Company lists · Data refreshed September 2026
Top 25 Esco companies based in Italy
RevenueBase identified 439 esco companies headquartered in Italy as of September 2026 and tracks 6,620 professional contacts across them, including 2,876 with verified work emails. Milano is the largest hub.
This list covers esco 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 19, 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 esco companies based in Italy
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 852 contacts → | ||||
Indirect evidence “Pagina ufficiale del gruppo Sonerpar Italia, leader nella distribuzione di materiale e soluzioni per i professionisti del settore elettrico.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 2 | 413 contacts → | ||||
Strong evidence “GETEC Italia, piattaforma italiana del Gruppo, è una ESCo specializzata nella fornitura di soluzioni all’avanguardia nel settore dell’efficienza energetica in Italia, con più di…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 3 | 389 contacts → | ||||
Indirect evidence “Cembre is today the leading Italian manufacturer and one of the largest European manufacturers of electrical compression connectors and related installation tooling.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 4 | 214 contacts → | ||||
Indirect evidence “Telmotor SpA nasce a Bergamo nel 1973 come azienda specializzata nelle forniture elettriche e nella distribuzione di prodotti e marchi di qualità per l’automazione industriale.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 5 | 209 contacts → | ||||
Indirect evidence “SCAME PARRE S.p.A, head of the SCAME group, is a manufacturer of components and systems for electrical installations in the civil, services and industrial sector, born and raised…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 6 | 172 contacts → | ||||
Indirect evidence “Semar Srl, with more than 600 employees, is a leading manufacturer of electronic and electromechanical products.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 7 | 155 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 8 | 140 contacts → | ||||
Strong 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 19, 2026Thanks. The Data Team will review it. | |||||
| 9 | 134 contacts → | ||||
Indirect evidence “Gruppo Bonomi was founded in Lumezzane in 1928 as a foundry of non-ferrous alloys and expands its production over the years thanks to the acquisition of brands such as Rebosio…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 10 | 66 contacts → | ||||
Indirect evidence “Nata dall'esperienza acquisita sul campo come imprenditori nei settori strategici della siderurgia e della chimica, la nostra società mette a disposizione servizi altamente…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 11 | 63 contacts → | ||||
Indirect evidence “Nata nel 1990, Ecocerved è oggi la società consortile del sistema italiano delle Camere di Commercio che opera nel campo dei sistemi informativi per l’ambiente.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 12 | 62 contacts → | ||||
Indirect evidence “Da oltre 25 anni ci impegniamo nell'applicazione di sistemi e tecnologie in grado di portare innovazione in tutto ciò che riguarda l’utilizzo razionale delle fonti di energia.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 13 | 57 contacts → | ||||
Strong evidence “ENERQOS Energy Solutions - an Ameresco Company è una Energy Service Company (ESCo) certificata secondo la norma UNI CEI 11352:2014 che propone soluzioni innovative di…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 14 | 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 19, 2026Thanks. The Data Team will review it. | |||||
| 15 | 50 contacts → | ||||
Indirect evidence “Fondata in Italia nel 1952, Cabur ha conquistato in breve tempo il ruolo di leader fra i costruttori nazionali di morsetti per quadri elettrici, ponendo sempre particolare…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 16 | 50 contacts → | ||||
Indirect evidence “Born Italian, grown up European, worldwide citizen today.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 17 | 45 contacts → | ||||
Indirect evidence “About us The Würth Elektronik Group of companies has about 7,900 employees worldwide and generated global sales of € 1.24 billion in 2023 (preliminary).” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 18 | 44 contacts → | ||||
Indirect evidence “Dall’unione di alcune tra le più importanti società di servizi energetici della Lombardia e in un contesto altamente competitivo, Astolia è la Energy Service Company del Gruppo…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 19 | 43 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 20 | 43 contacts → | ||||
Indirect evidence “Founded in 1975, SECOM is a leading distributor in the fuses and semiconductors market.” Source: RevenueBase Database · checked Sep 19, 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 19, 2026Thanks. The Data Team will review it. | |||||
| 22 | 38 contacts → | ||||
Indirect evidence “Pratichiamo un’INGEGNERIA PER LA SOSTENIBILITÀ fatta di servizi di progettazione e interventi tecnologici destinati a persone, aziende e territorio, con la volontà di contribuire…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 23 | 31 contacts → | ||||
Indirect evidence “Cogenio is an energy-efficiency service platform set up to help businesses cut their energy costs and CO2 emissions, by providing them with solutions designed to improve their…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 24 | 30 contacts → | ||||
Indirect evidence “OUR MISSION IS COMPLETE CUSTOMER SATISFACTION!” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 25 | 30 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 19, 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: esco 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 esco companies.
- Partial evidence
- Its own public description names part of esco companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name esco 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 439 esco companies based in Italy
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Esco companies based in Italy at a glance
As of Sep 19, 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 439 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 esco 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 “esco 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 esco 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 esco 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, 2,876 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 19, 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 esco 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 esco companies are there based in Italy?
RevenueBase identified 439 esco 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?
Sonepar Italia, headquartered in Padova, tops this list with the largest team on record.
Which city has the most esco companies?
Milano leads with 22 headquartered companies, followed by Milano Mi (13) and Bologna (10).
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 2,876 verified decision-maker contacts tracked across these 439 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 19, 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.