Company lists · Data refreshed September 2026
Top 24 Energy efficiency services companies based in Milano, Italy
RevenueBase identified 39 energy efficiency services companies headquartered in Milano, Italy as of September 2026 and tracks 1,429 professional contacts across them, including 404 with verified work emails. Milano is the largest hub.
This list covers energy efficiency services companies headquartered in Milano, 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 16, 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 24 largest energy efficiency services companies based in Milano, Italy
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 512 contacts → | ||||
Strong evidence “Efficienza energetica e mobilità elettrica per le PMI.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 2 | 87 contacts → | ||||
Indirect evidence “Our organization has a special attitude with the application of innovative solutions and procedures with a value-based approach in building process and in site management.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 3 | 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 16, 2026Thanks. The Data Team will review it. | |||||
| 4 | 44 contacts → | ||||
Partial 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 16, 2026Thanks. The Data Team will review it. | |||||
| 5 | 28 contacts → | ||||
Strong evidence “Siamo un’innovativa società di ingegneria specializzata nel settore dell’energia e dell’efficienza energetica.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 6 | 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 16, 2026Thanks. The Data Team will review it. | |||||
| 7 | 23 contacts → | ||||
Strong evidence “L’impegno quotidiano di Unoenergy innovative Solutions è la rilevazione, l’analisi dei consumi energetici e la gestione dell’energia per ottenere efficienza e risparmio avendo…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 8 | 23 contacts → | ||||
Partial evidence “HF S.r.l nasce nel 2012 su iniziativa di due imprenditori che lavorano da anni nel settore dell’energia, della consulenza immobiliare e degli impianti.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 9 | 21 contacts → | ||||
Indirect evidence “La Tecnoenergy Service s.r.l.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 10 | 20 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 11 | 16 contacts → | ||||
Strong evidence “ASSOESCo, the Association of Italian Energy Service Companies, was founded in 2005 with the aim to boost the energy efficiency market by bringing together Energy Service…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 12 | 13 contacts → | ||||
Strong evidence “TEKNE ESCo, is a certified (UNI CEI 11352 and ISO 9001:2015) Energy Service Company, which supports and finance the customer throughout the energy efficiency process in building…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 13 | 10 contacts → | ||||
Partial evidence “Rete Irene “il Rinnovamento Energetico Negli Edifici” è un network di aziende che promuove e realizza interventi di Riqualificazione Energetica integrata involucro-impianti…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 14 | 10 contacts → | ||||
Partial evidence “Power Ventures è nata nel 2008 e rappresenta l'iniziativa nell'ambito della produzione di energia pulita di "Iniziative Macchi", una serie di attività industriali riferibili alla…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 15 | 8 contacts → | ||||
Partial evidence “GKSD esco is a GKSD operating company that provides business services to the energy sector.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 16 | 8 contacts → | ||||
Partial evidence “Gestione integrata ed efficientamento operativo, oltre che attività di ricerca, progettazione, management, finanziamento, installazione, e manutenzione.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 17 | 7 contacts → | ||||
Strong evidence “save NRG was born in 2015, offering tailor-made services in the following expertise areas: • Energy Efficiency, Smart Energy and Renewable Energy • BioLiving, BioArchitecture and…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 18 | 7 contacts → | ||||
Strong evidence “Soeng, la vostra guida privilegiata verso un futuro energetico più efficiente e sostenibile.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 19 | 6 contacts → | ||||
Partial evidence “Siamo presenti sul mercato dell’energia dal 2004 e dal 2012 siamo una Energy Service Company (ESCo) certificata secondo la norma UNI-CEI 11352.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 20 | 6 contacts → | ||||
Partial evidence “Joule è una società attiva nei servizi energetici integrati.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 21 | 4 contacts → | ||||
Partial evidence “Supportiamo PMI, grandi imprese ed energy manager nella gestione strategica dell’energia, in contesti caratterizzati da consumi rilevanti e complessità decisionale.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 22 | 3 contacts → | ||||
Partial evidence “Consultec Energia identifica le opportunità di ottimizzazione dei consumi e costi energetici in contesti industriali, terziari, tra cui GDO e realtà sanitarie private, e nella…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 23 | 2 contacts → | ||||
Indirect evidence “Eleev è una società di ingegneria specializzata nel miglioramento delle prestazioni degli edifici.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 24 | 2 contacts → | ||||
Partial evidence “3EN Project is an ESCo with EGE certified SECEM and engineering company specialized in flue gas treatment and energy analysis for industrial sector.” Source: RevenueBase Database · checked Sep 16, 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: energy efficiency services 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 services companies.
- Partial evidence
- Its own public description names part of energy efficiency services 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 services 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 24 of 39 energy efficiency services companies based in Milano, Italy
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Energy efficiency services companies based in Milano, Italy at a glance
As of Sep 16, 2026Companies by employee count
Email recency for this list is measured across the whole Italy list rather than for Milano, so it is reported there. Company counts and contact totals on this page are exact for Milano, over 39 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 services 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 Milano, Italy whose own description of what they do matches “energy efficiency services 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 services 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 services companies, and records with no verified work email. Companies headquartered outside Milano 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, 404 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 16, 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 services companies by metro in Italy
- Energy efficiency services companies in Milano39
- Energy efficiency services companies in Roma38
- Energy efficiency services companies in Torino29
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 services 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 services companies are there based in Milano, Italy?
RevenueBase identified 39 energy efficiency services companies headquartered in Milano, 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?
Repower Italia, headquartered in Milano, tops this list with the largest team on record.
Which city has the most energy efficiency services companies?
Milano leads with 39 headquartered companies, followed by Roma (38) and Torino (29).
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 404 verified decision-maker contacts tracked across these 39 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 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 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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