Company lists · Data refreshed September 2026
Top 25 Power-to-gas companies based in Spain
RevenueBase identified 95 power-to-gas companies headquartered in Spain as of September 2026 and tracks 2,364 professional contacts across them, including 325 with verified work emails. Madrid is the largest hub.
This list covers power-to-gas 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 20, 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 power-to-gas companies based in Spain
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 415 contacts → | ||||
Partial evidence “Somos la distribuidora de gas del grupo Naturgy, y la compañía líder en la actividad de distribución de gas natural en España, donde operamos a través de nuestras diferentes…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 2 | 216 contacts → | ||||
Indirect evidence “TCI GECOMP es una empresa de Ingeniería y Construcción especializada en Energías renovables e Hidrógeno Verde con presencia en España, Perú, Chile y Argentina.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 3 | 205 contacts → | ||||
Partial evidence “Grupo Redexis es un conjunto de sociedades de infraestructuras comprometidas con la transición energética, el desarrollo de los gases renovables y el crecimiento sostenible…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 4 | 175 contacts → | ||||
Indirect evidence “Greening is a global, vertically integrated renewable energy company that not only generates and markets its own green energy, but does so through a diversified portfolio of…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 5 | 153 contacts → | ||||
Partial evidence “Nortegas es una compañía de infraestructuras y servicios energéticos que cuenta con más de un millón de clientes, tanto domésticos como industriales, a quienes suministra gas…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 6 | 121 contacts → | ||||
Indirect evidence “Verdalia Bioenergy aims to become a leading energy transition player focused on developing, acquiring and operating biomethane plants.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 7 | 71 contacts → | ||||
Indirect evidence “Univergy Solar es una empresa hispano-japonesa especializada en el desarrollo y construcción de proyectos de energía solar, eólica y de hidrógeno verde, incluyendo soluciones de…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 8 | 60 contacts → | ||||
Indirect evidence “H2B2 is a technology-based company that promotes, develops, finances, designs, integrates, builds, operates and maintains systems based on electrolyzers for hydrogen production…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 9 | 51 contacts → | ||||
Indirect evidence “Grupo HAM es líder en el servicio integral de Bio GNL, Bio GNC, Biometano, GNL y GNC en industrias y entornos móviles-vehiculares.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 10 | 48 contacts → | ||||
Partial evidence “Enagás Renovable has a portfolio of more than 20 specific projects in Spain in the field of renewable gases and decarbonisation, representing one of the largest European platforms…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 11 | 43 contacts → | ||||
Indirect evidence “En Avalon desarrollamos proyectos de energía solar y de generación de hidrogeno verde, prestando servicios en todas las fases necesarias para llevarlos hasta la Operación…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 12 | 42 contacts → | ||||
Indirect evidence “Matteco is a cleantech company accelerating global decarbonization through next-generation advanced material technology.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 13 | 31 contacts → | ||||
Indirect evidence “En DH2 energy creemos que la transición energética debe ser sencilla, accesible y sostenible.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 14 | 30 contacts → | ||||
Indirect evidence “Headquartered in Madrid, Hanwha Energy Europe is a leading player in the renewable energy sector.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 15 | 26 contacts → | ||||
Indirect evidence “KERIONICS is a technology-based company specialized in the development, manufacturing, and commercialization of key components for high-temperature electrolyzers, focusing on SOEL…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 16 | 24 contacts → | ||||
Partial evidence “Bahía de Bizkaia Gas nace a final de la década de los años 90 como consecuencia de la alta penetración del gas natural en la demanda energética del País Vasco, superior a la del…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 17 | 22 contacts → | ||||
Indirect evidence “Nordex Electrolyzers S.L.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 18 | 18 contacts → | ||||
Indirect evidence “Como ingeniería, Base Sistemas lleva años trabajando en los sectores químico y energético realizando una gran cantidad de proyectos con el hidrógeno como protagonista.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 19 | 14 contacts → | ||||
Indirect evidence “At FNX we design, manufacture and install skid-mounted modular plants for biogas upgrading and liquefication.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 20 | 14 contacts → | ||||
Indirect evidence “We are the Re-Evolution of energy.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 21 | 12 contacts → | ||||
Indirect evidence “Underground storage facilities are strategic infrastructure where energy reserves are kept to balance supply and demand and to meet consumption peaks that may occur throughout the…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 22 | 11 contacts → | ||||
Indirect evidence “Soluciones globales para el almacenamiento y gestión de energías renovables, en particular, mediante la producción, almacenamiento y distribución de hidrógeno verde.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 23 | 10 contacts → | ||||
Partial evidence “Energy Storage & Dispatchable Heat and Power Solutions” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 24 | 8 contacts → | ||||
Indirect evidence “Hyren is a new platform committed to the development of green hydrogen projects.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 25 | 8 contacts → | ||||
Indirect evidence “H2Greem is a leading European technology company and manufacturer of next-generation electrolyser solutions based on proton exchange membrane (PEM) technology.” Source: RevenueBase Database · checked Sep 20, 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: power-to-gas 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-to-gas companies.
- Partial evidence
- Its own public description names part of power-to-gas companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name power-to-gas 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 95 power-to-gas companies based in Spain
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Power-to-gas companies based in Spain at a glance
As of Sep 20, 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 95 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-to-gas 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-to-gas 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-to-gas 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-to-gas 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, 325 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 20, 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-to-gas companies by metro
- Power-to-gas companies in Madrid33
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-to-gas 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-to-gas companies are there based in Spain?
RevenueBase identified 95 power-to-gas 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?
Nedgia, Grupo Naturgy, headquartered in Madrid, tops this list with the largest team on record.
Which city has the most power-to-gas companies?
Madrid leads with 33 headquartered companies, followed by Barcelona (4) and Sevilla (3).
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 325 verified decision-maker contacts tracked across these 95 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 20, 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.