Company lists · Data refreshed October 2026

Top 25 Energy efficiency engineering consultants based in Spain

Name: Energy efficiency engineering consultants based in Spain
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 12, 2026 1,131 companies tracked

RevenueBase identified 1,131 company matches for energy efficiency engineering consultants associated with Spain as of October 2026 and tracks 8,793 professional contacts across them, including 838 with verified work emails. Madrid is the largest hub.

This list covers company matches for energy efficiency engineering consultants associated with Spain, 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 October 12, 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 RevenueBase SmartSearch · Exact Recorded Oct 12, 2026 How this list was built

1,131Companies

8,793Contacts tracked

838Verified emails

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The 25 largest energy efficiency engineering consultants based in Spain

Ranked by team size

Top 25 of 1,131 company matches for energy efficiency engineering consultants based in Spain, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 12, 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Inerco	Exact match	Seville, SpainHQ recorded Oct 12, 2026	1,001-5,000	735 contacts →
	Exact match “INERCO is a multinational technology company specialising in sustainability.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
2	AESA	Exact match	Barcelona, SpainHQ recorded Oct 12, 2026	n/a	376 contacts →
	Exact match “Ingeniería y Consultoría Energética orientada a la búsqueda y el desarrollo de soluciones energéticas de alta eficiencia para sus Clientes.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
3	PGI Engineering & Consulting	Exact match	Barcelona, SpainHQ recorded Oct 12, 2026	51-200	206 contacts →
	Exact match “PGI Engineering & Consulting es una empresa global de servicios de ingeniería y consultoría que trabaja transversalmente para dar las mejores soluciones técnicas de diseño a…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
4	Grupo Tecman	Exact match	Erandio, SpainHQ recorded Oct 12, 2026	201-500	171 contacts →
	Exact match “Empresa de servicios energéticos, dirigidos a la empresa privada y a la administración pública, focalizada en las áreas siguientes: Eficiencia energética Ingeniería y montaje de…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
5	MAI Group	Exact match	Madrid, SpainHQ recorded Oct 12, 2026	51-200	168 contacts →
	Exact match “MAI has been in international consultancy for over 25 years driving energy and environmental project around the world, helping to design and plan reliable supply systems based on…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
6	Quantica Renovables	Exact match	Bollullos De La Mitación, SpainHQ recorded Oct 12, 2026	201-500	164 contacts →
	Exact match “QUANTICA Renovables is a company dedicated to providing cost and carbon efficiencies.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
7	Valladares Ingeniería S.L	Exact match	Madrid, SpainHQ recorded Oct 12, 2026	51-200	146 contacts →
	Exact match “Within VALLADARES_ing, engineering challenges are part of our everyday" Global engineering and sustainable buildings Applying our vast experience we strive to provide our clients…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
8	Agefred	Exact match	Barcelona, SpainHQ recorded Oct 12, 2026	51-200	101 contacts →
	Exact match “Agefred se destaca como líder en Cataluña en el ámbito de servicios energéticos, acumulando una vasta experiencia desde su creación en 1974.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
9	Grupo Argenia	Exact match	Seville, SpainHQ recorded Oct 12, 2026	51-200	101 contacts →
	Exact match “Somos una consultora especializada en edificación, nuestra experiencia se ha desarrollado principalmente en los sectores industrial, retail, y hotelero.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
10	Grupo Trebol Energia	Exact match	Sant Joan Despi, SpainHQ recorded Oct 12, 2026	51-200	98 contacts →
	Exact match “We are one of the leading energy business consultancies in Spain.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
11	NESS	Exact match	Madrid, SpainHQ recorded Oct 12, 2026	11-50	84 contacts →
	Exact match “NESS, empresa de servicios energéticos especializada en la gestión y ahorro energético.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
12	Tresca Ingeniería, S.A	Exact match	Léon, SpainHQ recorded Oct 12, 2026	51-200	81 contacts →
	Exact match “Tresca Ingeniería nace en 2001, ofreciendo a sus clientes servicios de ingeniería y consultoría en los sectores industrial, terciario y residencial.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
13	Vivendio Grupo Aconser	Exact match	Granada, SpainHQ recorded Oct 12, 2026	51-200	73 contacts →
	Exact match “En Vivendio, empresa perteneciente a Grupo Aconser, nos dedicamos a la eficiencia y rehabilitación energética.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
14	Commtech Commissioning Services	Exact match	Las Rozas De Madrid, SpainHQ recorded Oct 12, 2026	11-50	67 contacts →
	Exact match “BRINGING BUILDINGS TO LIFE” Commtech Commissioning Services, es una empresa independiente especializada en la prestación de servicios de commissioning, puesta en marcha y…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
15	Azigrene Energy Consulting	Exact match	Valencia/valència, SpainHQ recorded Oct 12, 2026	51-200	56 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
16	Boquet	Exact match	Mataró, SpainHQ recorded Oct 12, 2026	51-200	55 contacts →
	Exact match “4th generation family business founded in 1904.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
17	Bettergy	Exact match	Málaga, SpainHQ recorded Oct 12, 2026	11-50	54 contacts →
	Exact match “betterenergy Ponemos tus datos energéticos en acción.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
18	Konery	Exact match	Murcia, SpainHQ recorded Oct 12, 2026	51-200	53 contacts →
	Exact match “Somos una ingeniería cuya misión es la mejora de la eficiencia energética e implantación de energías renovables como vía para cuidar el medio ambiente y mejorar la competitividad…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
19	GEM Soluciones Industriales	Exact match	Palma De Mallorca, SpainHQ recorded Oct 12, 2026	201-500	51 contacts →
	Exact match “La experiencia de más de 30 años en el sector de la industria hotelera nos permite dar a cada proyecto su dimensión exacta, en compromiso permanente con la eficiencia energética.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
20	Balantia By Iberdrola	Exact match	Palma De Mallorca, SpainHQ recorded Oct 12, 2026	11-50	47 contacts →
	Exact match “BALANTIA develops turnkey projects and a wide variety of energy services to achieve energy optimization.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
21	Montajes Eléctricos García	Exact match	Zaragoza, SpainHQ recorded Oct 12, 2026	201-500	45 contacts →
	Exact match “En MEG trabajamos con energía para aportar soluciones energéticas eficientes a nuestros clientes.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
22	Cambioenergetico	Exact match	Coria, SpainHQ recorded Oct 12, 2026	51-200	43 contacts →
	Exact match “Especialistas en ahorro energético y eficiencia energética.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
23	Cias COM 2001	Exact match	Barcelona, SpainHQ recorded Oct 12, 2026	11-50	38 contacts →
	Exact match “CIAS COM consultoría especializada en la contratación, control de servicios generales y gestión de la eficiencia energética en Administraciones Públicas y organizaciones privadas” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
24	JSS Efficient Engineering	Exact match	Barcelona, SpainHQ recorded Oct 12, 2026	11-50	37 contacts →
	Exact match “JSS ENGINYERIA I ARQUITECTURA és un despatx fundat per Francesc Juncosa, Mª Lluïsa Sánchez i Carles Subirats el 1990 que integra en l’actualitat professionals de diferents…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
25	Sinceo2 Consultoria Energética	Exact match	Madrid, SpainHQ recorded Oct 12, 2026	51-200	37 contacts →
	Exact match “Sujeto Delegado del sistema CAEs, Certificados de Ahorro Energético.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “energy efficiency engineering consultants”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 1,131 energy efficiency engineering consultants based in Spain

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Energy efficiency engineering consultants based in Spain at a glance

As of Oct 12, 2026

9.5%Verified-email coverage

7.8Average contacts per company

1-10Median size (employees)

16.2%Largest-city concentration · Madrid

Oct 12, 2026Page data refreshed

Companies by employee count

1-10

730

11-50

332

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 1,131 companies.

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.
What qualifies: Company records associated with Spain whose business descriptions match “energy efficiency engineering 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. Where headquarters information is recorded, preview rows are also filtered to this page’s location. 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 838 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 October 12, 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.

Energy efficiency engineering consultants by metro

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 “energy efficiency engineering consultants”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many energy efficiency engineering consultants are there based in Spain?

RevenueBase identified 1,131 company matches for energy efficiency engineering consultants associated with Spain as of October 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?

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

Which city has the most energy efficiency engineering consultants?

Madrid leads with 183 company records, followed by Barcelona (89) and Valencia (39).

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 838 professional contacts with verified work emails tracked across these 1,131 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 October 12, 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.