Company lists · Data refreshed September 2026
Top 25 Utility companies based in Italy
RevenueBase identified 285 utility companies headquartered in Italy as of September 2026 and tracks 33,652 professional contacts across them, including 14,110 with verified work emails. Milano is the largest hub.
This list covers utility 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 22, 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 utility companies based in Italy
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 15,726 contacts → | ||||
Indirect evidence “We are a multinational company reshaping the future of energy and one of the world’s leading integrated electricity operators.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 2 | 2,944 contacts → | ||||
Indirect evidence “The Hera Group is the first Italian coalescence of municipally owned companies that (adopting a multi-business approach oriented to the creation of shared value for all…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 3 | 2,239 contacts → | ||||
Indirect evidence “Iren is one of the largest and most dynamic multiutility companies on the Italian scene and operates in the sectors of electricity, thermal energy for district heating and gas…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 4 | 1,932 contacts → | ||||
Indirect evidence “Italgas è una Network Tech Company, leader nei settori della distribuzione del gas, dei servizi idrici, dell’efficienza energetica e dell’IT.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 5 | 530 contacts → | ||||
Indirect evidence “Unareti è la società unica per i servizi a rete che gestisce in modo integrato e capillare la distribuzione di energia elettrica e gas.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 6 | 512 contacts → | ||||
Indirect evidence “Efficienza energetica e mobilità elettrica per le PMI.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 7 | 471 contacts → | ||||
Indirect evidence “AcegasApsAmga S.p.A.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 8 | 383 contacts → | ||||
Indirect evidence “2i Rete Gas è una realtà industriale che si occupa della distribuzione del gas in oltre 2 mila comuni presenti sull’intero territorio nazionale.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 9 | 377 contacts → | ||||
Indirect evidence “Il Gruppo Unoenergy da oltre 20 anni è uno dei primi operatori - a capitale interamente privato - per la fornitura di gas naturale, energia elettrica e servizi di efficientamento…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 10 | 368 contacts → | ||||
Indirect evidence “IRETI è la società del Gruppo Iren che gestisce in modo integrato e capillare sul territorio nazionale la distribuzione di energia elettrica, gas e acqua, cercando ogni giorno con…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 11 | 320 contacts → | ||||
Indirect evidence “Illumia supply electricity, gas and energy saving services to end customers in Italy.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 12 | 297 contacts → | ||||
Indirect evidence “AIMAG SpA è un’azienda multiutility che gestisce servizi energetici, ambientali e tecnologici in quattordici Comuni dell’area Nord della provincia di Modena ed in sette Comuni…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 13 | 289 contacts → | ||||
Indirect evidence “Areti is one of the main Italian operators with around 10 TWh of electricity distributed in Rome, where it manages the electricity network serving over 1.6 million delivery points.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 14 | 226 contacts → | ||||
Indirect evidence “Siamo l'energia #sempreunpassoavanti!” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 15 | 210 contacts → | ||||
Indirect evidence “Nel 1998 l’Azienda Servizi Municipalizzati di Mantova, costituita nel 1908 dalla precedente Officina del Gas, viene trasformata in Società per Azioni e diventa Tea, Territorio…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 16 | 120 contacts → | ||||
Indirect evidence “Bluenergy Group è la multiutility nata in Friuli Venezia Giulia che dal 2002 opera nel mercato della fornitura di luce e gas servendo privati, PMI e grandi imprese di tutto il…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 17 | 110 contacts → | ||||
Indirect evidence “Union S.p.A.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 18 | 93 contacts → | ||||
Indirect evidence “Acea Pinerolese Industriale S.p.A, multiutility del torinese modello di efficienza e innovazione del settore pubblico, Acea Pinerolese Industriale Spa è una società a totale…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 19 | 80 contacts → | ||||
Indirect evidence “ENERcom srl nasce nel 2002 per gestire l'attività di vendita del gas metano ai clienti finali in modo separato dall'attività di distribuzione, così come previsto dal processo di…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 20 | 77 contacts → | ||||
Indirect evidence “Siamo la multiutility di riferimento per le famiglie e le imprese presenti nei territori di Terni e provincia.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 21 | 70 contacts → | ||||
Indirect evidence “Simecom nasce il 1° gennaio 2003 con lo scopo di vendere Gas nel Nord Italia.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 22 | 63 contacts → | ||||
Indirect evidence “Futurenergy è un'azienda di fornitura di luce e gas, ed un punto di riferimento nel settore energetico.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 23 | 62 contacts → | ||||
Indirect evidence “Il 1° gennaio 2008 nasce il Gruppo AEB-Gelsia, erede dell'esperienza e della storia delle aziende municipali che fin dai primi anni del 1900 hanno fornito i principali servizi…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 24 | 60 contacts → | ||||
Indirect evidence “AMG ENERGIA s.p.a.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 25 | 57 contacts → | ||||
Indirect evidence “Gritti Energia dal 1959 ha fatto della fornitura di energia alle famiglie e alle imprese italiane il proprio impegno imprenditoriale.” Source: RevenueBase Database · checked Sep 22, 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: utility 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 utility companies.
- Partial evidence
- Its own public description names part of utility companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name utility 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 285 utility companies based in Italy
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Utility companies based in Italy at a glance
As of Sep 22, 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 285 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 utility 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 “utility 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 utility 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 utility 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, 14,110 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 22, 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.
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 utility 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 utility companies are there based in Italy?
RevenueBase identified 285 utility 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?
Enel Group, headquartered in Rome, tops this list with the largest team on record.
Which city has the most utility companies?
Milano leads with 14 headquartered companies, followed by Milano Mi (11) and Roma (11).
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 14,110 verified decision-maker contacts tracked across these 285 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 22, 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.