Company lists · Data refreshed September 2026

Top 25 Energy efficiency as a service companies based in Italy

Name: Energy efficiency as a service companies based in Italy
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 629 companies tracked

RevenueBase identified 629 energy efficiency as a service companies headquartered in Italy as of September 2026 and tracks 8,082 professional contacts across them, including 2,185 with verified work emails. Milano is the largest hub.

This list covers energy efficiency as a service 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 21, 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 21, 2026 86% judged on-target in blind review

629Companies

8,082Contacts tracked

2,185Verified emails

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The 25 largest energy efficiency as a service companies based in Italy

Ranked by team size

Top 25 of 629 energy efficiency as a service companies based in Italy, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to energy efficiency as a service companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Enegan	Indirect evidence	Vinci, ItalyHQ checked Sep 21, 2026	201-500	655 contacts →
	Indirect evidence “Enegan offre soluzioni personalizzate per le aziende abbinando alla fornitura di elettricità, gas e telecomunicazioni una vasta gamma di prodotti e servizi ad alto valore…” Source: RevenueBase Database · checked Sep 21, 2026
2	Getec Italia	Strong evidence	Gragnano Trebbiense, ItalyHQ checked Sep 21, 2026	1,001-5,000	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 21, 2026
3	Geoside	Strong evidence	Casalecchio Di Reno, ItalyHQ checked Sep 21, 2026	51-200	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 21, 2026
4	Energy Team S.P.A	Partial evidence	Trezzano Sul Naviglio, ItalyHQ checked Sep 21, 2026	51-200	83 contacts →
	Partial evidence “Energy Team è l’operatore italiano leader nel monitoraggio, controllo e gestione del consumo energetico.” Source: RevenueBase Database · checked Sep 21, 2026
5	Energy Wave	Partial evidence	Alessandria, ItalyHQ checked Sep 21, 2026	11-50	80 contacts →
	Partial evidence “è una società che opera nel settore energetico.” Source: RevenueBase Database · checked Sep 21, 2026
6	Clever Servizi Energetici S.P.A	Partial evidence	Rivoli, ItalyHQ checked Sep 21, 2026	51-200	64 contacts →
	Partial evidence “Comat Servizi Energetici S.p.A.” Source: RevenueBase Database · checked Sep 21, 2026
7	Unoenergy Green Solutions SPA	Partial evidence	Cascina, ItalyHQ checked Sep 21, 2026	201-500	63 contacts →
	Partial evidence “Unoenergy Green Solutions è una società del Gruppo Unoenergy che opera su tutto il territorio nazionale attraverso la vendita e l’installazione di sistemi per l’efficientamento…” Source: RevenueBase Database · checked Sep 21, 2026
8	Cristoforetti Servizi Energia S.P.A	Partial evidence	Lavis, ItalyHQ checked Sep 21, 2026	51-200	62 contacts →
	Partial 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 21, 2026
9	Gesco SPA	Indirect evidence	Monteriggioni, ItalyHQ checked Sep 21, 2026	51-200	62 contacts →
	Indirect evidence “Entra nel mondo di Gesco SpA e scopri con noi come costruire un futuro sostenibile.” Source: RevenueBase Database · checked Sep 21, 2026
10	Energy Italy	Partial evidence	Costermano Sul Garda, ItalyHQ checked Sep 21, 2026	11-50	59 contacts →
	Partial 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 21, 2026
11	Enerqos	Partial evidence	Milano, ItalyHQ checked Sep 21, 2026	11-50	57 contacts →
	Partial 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 21, 2026
12	Azzeroco2	Indirect evidence	Rome, ItalyHQ checked Sep 21, 2026	11-50	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 21, 2026
13	Samso SPA	Strong evidence	Milano, ItalyHQ checked Sep 21, 2026	11-50	42 contacts →
	Strong 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 21, 2026
14	Divisione Energia Gruppo DE	Indirect evidence	Mira, ItalyHQ checked Sep 21, 2026	51-200	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 21, 2026
15	Xiber Energy Solutions	Partial evidence	Vimodrone, ItalyHQ checked Sep 21, 2026	11-50	35 contacts →
	Partial evidence “XIBER Energy Solutions is TESYA Group's in-house startup, established to support industrial customers in decarbonizing their activities.” Source: RevenueBase Database · checked Sep 21, 2026
16	Cogenio	Strong evidence	Roma, ItalyHQ checked Sep 21, 2026	n/a	31 contacts →
	Strong 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 21, 2026
17	Exergia S.P.A	Partial evidence	Gallarate, ItalyHQ checked Sep 21, 2026	51-200	30 contacts →
	Partial evidence “Dal 2002 Exergia soddisfa qualunque esigenza sotto il profilo energetico, studia strategie dedicate ad ogni specificità e dimensione dell’impresa, garantisce risparmi…” Source: RevenueBase Database · checked Sep 21, 2026
18	Co-Ver Power Technology S.P.A	Indirect evidence	Verbania, ItalyHQ checked Sep 21, 2026	51-200	30 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 21, 2026
19	Enesco SRL	Partial evidence	Treglio, ItalyHQ checked Sep 21, 2026	11-50	29 contacts →
	Partial evidence “Siamo una Energy Service Company costituita da professionisti attivi nel settore delle energie rinnovabili dal 1998, nata per offrire servizi integrati finalizzati alla produzione…” Source: RevenueBase Database · checked Sep 21, 2026
20	Kennew SRL	Partial evidence	Nembro, ItalyHQ checked Sep 21, 2026	51-200	29 contacts →
	Partial evidence “Dal 2008 aiutiamo persone e imprese a risparmiare energia e a vivere in modo più sostenibile.” Source: RevenueBase Database · checked Sep 21, 2026
21	Enertech Solution	Strong evidence	Milano, ItalyHQ checked Sep 21, 2026	11-50	28 contacts →
	Strong evidence “Siamo un’innovativa società di ingegneria specializzata nel settore dell’energia e dell’efficienza energetica.” Source: RevenueBase Database · checked Sep 21, 2026
22	IES Solare S.R.L	Strong evidence	Livorno, ItalyHQ checked Sep 21, 2026	51-200	28 contacts →
	Strong evidence “Ies Solare srl vanta 20 anni di esperienza nel campo delle energie rinnovabili e risparmio energetico, proponendo soluzioni innovative e tecnologiche per l’efficientamento…” Source: RevenueBase Database · checked Sep 21, 2026
23	Prime Green Solutions Benefit	Partial evidence	Milano, ItalyHQ checked Sep 21, 2026	51-200	27 contacts →
	Partial evidence “Prime Green Solutions è la società del gruppo RINA Prime dedicata alla riqualificazione energetica e alla trasformazione sostenibile del patrimonio immobiliare, attraverso modelli…” Source: RevenueBase Database · checked Sep 21, 2026
24	Energy Saving SPA	Partial evidence	Monza, ItalyHQ checked Sep 21, 2026	11-50	26 contacts →
	Partial evidence “Saving Energy Spa is a well know independent energy consultancy company” Source: RevenueBase Database · checked Sep 21, 2026
25	Arcoservizi S.P.A	Partial evidence	Torino, ItalyHQ checked Sep 21, 2026	51-200	26 contacts →
	Partial evidence “Siamo uno dei principali competitor nel mercato dei servizi energetici, con una forte attitudine all’innovazione tecnologica, alla riqualificazione dei servizi, al risparmio…” Source: RevenueBase Database · checked Sep 21, 2026

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: energy efficiency as a service 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 energy efficiency as a service companies.
Partial evidence: Its own public description names part of energy efficiency as a service companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name energy efficiency as a service 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 629 energy efficiency as a service companies based in Italy

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Energy efficiency as a service companies based in Italy at a glance

As of Sep 21, 2026

27.0%Verified-email coverage

12.8Average contacts per company

1-10Median size (employees)

4.8%Largest-city concentration · Milano

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

344

11-50

226

51-200

201-500

501-1,000

1,001-5,000

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 629 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 energy efficiency as a service 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 “energy efficiency as a service 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 energy efficiency as a service 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 energy efficiency as a service 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, 2,185 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 21, 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.

Energy efficiency as a service companies by metro

Energy efficiency as a service companies in Milano30

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 energy efficiency as a service 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 energy efficiency as a service companies are there based in Italy?

RevenueBase identified 629 energy efficiency as a service 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?

Enegan, headquartered in Vinci, tops this list with the largest team on record.

Which city has the most energy efficiency as a service companies?

Milano leads with 30 headquartered companies, followed by Roma (24) and Milan (20).

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 2,185 verified decision-maker contacts tracked across these 629 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 21, 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.