Company lists · Data refreshed September 2026

Top 25 Residential energy efficiency companies based in Italy

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

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 715 companies tracked

RevenueBase identified 715 company matches for residential energy efficiency companies associated with Italy as of September 2026 and tracks 5,638 professional contacts across them, including 1,633 with verified work emails. Milan is the largest hub.

This list covers company matches for residential energy efficiency 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 September 17, 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 Sep 17, 2026 How this list was built

715Companies

5,638Contacts tracked

1,633Verified emails

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The 25 largest residential energy efficiency companies based in Italy

Ranked by team size

Top 25 of 715 company matches for residential energy efficiency companies based in Italy, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 17, 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	Sorgenia	Exact match	Milan, ItalyHQ recorded Sep 17, 2026	201-500	608 contacts →
	Exact match “Da dicembre 2025, abbiamo integrato EF Solare, il primo produttore fotovoltaico italiano.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
2	Unoenergy SPA	Exact match	Milan, ItalyHQ recorded Sep 17, 2026	501-1,000	377 contacts →
	Exact match “Il Gruppo Unoenergy da oltre 20 anni è uno dei primi operatori - a capitale interamente privato - per la fornitura di gas naturale, energia elettrica e servizi di efficientamento…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
3	Geoside	Exact match	Casalecchio Di Reno, ItalyHQ recorded Sep 17, 2026	51-200	140 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 · Sep 17, 2026 · View company records in RevenueBase
4	PEF SPA	Exact match	Barberino Tavarnelle, ItalyHQ recorded Sep 17, 2026	11-50	93 contacts →
	Exact match “PEF SpA nasce a Firenze nel 2006, iniziando ad operare nel settore delle energie rinnovabili, con la commercializzazione su tutto il territorio nazionale di impianti fotovoltaici…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
5	Teicosgroup	Exact match	Milan, ItalyHQ recorded Sep 17, 2026	51-200	87 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 · Sep 17, 2026 · View company records in RevenueBase
6	A3sprogetti	Exact match	Pescara, ItalyHQ recorded Sep 17, 2026	11-50	78 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 · Sep 17, 2026 · View company records in RevenueBase
7	TERMO	Exact match	Milan, ItalyHQ recorded Sep 17, 2026	51-200	74 contacts →
	Exact match “Italy’s #1 platform for sustainable home solutions - We partner with financial institutions, sustainable home improvement professionals and manufacturers to make sustainable home…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
8	Energy Italy	Exact match	Costermano Sul Garda, ItalyHQ recorded Sep 17, 2026	11-50	59 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 · Sep 17, 2026 · View company records in RevenueBase
9	Braga Group	Exact match	Agrate Brianza, ItalyHQ recorded Sep 17, 2026	51-200	47 contacts →
	Exact match “Braga Group: il tuo partner per la transizione energetica.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
10	Gaia Energy Systems	Exact match	Gricignano Di Aversa, ItalyHQ recorded Sep 17, 2026	11-50	43 contacts →
	Exact match “Gaia Energy Systems opera da anni nei settori delle energie rinnovabili e dell’efficientamento energetico, sia al fianco di aziende che di privati.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
11	Samso SPA	Exact match	Milan, ItalyHQ recorded Sep 17, 2026	11-50	42 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 · Sep 17, 2026 · View company records in RevenueBase
12	Agenzia PER L'energia E LO Sviluppo Sostenibile	Exact match	Modena, ItalyHQ recorded Sep 17, 2026	11-50	38 contacts →
	Exact match “La mission di AESS è fornire servizi a imprese, operatori economici e sociali, enti pubblici e di diritto privato e altre associazioni relativi a: – miglioramento dell’efficienza…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
13	Solarplay	Exact match	Lissone, ItalyHQ recorded Sep 17, 2026	51-200	35 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 · Sep 17, 2026 · View company records in RevenueBase
14	Cogenio	Exact match	Rome, ItalyHQ recorded Sep 17, 2026	n/a	31 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
15	Enesco SRL	Exact match	Treglio, ItalyHQ recorded Sep 17, 2026	11-50	29 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 · Sep 17, 2026 · View company records in RevenueBase
16	Kennew SRL	Exact match	Nembro, ItalyHQ recorded Sep 17, 2026	51-200	29 contacts →
	Exact match “Dal 2008 aiutiamo persone e imprese a risparmiare energia e a vivere in modo più sostenibile.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
17	Lemon Sistemi S.P.A	Exact match	Balestrate, ItalyHQ recorded Sep 17, 2026	51-200	29 contacts →
	Exact match “Lemon Sistemi è un'azienda giovane, dinamica e veloce.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
18	Enertech Solution	Exact match	Milan, ItalyHQ recorded Sep 17, 2026	11-50	28 contacts →
	Exact match “Siamo un’innovativa società di ingegneria specializzata nel settore dell’energia e dell’efficienza energetica.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
19	IES Solare S.R.L	Exact match	Livorno, ItalyHQ recorded Sep 17, 2026	51-200	28 contacts →
	Exact match “Ies Solare srl vanta 20 anni di esperienza nel campo delle energie rinnovabili e risparmio energetico, proponendo soluzioni innovative e tecnologiche per l’efficientamento…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
20	Wölmann	Exact match	Lissone, ItalyHQ recorded Sep 17, 2026	51-200	28 contacts →
	Exact match “In Wölmann crediamo che ci sia un modo più conveniente e pulito per avere energia elettrica in casa o in azienda.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
21	Energy Saving SPA	Exact match	Monza, ItalyHQ recorded Sep 17, 2026	11-50	26 contacts →
	Exact match “Saving Energy Spa is a well know independent energy consultancy company” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
22	Arcoservizi S.P.A	Exact match	Turin, ItalyHQ recorded Sep 17, 2026	51-200	26 contacts →
	Exact match “Siamo uno dei principali competitor nel mercato dei servizi energetici, con una forte attitudine all’innovazione tecnologica, alla riqualificazione dei servizi, al risparmio…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
23	Astea Energia	Exact match	Osimo, ItalyHQ recorded Sep 17, 2026	51-200	26 contacts →
	Exact match “Non solo Luce e Gas.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
24	BE ONE S.P.A	Exact match	Lucca, ItalyHQ recorded Sep 17, 2026	11-50	26 contacts →
	Exact match “BE ONE PROIETTA IN AVANTI IL CONCETTO DI ENERGIA, OFFRENDOTI UN SERVIZIO CHE UNISCE TECNOLOGIA, RAPPORTO DIRETTO COL CLIENTE ED ESPERIENZA PLURIENNALE NEL SETTORE.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
25	Progettozero	Exact match	Bologna, ItalyHQ recorded Sep 17, 2026	11-50	25 contacts →
	Exact match “Gruppo Energetica nasce nel 2018 dall’esperienza e dalla volontà di un gruppo di professionisti, che già da diversi anni lavorano nel settore, di far comprendere tutti i benefici…” Recorded in the RevenueBase company graph · Sep 17, 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 “residential energy efficiency 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 715 residential energy efficiency companies based in Italy

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Residential energy efficiency companies based in Italy at a glance

As of Sep 17, 2026

29.0%Verified-email coverage

7.9Average contacts per company

1-10Median size (employees)

7.1%Largest-city concentration · Milan

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

401

11-50

254

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 715 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 “residential energy efficiency 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 1,633 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 September 17, 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.

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

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

RevenueBase identified 715 company matches for residential energy efficiency companies associated with Italy as of September 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?

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

Which city has the most residential energy efficiency companies?

Milan leads with 51 company records, followed by Rome (44) and Turin (21).

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 1,633 professional contacts with verified work emails tracked across these 715 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 September 17, 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.