Company lists · Data refreshed September 2026

Top 25 Residential renewable energy installers based in Italy

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

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 798 companies tracked

RevenueBase identified 798 residential renewable energy installers headquartered in Italy as of September 2026 and tracks 5,708 professional contacts across them, including 1,313 with verified work emails. Roma is the largest hub.

This list covers residential renewable energy installers 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 17, 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 17, 2026 86% judged on-target in blind review

798Companies

5,708Contacts tracked

1,313Verified emails

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The 25 largest residential renewable energy installers based in Italy

Ranked by team size

Top 25 of 798 residential renewable energy installers based in Italy, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to residential renewable energy installers: 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	Dolomiti Energia	Indirect evidence	Rovereto, ItalyHQ checked Sep 17, 2026	1,001-5,000	369 contacts →
	Indirect evidence “Rinnovabili.” Source: RevenueBase Database · checked Sep 17, 2026
2	STE Energy	Partial evidence	Padova, ItalyHQ checked Sep 17, 2026	51-200	194 contacts →
	Partial evidence “Since June 2025, STE Energy has been acquired by, becoming part of the world.” Source: RevenueBase Database · checked Sep 17, 2026
3	Espe S.P.A	Indirect evidence	Grantorto, ItalyHQ checked Sep 17, 2026	51-200	144 contacts →
	Indirect evidence “Know-how, experience, reliability, innovation.” Source: RevenueBase Database · checked Sep 17, 2026
4	Algowatt	Strong evidence	Milano, ItalyHQ checked Sep 17, 2026	n/a	137 contacts →
	Strong evidence “TerniEnergia is active in the energies from renewable sources business, particularly in the photovoltaic segment, where it operates as a system integrator.” Source: RevenueBase Database · checked Sep 17, 2026
5	Siel S.P.A	Indirect evidence	Trezzano Rosa, ItalyHQ checked Sep 17, 2026	51-200	100 contacts →
	Indirect evidence “In its current structure, Siel Group is a holding company deeply rooted in a world-class economic, technological, and cultural context.” Source: RevenueBase Database · checked Sep 17, 2026
6	Senec Italia	Partial evidence	Bari, ItalyHQ checked Sep 17, 2026	51-200	94 contacts →
	Partial evidence “Nata nel 2009 a Lipsia (Germania), SENEC sviluppa e produce sistemi d’accumulo intelligenti ed offre una gamma completa di prodotti e servizi per l’autosufficienza energetica.” Source: RevenueBase Database · checked Sep 17, 2026
7	PEF SPA	Partial evidence	Barberino Tavarnelle, ItalyHQ checked Sep 17, 2026	11-50	93 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 17, 2026
8	Lenergy SPA	Partial evidence	Fornacette, ItalyHQ checked Sep 17, 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 17, 2026
9	Unoenergy Green Solutions SPA	Indirect evidence	Cascina, ItalyHQ checked Sep 17, 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 17, 2026
10	Enpal Italia	Partial evidence	Milan, ItalyHQ checked Sep 17, 2026	11-50	62 contacts →
	Partial evidence “Energia pulita accessibile a tutti: questo è il sogno di Enpal.” Source: RevenueBase Database · checked Sep 17, 2026
11	Energy Italy	Partial evidence	Costermano Sul Garda, ItalyHQ checked Sep 17, 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 17, 2026
12	EVA Energie Valsabbia	Partial evidence	Gavardo, ItalyHQ checked Sep 17, 2026	51-200	57 contacts →
	Partial evidence “EVA: il tuo partner per un futuro energetico sostenibile.” Source: RevenueBase Database · checked Sep 17, 2026
13	Braga Group	Partial evidence	Agrate Brianza, ItalyHQ checked Sep 17, 2026	51-200	47 contacts →
	Partial evidence “Braga Group: il tuo partner per la transizione energetica.” Source: RevenueBase Database · checked Sep 17, 2026
14	Energy S.P.A	Partial evidence	Sant'angelo Di Piove Di Sacco, ItalyHQ checked Sep 17, 2026	51-200	44 contacts →
	Partial evidence “Energy was founded in 2013 with a dream: make clean energy accessible to everyone, and at any time of day.” Source: RevenueBase Database · checked Sep 17, 2026
15	Gaia Energy Systems	Partial evidence	Gricignano Di Aversa, ItalyHQ checked Sep 17, 2026	11-50	43 contacts →
	Partial evidence “Gaia Energy Systems opera da anni nei settori delle energie rinnovabili e dell’efficientamento energetico, sia al fianco di aziende che di privati.” Source: RevenueBase Database · checked Sep 17, 2026
16	Lea-Renergy S.R.L	Indirect evidence	Dozza, ItalyHQ checked Sep 17, 2026	51-200	37 contacts →
	Indirect evidence “Siamo un’azienda leader nella progettazione e installazione di impianti fotovoltaici utility scale, ed operiamo su tutto il territorio nazionale sfruttando le tecnologie più…” Source: RevenueBase Database · checked Sep 17, 2026
17	Sonnen Italia	Partial evidence	Curno, ItalyHQ checked Sep 17, 2026	51-200	36 contacts →
	Partial evidence “Disporre di energia pulita e a basso costo per tutti è una delle più grandi sfide del nostro tempo.” Source: RevenueBase Database · checked Sep 17, 2026
18	Valore Solare	Partial evidence	Milan, ItalyHQ checked Sep 17, 2026	51-200	31 contacts →
	Partial evidence “Valore Solare: il partner energetico delle aziende italiane Da oltre 14 anni aiutiamo le imprese italiane a cogliere le opportunità offerte dalla transizione energetica.” Source: RevenueBase Database · checked Sep 17, 2026
19	Kennew SRL	Partial evidence	Nembro, ItalyHQ checked Sep 17, 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 17, 2026
20	Lemon Sistemi S.P.A	Indirect evidence	Balestrate, ItalyHQ checked Sep 17, 2026	51-200	29 contacts →
	Indirect evidence “Lemon Sistemi è un'azienda giovane, dinamica e veloce.” Source: RevenueBase Database · checked Sep 17, 2026
21	IES Solare S.R.L	Partial evidence	Livorno, ItalyHQ checked Sep 17, 2026	51-200	28 contacts →
	Partial 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 17, 2026
22	Wölmann	Partial evidence	Lissone, ItalyHQ checked Sep 17, 2026	51-200	28 contacts →
	Partial evidence “In Wölmann crediamo che ci sia un modo più conveniente e pulito per avere energia elettrica in casa o in azienda.” Source: RevenueBase Database · checked Sep 17, 2026
23	Astea Energia	Indirect evidence	Osimo, ItalyHQ checked Sep 17, 2026	51-200	26 contacts →
	Indirect evidence “Non solo Luce e Gas.” Source: RevenueBase Database · checked Sep 17, 2026
24	BE ONE S.P.A	Partial evidence	Lucca, ItalyHQ checked Sep 17, 2026	11-50	26 contacts →
	Partial evidence “BE ONE PROIETTA IN AVANTI IL CONCETTO DI ENERGIA, OFFRENDOTI UN SERVIZIO CHE UNISCE TECNOLOGIA, RAPPORTO DIRETTO COL CLIENTE ED ESPERIENZA PLURIENNALE NEL SETTORE.” Source: RevenueBase Database · checked Sep 17, 2026
25	Infralab SRL	Strong evidence	Milano, ItalyHQ checked Sep 17, 2026	11-50	25 contacts →
	Strong evidence “InfraLab is a company that integrates skills and experience in the renewable energy sector, gained over more than twenty years.” Source: RevenueBase Database · checked Sep 17, 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: residential renewable energy installers. 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 residential renewable energy installers.
Partial evidence: Its own public description names part of residential renewable energy installers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name residential renewable energy installers. 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 798 residential renewable energy installers based in Italy

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Residential renewable energy installers based in Italy at a glance

As of Sep 17, 2026

23.0%Verified-email coverage

7.2Average contacts per company

1-10Median size (employees)

3.9%Largest-city concentration · Roma

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

431

11-50

285

51-200

201-500

501-1,000

1,001-5,000

10001+

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 798 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 residential renewable energy installers, 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 “residential renewable energy installers”. 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 residential renewable energy installers), 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 residential renewable energy installers, 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, 1,313 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 17, 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.

Residential renewable energy installers by metro

Residential renewable energy installers in Roma31

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 residential renewable energy installers, 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 residential renewable energy installers are there based in Italy?

RevenueBase identified 798 residential renewable energy installers 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?

Dolomiti Energia, headquartered in Rovereto, tops this list with the largest team on record.

Which city has the most residential renewable energy installers?

Roma leads with 31 headquartered companies, followed by Milano (19) and Milan (18).

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 1,313 verified decision-maker contacts tracked across these 798 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 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 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.