Company lists · Data refreshed September 2026
Top 25 Building energy optimization companies based in Spain
RevenueBase identified 852 building energy optimization companies headquartered in Spain as of September 2026 and tracks 5,775 professional contacts across them, including 538 with verified work emails. Madrid is the largest hub.
This list covers building energy optimization 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 16, 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.
The 25 largest building energy optimization companies based in Spain
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 279 contacts → | ||||
Indirect evidence “Grupo Remica se crea en 1984 como empresa de instalación y mantenimiento de sistemas de calefacción, climatización y ACS.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 2 | 162 contacts → | ||||
Indirect evidence “QUANTICA Renovables is a company dedicated to providing cost and carbon efficiencies.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 3 | 153 contacts → | ||||
Partial evidence “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…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 4 | 88 contacts → | ||||
Partial evidence “Agefred se destaca como líder en Cataluña en el ámbito de servicios energéticos, acumulando una vasta experiencia desde su creación en 1974.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 5 | 81 contacts → | ||||
Partial evidence “NESS, empresa de servicios energéticos especializada en la gestión y ahorro energético.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 6 | 76 contacts → | ||||
Partial evidence “Hola, somos Engel Energy y hacemos the good-good energy.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 7 | 73 contacts → | ||||
Partial evidence “En Vivendio, empresa perteneciente a Grupo Aconser, nos dedicamos a la eficiencia y rehabilitación energética.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 8 | 65 contacts → | ||||
Partial evidence “The energy industry is broken: oligopolistic in nature, high and unpredictable prices, highly pollutant and mostly non-digital results in it being the worst rated industry in…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 9 | 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 16, 2026Thanks. The Data Team will review it. | |||||
| 10 | 53 contacts → | ||||
Strong 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 16, 2026Thanks. The Data Team will review it. | |||||
| 11 | 52 contacts → | ||||
Partial evidence “betterenergy Ponemos tus datos energéticos en acción.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 12 | 51 contacts → | ||||
Partial evidence “We are disrupting the energy industry to change the world for better.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 13 | 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 16, 2026Thanks. The Data Team will review it. | |||||
| 14 | 48 contacts → | ||||
Indirect evidence “4th generation family business founded in 1904.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 15 | 45 contacts → | ||||
Partial evidence “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.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 16 | 44 contacts → | ||||
Partial evidence “We are an engineering and consulting company specialised in solar energy and energy efficiency.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 17 | 42 contacts → | ||||
Partial evidence “Especialistas en ahorro energético y eficiencia energética.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 18 | 41 contacts → | ||||
Strong evidence “BALANTIA develops turnkey projects and a wide variety of energy services to achieve energy optimization.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 19 | 39 contacts → | ||||
Partial evidence “Nuestra visión es hacer que todos podamos vivir de las energías renovables para siempre y gratis.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 20 | 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 16, 2026Thanks. The Data Team will review it. | |||||
| 21 | 33 contacts → | ||||
Partial evidence “Emececuadrado es una de las principales compañías del sector energético, especializada en el asesoramiento y la optimización de recursos energéticos para empresas, organismos…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 22 | 30 contacts → | ||||
Partial 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 16, 2026Thanks. The Data Team will review it. | |||||
| 23 | 30 contacts → | ||||
Partial 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 16, 2026Thanks. The Data Team will review it. | |||||
| 24 | 30 contacts → | ||||
Indirect evidence “Bajamos tu factura de luz y gas.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 25 | 29 contacts → | ||||
Partial evidence “EDA Instalaciones y Energía S.L, es una empresa con amplia experiencia en el sector de las instalaciones integrales, mantenimientos y estudios de eficiencia energética.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
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: building energy optimization 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 building energy optimization companies.
- Partial evidence
- Its own public description names part of building energy optimization companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name building energy optimization 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 852 building energy optimization companies based in Spain
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Building energy optimization companies based in Spain at a glance
As of Sep 16, 2026Companies by employee count
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 852 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 building energy optimization 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 “building energy optimization 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 building energy optimization 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 building energy optimization 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, 538 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 16, 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.
Building energy optimization companies by metro
- Building energy optimization companies in Madrid154
- Building energy optimization companies in Barcelona67
- Building energy optimization companies in Valencia32
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 building energy optimization 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 building energy optimization companies are there based in Spain?
RevenueBase identified 852 building energy optimization 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?
Remica, headquartered in Madrid, tops this list with the largest team on record.
Which city has the most building energy optimization companies?
Madrid leads with 154 headquartered companies, followed by Barcelona (67) and Valencia (32).
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 538 verified decision-maker contacts tracked across these 852 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 16, 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.
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