Company lists · Data refreshed September 2026

Top 25 Building energy optimization companies based in Italy

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

Compiled by the RevenueBase Data Team Data refreshed Sep 16, 2026 856 companies tracked

RevenueBase identified 856 building energy optimization companies headquartered in Italy as of September 2026 and tracks 7,022 professional contacts across them, including 1,877 with verified work emails. Milano is the largest hub.

This list covers building energy optimization 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 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 16, 2026 86% judged on-target in blind review

856Companies

7,022Contacts tracked

1,877Verified emails

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The 25 largest building energy optimization companies based in Italy

Ranked by team size

Top 25 of 856 building energy optimization companies based in Italy, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to building energy optimization 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	Renovit	Partial evidence	Milano, ItalyHQ checked Sep 16, 2026	201-500	255 contacts →
	Partial evidence “Renovit Società Benefit è un primario operatore nel mercato dell’efficienza energetica, nato da un'iniziativa di Snam e CDP Equity.” Source: RevenueBase Database · checked Sep 16, 2026
2	Geoside	Partial evidence	Casalecchio Di Reno, ItalyHQ checked Sep 16, 2026	51-200	140 contacts →
	Partial 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 16, 2026
3	Teicosgroup	Partial evidence	Milano, ItalyHQ checked Sep 16, 2026	51-200	87 contacts →
	Partial 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, 2026
4	Energy Team S.P.A	Partial evidence	Trezzano Sul Naviglio, ItalyHQ checked Sep 16, 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 16, 2026
5	Sauter Italia	Partial evidence	Sesto San Giovanni, ItalyHQ checked Sep 16, 2026	51-200	78 contacts →
	Partial evidence “Benvenuti in SAUTER Italia S.pA, vostra partner per il building management e l’automazione degli ambienti.” Source: RevenueBase Database · checked Sep 16, 2026
6	A3sprogetti	Partial evidence	Pescara, ItalyHQ checked Sep 16, 2026	11-50	78 contacts →
	Partial evidence “servizi di progettazione integrata, risparmio energetico, analisi energetiche finalizzate all'energy saving impianti termici impianti elettrici energie alternative.” Source: RevenueBase Database · checked Sep 16, 2026
7	Lenergy SPA	Partial evidence	Fornacette, ItalyHQ checked Sep 16, 2026	51-200	68 contacts →
	Partial evidence “In Lenergy, acceleriamo la transizione verso l'indipendenza energetica per famiglie e imprese.” Source: RevenueBase Database · checked Sep 16, 2026
8	Unoenergy Green Solutions SPA	Indirect evidence	Cascina, ItalyHQ checked Sep 16, 2026	201-500	63 contacts →
	Indirect 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 16, 2026
9	Cristoforetti Servizi Energia S.P.A	Partial evidence	Lavis, ItalyHQ checked Sep 16, 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 16, 2026
10	Gesco SPA	Indirect evidence	Monteriggioni, ItalyHQ checked Sep 16, 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 16, 2026
11	Saccir S.P.A	Partial evidence	Roma, ItalyHQ checked Sep 16, 2026	201-500	61 contacts →
	Partial evidence “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.” Source: RevenueBase Database · checked Sep 16, 2026
12	Energy Italy	Partial evidence	Costermano Sul Garda, ItalyHQ checked Sep 16, 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 16, 2026
13	Euclide	Indirect evidence	Torino, ItalyHQ checked Sep 16, 2026	51-200	57 contacts →
	Indirect evidence “EUCLIDE was founded in Turin in 2007 as a synthesis of the professional skills gained by the Founding Partners in their previous work experiences.” Source: RevenueBase Database · checked Sep 16, 2026
14	Unica S.P.A	Indirect evidence	Napoli, ItalyHQ checked Sep 16, 2026	51-200	54 contacts →
	Indirect evidence “Fondata nel 2014, Unica S.p.A.” Source: RevenueBase Database · checked Sep 16, 2026
15	Azzeroco2	Indirect evidence	Rome, ItalyHQ checked Sep 16, 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 16, 2026
16	Paradigma Italia Società Benefit	Partial evidence	Calcinato, ItalyHQ checked Sep 16, 2026	11-50	44 contacts →
	Partial evidence “Paradigma Italia: Sistemi di Climatizzazione Ecologici Paradigma è un'azienda che si basa sulla filosofia della qualità, dell'uso di energie rinnovabili e della semplificazione.” Source: RevenueBase Database · checked Sep 16, 2026
17	Samso SPA	Partial evidence	Milano, ItalyHQ checked Sep 16, 2026	11-50	42 contacts →
	Partial 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 16, 2026
18	Italsoft Group	Indirect evidence	Stanghella (pd), ItalyHQ checked Sep 16, 2026	11-50	41 contacts →
	Indirect evidence “Mettiamo le nuove tecnologie a servizio delle persone, per migliorare quei luoghi chiamati casa e disegnare la vita all’interno di quei luoghi.” Source: RevenueBase Database · checked Sep 16, 2026
19	Espiù S.R.L. Società Benefit	Partial evidence	Oderzo, ItalyHQ checked Sep 16, 2026	51-200	38 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 16, 2026
20	Divisione Energia Gruppo DE	Indirect evidence	Mira, ItalyHQ checked Sep 16, 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 16, 2026
21	Enerbrain	Strong evidence	Turin, ItalyHQ checked Sep 16, 2026	11-50	38 contacts →
	Strong evidence “Founded in 2015 within the Innovative Enterprises business incubator of the Politecnico di Torino, Enerbrain has developed energy retrofit solutions for large buildings that allow…” Source: RevenueBase Database · checked Sep 16, 2026
22	Solarplay	Partial evidence	Lissone, ItalyHQ checked Sep 16, 2026	51-200	35 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 16, 2026
23	Sunsolution SRL	Partial evidence	Fontevivo, ItalyHQ checked Sep 16, 2026	11-50	33 contacts →
	Partial evidence “Siamo il partner strategico per aziende, ESCo e IPP che ricercano soluzioni energetiche bancabili, performanti e orientate alla generazione di valore nel tempo.” Source: RevenueBase Database · checked Sep 16, 2026
24	Cogenio	Partial evidence	Roma, ItalyHQ checked Sep 16, 2026	n/a	31 contacts →
	Partial 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 16, 2026
25	Co-Ver Power Technology S.P.A	Indirect evidence	Verbania, ItalyHQ checked Sep 16, 2026	51-200	30 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 16, 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: building energy optimization 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 building energy optimization companies.
Partial evidence: Its own public description names part of building energy optimization companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name building energy optimization 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 856 building energy optimization companies based in Italy

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Building energy optimization companies based in Italy at a glance

As of Sep 16, 2026

26.7%Verified-email coverage

8.2Average contacts per company

1-10Median size (employees)

4.3%Largest-city concentration · Milano

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

482

11-50

292

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 856 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 building energy optimization 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 “building energy optimization 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 building energy optimization 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 building energy optimization 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, 1,877 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.

Building energy optimization companies by metro

Building energy optimization companies in Milano37
Building energy optimization companies in Roma37
Building energy optimization companies in Milan26

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 building energy optimization 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 building energy optimization companies are there based in Italy?

RevenueBase identified 856 building energy optimization 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?

Renovit, headquartered in Milano, tops this list with the largest team on record.

Which city has the most building energy optimization companies?

Milano leads with 37 headquartered companies, followed by Roma (37) and Milan (26).

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 1,877 verified decision-maker contacts tracked across these 856 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.