Company lists · Data refreshed September 2026

Top 25 Solar water heater installation companies based in Italy

Name: Solar water heater installation companies based in Italy
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 18, 2026 579 companies tracked

RevenueBase identified 579 solar water heater installation companies headquartered in Italy as of September 2026 and tracks 2,726 professional contacts across them, including 395 with verified work emails. Roma is the largest hub.

This list covers solar water heater installation 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 18, 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 18, 2026 86% judged on-target in blind review

579Companies

2,726Contacts tracked

395Verified emails

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The 25 largest solar water heater installation companies based in Italy

Ranked by team size

Top 25 of 579 solar water heater installation companies based in Italy, ranked by team size, largest first. Data refreshed Sep 18, 2026. RevenueBase Smart Search rates how each company's information relates to solar water heater installation 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	Unoenergy Green Solutions SPA	Indirect evidence	Cascina, ItalyHQ checked Sep 18, 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 18, 2026
2	Energy Italy	Indirect evidence	Costermano Sul Garda, ItalyHQ checked Sep 18, 2026	11-50	59 contacts →
	Indirect 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 18, 2026
3	Gaia Energy Systems	Indirect evidence	Gricignano Di Aversa, ItalyHQ checked Sep 18, 2026	11-50	43 contacts →
	Indirect 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 18, 2026
4	Pleion	Indirect evidence	Cerea, ItalyHQ checked Sep 18, 2026	11-50	31 contacts →
	Indirect evidence “Punto di riferimento del Solare Termico italiano proponendo le soluzioni solari più innovative, un servizio di eccellenza e una presenza capillare in tutta Italia.” Source: RevenueBase Database · checked Sep 18, 2026
5	Kennew SRL	Indirect evidence	Nembro, ItalyHQ checked Sep 18, 2026	51-200	29 contacts →
	Indirect evidence “Dal 2008 aiutiamo persone e imprese a risparmiare energia e a vivere in modo più sostenibile.” Source: RevenueBase Database · checked Sep 18, 2026
6	Lemon Sistemi S.P.A	Indirect evidence	Balestrate, ItalyHQ checked Sep 18, 2026	51-200	29 contacts →
	Indirect evidence “Lemon Sistemi è un'azienda giovane, dinamica e veloce.” Source: RevenueBase Database · checked Sep 18, 2026
7	ECO The Photovoltaic Group	Indirect evidence	Cremona, ItalyHQ checked Sep 18, 2026	51-200	28 contacts →
	Indirect evidence “Progettazione, realizzazione e supporto nel tempo.” Source: RevenueBase Database · checked Sep 18, 2026
8	IES Solare S.R.L	Indirect evidence	Livorno, ItalyHQ checked Sep 18, 2026	51-200	28 contacts →
	Indirect 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 18, 2026
9	Wölmann	Indirect evidence	Lissone, ItalyHQ checked Sep 18, 2026	51-200	28 contacts →
	Indirect 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 18, 2026
10	Nalon SRL	Indirect evidence	Oriago Di Mira, ItalyHQ checked Sep 18, 2026	11-50	26 contacts →
	Indirect evidence “Company profile: Our company, founded in 1989, with twenty years of experience, is capable of guiding its Customers from the design stage up to operational phase, creating systems…” Source: RevenueBase Database · checked Sep 18, 2026
11	BE ONE S.P.A	Indirect evidence	Lucca, ItalyHQ checked Sep 18, 2026	11-50	26 contacts →
	Indirect 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 18, 2026
12	Greensun SRL	Indirect evidence	Bagnolo In Piano, ItalyHQ checked Sep 18, 2026	11-50	22 contacts →
	Indirect evidence “Greensun srl ha iniziato la sua attivita’ nel 2008, come impresa distributrice di materiali per gli impianti nel settore delle energie rinnovabili e risparmio energetico in…” Source: RevenueBase Database · checked Sep 18, 2026
13	Asset Solare SRL	Indirect evidence	Modena, ItalyHQ checked Sep 18, 2026	11-50	22 contacts →
	Indirect evidence “Asset Solare nasce allo scopo di rendere l'energia solare una possibilità concreta, facilmente raggiungibile, in grado di generare un risparmio economico significativo per il…” Source: RevenueBase Database · checked Sep 18, 2026
14	Enpower S.R.L	Indirect evidence	Bedizzole, ItalyHQ checked Sep 18, 2026	51-200	22 contacts →
	Indirect evidence “Realizzazione di impianti elettrici, idraulici e fotovoltaici” Source: RevenueBase Database · checked Sep 18, 2026
15	Essesolar	Indirect evidence	Gallarate, ItalyHQ checked Sep 18, 2026	11-50	20 contacts →
	Indirect evidence “EsseSolar si occupa della progettazione e realizzazione di impianti fotovoltaici chiavi in mano e sistemi integrati con pompe di calore per abitazioni e aziende.” Source: RevenueBase Database · checked Sep 18, 2026
16	Ecotecno Group S.R.L	Indirect evidence	Casoria, ItalyHQ checked Sep 18, 2026	11-50	19 contacts →
	Indirect evidence “ECOTECNO GROUP, azienda leader nella promozione, distribuzione e installazione di sistemi e tecnologie di alta qualità per l'utilizzo dell’energia solare e soluzioni per il…” Source: RevenueBase Database · checked Sep 18, 2026
17	Unosolare	Indirect evidence	Montecchio Maggiore, ItalyHQ checked Sep 18, 2026	11-50	16 contacts →
	Indirect evidence “Unosolare è il riferimento Unico per il Fotovoltaico.” Source: RevenueBase Database · checked Sep 18, 2026
18	Desamo SRL	Indirect evidence	Padova, ItalyHQ checked Sep 18, 2026	11-50	14 contacts →
	Indirect evidence “Desamo azienda nasce nel 2014 a Padova dall’unione di due professionisti del marketing e della green economy.” Source: RevenueBase Database · checked Sep 18, 2026
19	Sollegno Engineering SRL	Indirect evidence	Trofarello, ItalyHQ checked Sep 18, 2026	1-10	13 contacts →
	Indirect evidence “Sollegno Engineering srl progetta e realizza interventi volti al risparmio energetico e allo sfruttamento delle energie rinnovabili negli edifici, siano essi domestici o…” Source: RevenueBase Database · checked Sep 18, 2026
20	Sarden	Indirect evidence	Selargius, ItalyHQ checked Sep 18, 2026	1-10	13 contacts →
	Indirect evidence “Punto di riferimento in Sardegna, Sarden srl è una società specializzata nel fornire soluzioni per la casa.” Source: RevenueBase Database · checked Sep 18, 2026
21	woltair.it	Indirect evidence	Milan, ItalyHQ checked Sep 18, 2026	11-50	12 contacts →
	Indirect evidence “Siamo il primo marketplace per soluzioni di energia pulita.” Source: RevenueBase Database · checked Sep 18, 2026
22	Energy Cycle	Indirect evidence	Rivoli, ItalyHQ checked Sep 18, 2026	11-50	12 contacts →
	Indirect evidence “Installatore e ESCO nel fotovoltaico dal 2012.” Source: RevenueBase Database · checked Sep 18, 2026
23	Electric SPA	Indirect evidence	Rozzano, ItalyHQ checked Sep 18, 2026	51-200	11 contacts →
	Indirect evidence “Fondata come una piccola azienda di famiglia nel 1976, oggi la società Electric SpA ha ampliato la natura delle sue attività presentandosi sul mercato per la realizzazione di…” Source: RevenueBase Database · checked Sep 18, 2026
24	Prosapio Patrick Service S.R.L	Indirect evidence	Bologna, ItalyHQ checked Sep 18, 2026	51-200	11 contacts →
	Indirect evidence “Ristrutturazioni chiavi in mano, condizionamento e riscaldamento, energie rinnovabili” Source: RevenueBase Database · checked Sep 18, 2026
25	Viola Elettrotecnica	Indirect evidence	Calvagese Della Riviera, ItalyHQ checked Sep 18, 2026	11-50	11 contacts →
	Indirect evidence “Viola Elettrotecnica si occupa di tutte le fasi di progettazione ed installazione di impianti fotovoltaici, li definiamo in base alle tue esigenze e forniamo tutti i componenti…” Source: RevenueBase Database · checked Sep 18, 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: solar water heater installation 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 solar water heater installation companies.
Partial evidence: Its own public description names part of solar water heater installation companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name solar water heater installation 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 579 solar water heater installation companies based in Italy

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Solar water heater installation companies based in Italy at a glance

As of Sep 18, 2026

14.5%Verified-email coverage

4.7Average contacts per company

1-10Median size (employees)

3.5%Largest-city concentration · Roma

Sep 18, 2026Page data refreshed

Companies by employee count

1-10

315

11-50

222

51-200

201-500

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 579 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 solar water heater installation 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 “solar water heater installation 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 solar water heater installation 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 solar water heater installation 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, 395 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 18, 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.

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 solar water heater installation 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 solar water heater installation companies are there based in Italy?

RevenueBase identified 579 solar water heater installation 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?

Unoenergy Green Solutions SPA, headquartered in Cascina, tops this list with the largest team on record.

Which city has the most solar water heater installation companies?

Roma leads with 20 headquartered companies, followed by Torino (14) and Milano (9).

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 395 verified decision-maker contacts tracked across these 579 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 18, 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.