Company lists · Data refreshed September 2026

Top 25 Energy infrastructure operators based in Italy

RevenueBase identified 449 company matches for energy infrastructure operators associated with Italy as of September 2026 and tracks 76,020 professional contacts across them, including 28,750 with verified work emails. Milan is the largest hub.

This list covers company matches for energy infrastructure operators associated with Italy, 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 September 16, 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 Sep 16, 2026 How this list was built
449Companies
76,020Contacts tracked
28,750Verified emails
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The 25 largest energy infrastructure operators based in Italy

Ranked by team size
Top 25 of 449 company matches for energy infrastructure operators based in Italy, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 16, 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchMilan, ItalyHQ recorded Sep 16, 202610001+34,095 contacts →

Exact match

“Saipem is a global leader in the engineering and construction of major projects for the energy and infrastructure sectors, both offshore and onshore.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
2Exact matchRome, ItalyHQ recorded Sep 16, 202610001+15,726 contacts →

Exact match

“We are a multinational company reshaping the future of energy and one of the world’s leading integrated electricity operators.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
3Exact matchRome, ItalyHQ recorded Sep 16, 20265,001-10,0004,018 contacts →

Exact match

“We are the Europe's largest independent electricity transmission system operator, representing an Italian excellence with around professionals dedicated daily to the safety of the…”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
4Exact matchBologna, ItalyHQ recorded Sep 16, 20265,001-10,0002,944 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
5Exact matchMilan, ItalyHQ recorded Sep 16, 20261,001-5,0002,721 contacts →

Exact match

“Snam is Europe’s leading operator in natural gas transport, storage and regasification.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
6Exact matchMilan, ItalyHQ recorded Sep 16, 20265,001-10,0001,932 contacts →

Exact match

“Italgas è una Network Tech Company, leader nei settori della distribuzione del gas, dei servizi idrici, dell’efficienza energetica e dell’IT.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
7Exact matchRome, ItalyHQ recorded Sep 16, 20261,001-5,000749 contacts →

Exact match

“Management.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
8Exact matchMilan, ItalyHQ recorded Sep 16, 2026201-500608 contacts →

Exact match

“Da dicembre 2025, abbiamo integrato EF Solare, il primo produttore fotovoltaico italiano.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
9Exact matchBrescia, ItalyHQ recorded Sep 16, 20261,001-5,000530 contacts →

Exact match

“Unareti è la società unica per i servizi a rete che gestisce in modo integrato e capillare la distribuzione di energia elettrica e gas.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
10Exact matchMilan, ItalyHQ recorded Sep 16, 2026501-1,000512 contacts →

Exact match

“Efficienza energetica e mobilità elettrica per le PMI.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
11Exact matchMilan, ItalyHQ recorded Sep 16, 20261,001-5,000383 contacts →

Exact match

“2i Rete Gas è una realtà industriale che si occupa della distribuzione del gas in oltre 2 mila comuni presenti sull’intero territorio nazionale.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
12Exact matchMilan, ItalyHQ recorded Sep 16, 2026501-1,000377 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
13Exact matchRovereto, ItalyHQ recorded Sep 16, 20261,001-5,000369 contacts →

Exact match

“Rinnovabili.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
14Exact matchGenoa, ItalyHQ recorded Sep 16, 2026201-500368 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
15Exact matchGenoa, ItalyHQ recorded Sep 16, 2026201-500355 contacts →

Exact match

“The Axpo Group produces, trades and distributes energy reliably in Switzerland and in over 20 countries throughout Europe.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
16Exact matchRome, ItalyHQ recorded Sep 16, 2026201-500322 contacts →

Exact match

“GEKO opera in tutte le fasi strategiche della filiera energetica, dallo sviluppo, realizzazione, gestione e service di impianti di generazione elettrica alla vendita di energia e…”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
17Exact matchRome, ItalyHQ recorded Sep 16, 2026501-1,000300 contacts →

Exact match

“CEBAT SpA is a leader in utility networks’ development and services.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
18Exact matchRome, ItalyHQ recorded Sep 16, 20261,001-5,000289 contacts →

Exact match

“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.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
19Exact matchCavriago, ItalyHQ recorded Sep 16, 2026501-1,000286 contacts →

Exact match

“Landi Renzo is the global leader in the natural gas, biomethane and hydrogen sustainable mobility and infrastructure sector.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
20Exact matchCollegno, ItalyHQ recorded Sep 16, 202651-200226 contacts →

Exact match

“Siamo l'energia #sempreunpassoavanti!”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
21Exact matchParma, ItalyHQ recorded Sep 16, 2026201-500205 contacts →

Exact match

“Stern Energy, founded in 2008, is an Italy-based company specialized in technical services for photovoltaic plants and BESS systems.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
22Exact matchPadua, ItalyHQ recorded Sep 16, 202651-200194 contacts →

Exact match

“Since June 2025, STE Energy has been acquired by, becoming part of the world.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
23Exact matchAsti, ItalyHQ recorded Sep 16, 2026501-1,000128 contacts →

Exact match

“TSG è il leader europeo nei servizi tecnici per la mobilità e la distribuzione energetica, impegnato a rendere l’energia più sostenibile, efficiente e sicura.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
24Exact matchBologna, ItalyHQ recorded Sep 16, 202651-200112 contacts →

Exact match

“Kineo Energy e Facility è una società che si occupa di gestione e di manutenzione di impianti tecnologici in generale, con particolare specializzazione sul settore della…”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
25Exact matchMilan, ItalyHQ recorded Sep 16, 202651-200110 contacts →

Exact match

“Union S.p.A.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase

Showing 25 of 449 energy infrastructure operators based in Italy

See the full list, filter by size, metro and specialty, and access 28,750 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Energy infrastructure operators based in Italy at a glance

As of Sep 16, 2026
37.8%Verified-email coverage
169.3Average contacts per company
11-50Median size (employees)
13.6%Largest-city concentration · Milan
Sep 16, 2026Page data refreshed

Companies by employee count

1-10
93
11-50
192
51-200
103
201-500
31
501-1,000
12
1,001-5,000
11
5,001-10,000
3
10001+
2

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 449 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 Italy whose business descriptions match “energy infrastructure operators” 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 28,750 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 September 16, 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.

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 infrastructure operators”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many energy infrastructure operators are there based in Italy?

RevenueBase identified 449 company matches for energy infrastructure operators associated with Italy as of September 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?

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

Which city has the most energy infrastructure operators?

Milan leads with 61 company records, followed by Rome (39) and Verona (7).

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 28,750 professional contacts with verified work emails tracked across these 449 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 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 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.