Company lists · Data refreshed October 2026

Top 25 Energy efficiency optimization companies based in Italy

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

Compiled by the RevenueBase Data Team Data refreshed Oct 12, 2026 1,133 companies tracked

RevenueBase identified 1,133 company matches for energy efficiency optimization companies associated with Italy as of October 2026 and tracks 7,830 professional contacts across them, including 2,521 with verified work emails. Milan is the largest hub.

This list covers company matches for energy efficiency optimization companies 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 October 12, 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 Oct 12, 2026 How this list was built

1,133Companies

7,830Contacts tracked

2,521Verified emails

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The 25 largest energy efficiency optimization companies based in Italy

Ranked by team size

Top 25 of 1,133 company matches for energy efficiency optimization companies based in Italy, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 12, 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Seingim	Exact match	Ceggia, ItalyHQ recorded Oct 12, 2026	501-1,000	405 contacts →
	Exact match “SEINGIM began its activities more than 30 years ago in Venice.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
2	Deerns Italia	Exact match	Milan, ItalyHQ recorded Oct 12, 2026	501-1,000	144 contacts →
	Exact match “DEERNS è una società di consulenza internazionale in grado di fornire servizi di ingegneria per l’ambiente costruito con un approccio integrato e completo.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
3	Geoside	Exact match	Casalecchio Di Reno, ItalyHQ recorded Oct 12, 2026	51-200	141 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
4	Tekne SPA	Exact match	Milan, ItalyHQ recorded Oct 12, 2026	51-200	127 contacts →
	Exact match “Tekne S.p.A.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
5	Greenergy	Exact match	Castellaneta, ItalyHQ recorded Oct 12, 2026	51-200	109 contacts →
	Exact match “Non siamo tecnici, ma progettisti consapevoli di essere parte del cambiamento.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
6	Energy Team S.P.A	Exact match	Trezzano Sul Naviglio, ItalyHQ recorded Oct 12, 2026	51-200	86 contacts →
	Exact match “Energy Team è l’operatore italiano leader nel monitoraggio, controllo e gestione del consumo energetico.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
7	Teicosgroup	Exact match	Milan, ItalyHQ recorded Oct 12, 2026	51-200	81 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
8	A3sprogetti	Exact match	Pescara, ItalyHQ recorded Oct 12, 2026	11-50	79 contacts →
	Exact match “servizi di progettazione integrata, risparmio energetico, analisi energetiche finalizzate all'energy saving impianti termici impianti elettrici energie alternative.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
9	Saccir S.P.A	Exact match	Rome, ItalyHQ recorded Oct 12, 2026	201-500	70 contacts →
	Exact match “Nata nel 1938, SACCIR è parte del gruppo SAMOVAR ha accompagnato l’evoluzione dell’energia in Italia, diventando un punto di riferimento nel settore dei multiservizi tecnologici.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
10	Clever Servizi Energetici S.P.A	Exact match	Rivoli, ItalyHQ recorded Oct 12, 2026	51-200	64 contacts →
	Exact match “Comat Servizi Energetici S.p.A.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
11	Gesco SPA	Exact match	Monteriggioni, ItalyHQ recorded Oct 12, 2026	51-200	63 contacts →
	Exact match “Entra nel mondo di Gesco SpA e scopri con noi come costruire un futuro sostenibile.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
12	Unoenergy Green Solutions SPA	Exact match	Cascina, ItalyHQ recorded Oct 12, 2026	201-500	60 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
13	Euclide	Exact match	Turin, ItalyHQ recorded Oct 12, 2026	51-200	55 contacts →
	Exact match “EUCLIDE was founded in Turin in 2007 as a synthesis of the professional skills gained by the Founding Partners in their previous work experiences.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
14	Energy Italy	Exact match	Costermano Sul Garda, ItalyHQ recorded Oct 12, 2026	11-50	55 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
15	LESS	Exact match	Turin, ItalyHQ recorded Oct 12, 2026	201-500	53 contacts →
	Exact match “LESS è una società di progettazione ingegneristica, architettonica e di servizi tecnici professionali, una realtà affermata che offre un’ampia gamma di servizi smart e ad alto…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
16	Open Project	Exact match	Bologna, ItalyHQ recorded Oct 12, 2026	11-50	50 contacts →
	Exact match “Open Project S.r.l.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
17	Energy Wave	Exact match	Alessandria, ItalyHQ recorded Oct 12, 2026	11-50	44 contacts →
	Exact match “è una società che opera nel settore energetico.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
18	Quality Engineering SRL	Exact match	Pescara, ItalyHQ recorded Oct 12, 2026	11-50	42 contacts →
	Exact match “QE Srl is a technology driven multi disciplinary engineering company and an innovation step ahead.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
19	Samso SPA	Exact match	Milan, ItalyHQ recorded Oct 12, 2026	11-50	39 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
20	Dquadro	Exact match	Cuneo, ItalyHQ recorded Oct 12, 2026	11-50	36 contacts →
	Exact match “dquadro nasce dall’unione delle competenze di più figure professionali con ampie esperienze lavorative oltre che in Italia anche all’estero.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
21	Solarplay	Exact match	Lissone, ItalyHQ recorded Oct 12, 2026	51-200	36 contacts →
	Exact match “Diffondere la cultura dell’autonomia energetica in Italia e nel mondo, rendendo le tecnologie sempre più accessibili a tutti, per case e aziende sempre più ecosostenibili è la…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
22	Espiù S.R.L. Società Benefit	Exact match	Oderzo, ItalyHQ recorded Oct 12, 2026	51-200	35 contacts →
	Exact match “EsPiù S.r.l.\| Società Benefit è una Società di Ingegneria, operante nell'ambito della progettazione e consulenza energetica in particolar modo ad industrie, settore terziario…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
23	Divisione Energia Gruppo DE	Exact match	Mira, ItalyHQ recorded Oct 12, 2026	51-200	34 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
24	Solis S.P.A	Exact match	Casoli, ItalyHQ recorded Oct 12, 2026	51-200	33 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
25	Enesco SRL	Exact match	Treglio, ItalyHQ recorded Oct 12, 2026	11-50	32 contacts →
	Exact match “Siamo una Energy Service Company costituita da professionisti attivi nel settore delle energie rinnovabili dal 1998, nata per offrire servizi integrati finalizzati alla produzione…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “energy efficiency optimization companies”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 1,133 energy efficiency optimization companies based in Italy

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Energy efficiency optimization companies based in Italy at a glance

As of Oct 12, 2026

32.2%Verified-email coverage

6.9Average contacts per company

1-10Median size (employees)

7.1%Largest-city concentration · Milan

Oct 12, 2026Page data refreshed

Companies by employee count

1-10

701

11-50

360

51-200

201-500

501-1,000

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 1,133 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 efficiency optimization companies” 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 2,521 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 October 12, 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.

Energy efficiency optimization companies by metro

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 efficiency optimization companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many energy efficiency optimization companies are there based in Italy?

RevenueBase identified 1,133 company matches for energy efficiency optimization companies associated with Italy as of October 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?

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

Which city has the most energy efficiency optimization companies?

Milan leads with 81 company records, followed by Rome (73) and Turin (43).

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 2,521 professional contacts with verified work emails tracked across these 1,133 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 October 12, 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.