creativos, que desarrolla e implementa soluciones de calidad y…” Source: RevenueBase Database · checked Sep 17, 2026
21	Insiteca Ingenieros	Indirect evidence	Los Realejos, SpainHQ checked Sep 17, 2026	11-50	27 contacts →
	Indirect evidence “Empresa multidisciplinar que desarrolla servicios integrales y personalizados en los campos de la ingeniería y de consultoría técnica, para empresas de servicios e industriales.” Source: RevenueBase Database · checked Sep 17, 2026
22	Sierra Ingeniería Eléctrica	Indirect evidence	Coslada, SpainHQ checked Sep 17, 2026	51-200	25 contacts →
	Indirect evidence “SIERRA Ingeniería Eléctrica empresa de reconocida trayectoria en los sectores de las instalaciones eléctricas, especiales, ingeniería, mantenimiento y montaje de cuadros…” Source: RevenueBase Database · checked Sep 17, 2026
23	Soltec Ingenieros S.L	Partial evidence	Vigo, SpainHQ checked Sep 17, 2026	11-50	23 contacts →
	Partial evidence “Soltec Ingenieros SL, founded in 2001, is an independent engineering and consulting firm based in Vigo, Spain.” Source: RevenueBase Database · checked Sep 17, 2026
24	Factor Potencia	Indirect evidence	Granollers, SpainHQ checked Sep 17, 2026	11-50	22 contacts →
	Indirect evidence “Factor Potencia es la marca que agrupa a 3 empresas líderes en el sector de bienes de equipo y servicios asociados a la calidad de la energía eléctrica y a la mejora de la…” Source: RevenueBase Database · checked Sep 17, 2026
25	Aelvasa	Indirect evidence	Bilbao, SpainHQ checked Sep 17, 2026	51-200	20 contacts →
	Indirect evidence “Fue constituida oficialmente en Febrero de 1985 y empezó a funcionar como almacén distribuidor de material eléctrico en Bizkaia.” 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: power quality engineering 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 power quality engineering companies.
Partial evidence: Its own public description names part of power quality engineering companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name power quality engineering 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 256 power quality engineering companies based in Spain

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Power quality engineering companies based in Spain at a glance

As of Sep 17, 2026

10.9%Verified-email coverage

15.7Average contacts per company

1-10Median size (employees)

14.5%Largest-city concentration · Madrid

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

135

11-50

51-200

201-500

501-1,000

1,001-5,000

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 256 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 power quality engineering 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 “power quality engineering 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 power quality engineering 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 power quality engineering 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, 439 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.

Power quality engineering companies by metro

Power quality engineering companies in Madrid37

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 power quality engineering 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 power quality engineering companies are there based in Spain?

RevenueBase identified 256 power quality engineering 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?

JG Ingenieros S.A, headquartered in Barcelona, tops this list with the largest team on record.

Which city has the most power quality engineering companies?

Madrid leads with 37 headquartered companies, followed by Barcelona (12) and Sevilla (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 439 verified decision-maker contacts tracked across these 256 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.