Company lists · Data refreshed September 2026
Top 25 Decarbonization companies based in Italy
RevenueBase identified 428 decarbonization companies headquartered in Italy as of September 2026 and tracks 28,717 professional contacts across them, including 8,730 with verified work emails. Roma is the largest hub.
This list covers decarbonization companies headquartered in Italy, 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 15, 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 decarbonization companies based in Italy
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 20,038 contacts → | ||||
Indirect evidence “Eni is an integrated energy company, founded in 1953, with 31.376 employees in 69 countries around the world, including Algeria, Angola, Mozambique, Mexico, Indonesia and Italy.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 2 | 766 contacts → | ||||
Indirect evidence “Nata a Prato nel 2003 è oggi una delle più importanti realtà nel mercato della Green Economy.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 3 | 255 contacts → | ||||
Indirect evidence “Renovit Società Benefit è un primario operatore nel mercato dell’efficienza energetica, nato da un'iniziativa di Snam e CDP Equity.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 4 | 140 contacts → | ||||
Indirect evidence “A national player in energy efficiency and sustainability: Geoside is the Energy Service Company (ESCo) of Italgas Group and a leader in Italy and Europe in the field of energy…” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 5 | 99 contacts → | ||||
Indirect evidence “Non siamo tecnici, ma progettisti consapevoli di essere parte del cambiamento.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 6 | 99 contacts → | ||||
Indirect evidence “Founded in 1956, ROBUR designs, engineers and manufactures heating and cooling systems and solutions for residential, commercial, PA and industrial applications.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 7 | 89 contacts → | ||||
Indirect evidence “Since its founding in 1987, TPI (SIAD Group) has established itself as an innovative company with a strong focus on operational excellence, safety, and environmental…” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 8 | 89 contacts → | ||||
Strong evidence “Sense Reply is the Reply group company specializing in end-to-end solutions for the decarbonization of the Energy & Utilities, Oil & Gas, Automotive, Telecommunications, Smart…” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 9 | 85 contacts → | ||||
Indirect evidence “Ogni giorno, lavoriamo per generare un impatto positivo sull'ambiente e sulla società.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 10 | 83 contacts → | ||||
Indirect evidence “Advanced industrial knowledge and detailed research help us deliver renewable and cost-effective energy to tens of thousands of businesses and homes around the world.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 11 | 79 contacts → | ||||
Indirect evidence “Siamo al tuo fianco per intraprendere un percorso di sostenibilità.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 12 | 69 contacts → | ||||
Indirect evidence “In a world where environmental responsibility and corporate accountability are more crucial than ever, Redecam stands at the forefront of innovation and sustainability.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 13 | 60 contacts → | ||||
Indirect evidence “Con oltre 180 anni di storia, Iberdrola è uno dei leader globali dell’energia rinnovabile e della transizione energetica.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 14 | 59 contacts → | ||||
Indirect evidence “Energy Italy SpA, azienda parte del gruppo Energy Holding, dal 2012 è tra le realtà più innovative nel settore delle energie rinnovabili e del risparmio energetico.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 15 | 57 contacts → | ||||
Indirect evidence “EVA: il tuo partner per un futuro energetico sostenibile.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 16 | 53 contacts → | ||||
Indirect evidence “Inergia was founded in 2003 with the strategic diversification of the Santarelli group, a leader in Italy’s real estate industry.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 17 | 52 contacts → | ||||
Indirect evidence “AzzeroCO2 offre a enti pubblici, imprese, cittadini, la possibilità di contribuire attivamente a ridurre le emissioni dei gas serra.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 18 | 50 contacts → | ||||
Indirect evidence “RESET is a cleantech engineering and manufacturing company.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 19 | 43 contacts → | ||||
Indirect evidence “In the Italian and international context, is an unparalleled entity that promotes the companies’ ecological transition.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 20 | 43 contacts → | ||||
Indirect evidence “Gaia Energy Systems opera da anni nei settori delle energie rinnovabili e dell’efficientamento energetico, sia al fianco di aziende che di privati.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 21 | 42 contacts → | ||||
Indirect evidence “OGNI GIORNO AIUTIAMO LE AZIENDE A DIVENTARE PIÙ EFFICIENTI, A RIDURRE I CONSUMI, A GENERARE AUTONOMAMENTE L’ENERGIA PULITA IN GRADO DI SODDISFARE IL PROPRIO FABBISOGNO.” Il nostro…” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 22 | 41 contacts → | ||||
Indirect evidence “Da oltre un decennio, ci impegniamo nel settore delle energie rinnovabili con una visione chiara incentrata sulla sostenibilità, l'efficienza energetica e la fornitura di servizi…” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 23 | 40 contacts → | ||||
Indirect evidence “Esserenergia S.p.A è un’azienda giovane e piena di entusiasmo che fa parte di un gruppo industriale solido e di successo.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 24 | 40 contacts → | ||||
Indirect evidence “VP Solar company subject to management and coordination by Tadiran Group Ltd has been working in the field of renewable energy and energy saving since Led by innovation in R&D VP…” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 25 | 37 contacts → | ||||
Indirect evidence “We are protagonists of the third industrial revolution, a new post-carbon dioxide era in which millions of people produce clean energy with their own buildings, allocating the…” Source: RevenueBase Database · checked Sep 15, 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: decarbonization 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 decarbonization companies.
- Partial evidence
- Its own public description names part of decarbonization companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name decarbonization 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 428 decarbonization companies based in Italy
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Decarbonization companies based in Italy at a glance
As of Sep 15, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for Italy, so it is reported there. Company counts and contact totals on this page are exact for Italy, over 428 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 decarbonization 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 Italy whose own description of what they do matches “decarbonization 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 decarbonization 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 decarbonization companies, and records with no verified work email. Companies headquartered outside Italy 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, 8,730 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 15, 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.
Decarbonization companies by metro
- Decarbonization companies in Roma27
- Decarbonization companies in Milano25
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 decarbonization 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 decarbonization companies are there based in Italy?
RevenueBase identified 428 decarbonization companies headquartered in Italy 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?
ENI, headquartered in Italy, tops this list with the largest team on record.
Which city has the most decarbonization companies?
Roma leads with 27 headquartered companies, followed by Milano (25) and Milan (23).
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 8,730 verified decision-maker contacts tracked across these 428 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 15, 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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