Company lists · Data refreshed September 2026

Top 25 Solar energy contractors based in Italy

Name: Solar energy contractors based in Italy
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 18, 2026 1,288 companies tracked

RevenueBase identified 1,288 solar energy contractors headquartered in Italy as of September 2026 and tracks 8,219 professional contacts across them, including 1,673 with verified work emails. Roma is the largest hub.

This list covers solar energy contractors 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

1,288Companies

8,219Contacts tracked

1,673Verified emails

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The 25 largest solar energy contractors based in Italy

Ranked by team size

Top 25 of 1,288 solar energy contractors 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 energy contractors: 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	Stern Energy	Partial evidence	Parma, ItalyHQ checked Sep 18, 2026	201-500	205 contacts →
	Partial evidence “Stern Energy, founded in 2008, is an Italy-based company specialized in technical services for photovoltaic plants and BESS systems.” Source: RevenueBase Database · checked Sep 18, 2026
2	STE Energy	Partial evidence	Padova, ItalyHQ checked Sep 18, 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 18, 2026
3	Espe S.P.A	Indirect evidence	Grantorto, ItalyHQ checked Sep 18, 2026	51-200	144 contacts →
	Indirect evidence “Know-how, experience, reliability, innovation.” Source: RevenueBase Database · checked Sep 18, 2026
4	Algowatt	Partial evidence	Milano, ItalyHQ checked Sep 18, 2026	n/a	137 contacts →
	Partial 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 18, 2026
5	Esapro	Indirect evidence	Milano, ItalyHQ checked Sep 18, 2026	51-200	98 contacts →
	Indirect evidence “We have more than 10 years’ experience in designing, building and managing renewable power plant and an enviable track record in the maintenance, revamping and 24/7 surveillance…” Source: RevenueBase Database · checked Sep 18, 2026
6	PEF SPA	Partial evidence	Barberino Tavarnelle, ItalyHQ checked Sep 18, 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 18, 2026
7	Sunnerg Group	Strong evidence	Milan, ItalyHQ checked Sep 18, 2026	51-200	69 contacts →
	Strong evidence “WHO WE ARE SUNNERG is General Contractor and Service Provider specializing in "turnkey projects" in the 'Energy & Facility Management B2B market, with a particular focus on the PV…” Source: RevenueBase Database · checked Sep 18, 2026
8	Lenergy SPA	Partial evidence	Fornacette, ItalyHQ checked Sep 18, 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 18, 2026
9	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
10	Saccir S.P.A	Partial evidence	Roma, ItalyHQ checked Sep 18, 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 18, 2026
11	Energy Italy	Partial evidence	Costermano Sul Garda, ItalyHQ checked Sep 18, 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 18, 2026
12	GIN Group	Partial evidence	Milano, ItalyHQ checked Sep 18, 2026	n/a	47 contacts →
	Partial evidence “La GIN GROUP è una società giovane e dinamica, creata da tre professionisti che hanno maturato la loro esperienza nel campo dell’energia alternativa attraverso l’importazione e la…” Source: RevenueBase Database · checked Sep 18, 2026
13	Energy S.P.A	Partial evidence	Sant'angelo Di Piove Di Sacco, ItalyHQ checked Sep 18, 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 18, 2026
14	Sky-Nrg	Partial evidence	Castiglione Delle Stiviere, ItalyHQ checked Sep 18, 2026	51-200	43 contacts →
	Partial evidence “We turn the complexity of the energy transition into reliable, high-performance infrastructure built to last.” Source: RevenueBase Database · checked Sep 18, 2026
15	Oempv S.R.L	Indirect evidence	Rovigo, ItalyHQ checked Sep 18, 2026	51-200	43 contacts →
	Indirect evidence “OEMpv nasce nel 2010 dall’esigenza sempre maggiore di fare manutenzione agli impianti fotovoltaici di media e grande dimensione.” Source: RevenueBase Database · checked Sep 18, 2026
16	Hydroalp	Indirect evidence	Costa Volpino, ItalyHQ checked Sep 18, 2026	51-200	39 contacts →
	Indirect evidence “Founded in 2015, in just a few years Hydroalp has gained a prominent position in the market for the construction of hydroelectric turbines, water-to-wire hydropower plants, green…” Source: RevenueBase Database · checked Sep 18, 2026
17	Forgreen SPA	Partial evidence	Verona, ItalyHQ checked Sep 18, 2026	11-50	37 contacts →
	Partial evidence “ForGreen Group was born by the great experience in renewable energy business and cogeneration system of Multiutility.” Source: RevenueBase Database · checked Sep 18, 2026
18	Lea-Renergy S.R.L	Indirect evidence	Dozza, ItalyHQ checked Sep 18, 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 18, 2026
19	Sunsolution SRL	Partial evidence	Fontevivo, ItalyHQ checked Sep 18, 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 18, 2026
20	GMB Engineering SRL	Indirect evidence	Bregnano, ItalyHQ checked Sep 18, 2026	11-50	33 contacts →
	Indirect evidence “Fondata come GMB Impianti nel 1984, GMB Engineering ha sede oggi a Bregnano (CO) in Via Milano 97, dove è situato il centro dell’unità operativa.” Source: RevenueBase Database · checked Sep 18, 2026
21	Global Sistemi SRL	Indirect evidence	Forlì, ItalyHQ checked Sep 18, 2026	11-50	32 contacts →
	Indirect evidence “Divisione Impianti] La Divisione Impianti di Global Sistemi vanta una lunga esperienza nel campo dell’impiantistica elettrica sia civile che industriale.” Source: RevenueBase Database · checked Sep 18, 2026
22	Aren Electric Power S.P.A	Indirect evidence	Cesena, ItalyHQ checked Sep 18, 2026	11-50	31 contacts →
	Indirect evidence “Attività di consulenza tecnica, di progettazione, direzione lavori, predisposizione e gestione di piani di uso e manutenzione, svolte in forma integrata relativamente ai vari…” Source: RevenueBase Database · checked Sep 18, 2026
23	Wegreenit SPA	Strong evidence	Milan, ItalyHQ checked Sep 18, 2026	51-200	29 contacts →
	Strong evidence “Wegreenit è General Contractor in interventi di efficientamento energetico.” Source: RevenueBase Database · checked Sep 18, 2026
24	Kennew SRL	Partial evidence	Nembro, ItalyHQ checked Sep 18, 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 18, 2026
25	CARGO	Indirect evidence	Potenza, ItalyHQ checked Sep 18, 2026	201-500	29 contacts →
	Indirect evidence “Siamo uno dei principali national player nel settore delle infrastrutture elettriche che da 40 anni si occupa di progettazione, costruzione e manutenzione di elettrodotti per…” 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 energy contractors. 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 energy contractors.
Partial evidence: Its own public description names part of solar energy contractors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name solar energy contractors. 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 1,288 solar energy contractors based in Italy

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Solar energy contractors based in Italy at a glance

As of Sep 18, 2026

20.4%Verified-email coverage

6.4Average contacts per company

1-10Median size (employees)

3.6%Largest-city concentration · Roma

Sep 18, 2026Page data refreshed

Companies by employee count

1-10

677

11-50

499

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 1,288 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 energy contractors, 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 energy contractors”. 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 energy contractors), 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 energy contractors, 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, 1,673 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.

Solar energy contractors by metro

Solar energy contractors in Roma46

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 energy contractors, 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 energy contractors are there based in Italy?

RevenueBase identified 1,288 solar energy contractors 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?

Stern Energy, headquartered in Parma, tops this list with the largest team on record.

Which city has the most solar energy contractors?

Roma leads with 46 headquartered companies, followed by Milan (23) and Milano (20).

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 1,673 verified decision-maker contacts tracked across these 1,288 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.