Company lists · Data refreshed September 2026

Top 25 Renewable energy contractors based in Italy

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

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 1,713 companies tracked

RevenueBase identified 1,713 company matches for renewable energy contractors associated with Italy as of September 2026 and tracks 20,911 professional contacts across them, including 4,985 with verified work emails. Rome is the largest hub.

This list covers company matches for renewable energy contractors 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

1,713Companies

20,911Contacts tracked

4,985Verified emails

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The 25 largest renewable energy contractors based in Italy

Ranked by team size

Top 25 of 1,713 company matches for renewable energy contractors 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	Enel Green Power	Exact match	Rome, ItalyHQ recorded Sep 17, 2026	5,001-10,000	5,251 contacts →
	Exact match “We are the Enel Group company dedicated to the development and management of renewable energy generation worldwide.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
2	SICIM	Exact match	Busseto, ItalyHQ recorded Sep 17, 2026	10001+	2,404 contacts →
	Exact match “SICIM is a leading Worldwide EPC Contractor since 1962, offering all kinds of services related to the production, treatment and transportation of traditional energy sources and…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
3	NWG S.P.A	Exact match	Prato, ItalyHQ recorded Sep 17, 2026	n/a	766 contacts →
	Exact match “Nata a Prato nel 2003 è oggi una delle più importanti realtà nel mercato della Green Economy.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
4	Dolomiti Energia	Exact match	Rovereto, ItalyHQ recorded Sep 17, 2026	1,001-5,000	369 contacts →
	Exact match “Rinnovabili.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
5	STE Energy	Exact match	Padua, ItalyHQ recorded Sep 17, 2026	51-200	194 contacts →
	Exact match “Since June 2025, STE Energy has been acquired by, becoming part of the world.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
6	Espe S.P.A	Exact match	Grantorto, ItalyHQ recorded Sep 17, 2026	51-200	144 contacts →
	Exact match “Know-how, experience, reliability, innovation.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
7	Algowatt	Exact match	Milan, ItalyHQ recorded Sep 17, 2026	n/a	137 contacts →
	Exact match “TerniEnergia is active in the energies from renewable sources business, particularly in the photovoltaic segment, where it operates as a system integrator.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
8	Tozzi Green S.P.A	Exact match	Mezzano, ItalyHQ recorded Sep 17, 2026	201-500	132 contacts →
	Exact match “Tozzi Green è una società specializzata in servizi e progetti per lo sviluppo d’impianti e per la generazione di energia da fonti rinnovabili.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
9	Asja Energy	Exact match	Rivoli, ItalyHQ recorded Sep 17, 2026	201-500	114 contacts →
	Exact match “Asja is an International group of companies that design, build and manage renewable power plants.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
10	Siel S.P.A	Exact match	Trezzano Rosa, ItalyHQ recorded Sep 17, 2026	51-200	100 contacts →
	Exact match “In its current structure, Siel Group is a holding company deeply rooted in a world-class economic, technological, and cultural context.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
11	Esapro	Exact match	Milan, ItalyHQ recorded Sep 17, 2026	51-200	98 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
12	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
13	Delos Power	Exact match	Milan, ItalyHQ recorded Sep 17, 2026	51-200	85 contacts →
	Exact match “Ogni giorno, lavoriamo per generare un impatto positivo sull'ambiente e sulla società.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
14	Italia GAS E Luce	Exact match	Camaiore, ItalyHQ recorded Sep 17, 2026	51-200	83 contacts →
	Exact match “Advanced industrial knowledge and detailed research help us deliver renewable and cost-effective energy to tens of thousands of businesses and homes around the world.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
15	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
16	Sunnerg Group	Exact match	Milan, ItalyHQ recorded Sep 17, 2026	51-200	69 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
17	Lenergy SPA	Exact match	Fornacette, ItalyHQ recorded Sep 17, 2026	51-200	68 contacts →
	Exact match “In Lenergy, acceleriamo la transizione verso l'indipendenza energetica per famiglie e imprese.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
18	Unoenergy Green Solutions SPA	Exact match	Cascina, ItalyHQ recorded Sep 17, 2026	201-500	63 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
19	Saccir S.P.A	Exact match	Rome, ItalyHQ recorded Sep 17, 2026	201-500	61 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
20	Ranzato Impianti	Exact match	Padua, ItalyHQ recorded Sep 17, 2026	51-200	59 contacts →
	Exact match “Riqualificazione energetica e impianti tecnologici.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
21	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
22	EVA Energie Valsabbia	Exact match	Gavardo, ItalyHQ recorded Sep 17, 2026	51-200	57 contacts →
	Exact match “EVA: il tuo partner per un futuro energetico sostenibile.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
23	Undo Group	Exact match	Rome, ItalyHQ recorded Sep 17, 2026	51-200	55 contacts →
	Exact match “We produce sustainable energy by covering the entire supply chain from site scouting to the construction and operational management of our power plants.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
24	Inergia S.P.A	Exact match	Rome, ItalyHQ recorded Sep 17, 2026	11-50	53 contacts →
	Exact match “Inergia was founded in 2003 with the strategic diversification of the Santarelli group, a leader in Italy’s real estate industry.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
25	Stanzani S.P.A	Exact match	Sala Bolognese, ItalyHQ recorded Sep 17, 2026	51-200	52 contacts →
	Exact match “Serviamo imprese, organizzazioni e persone con progetti e soluzioni di impiantistica personalizzate ed ecosostenibili, in modo rapido e senza sprechi, quando è per loro utile…” 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 “renewable energy contractors”. 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 1,713 renewable energy contractors based in Italy

See the full list, filter by size, metro and specialty, and access 4,985 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Renewable energy contractors based in Italy at a glance

As of Sep 17, 2026

23.8%Verified-email coverage

12.2Average contacts per company

1-10Median size (employees)

5.5%Largest-city concentration · Rome

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

852

11-50

680

51-200

128

201-500

501-1,000

1,001-5,000

5,001-10,000

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 1,713 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 “renewable energy contractors” 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 4,985 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.

Renewable energy contractors by metro

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

How many renewable energy contractors are there based in Italy?

RevenueBase identified 1,713 company matches for renewable energy contractors 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?

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

Which city has the most renewable energy contractors?

Rome leads with 94 company records, followed by Milan (93) and Turin (38).

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 4,985 professional contacts with verified work emails tracked across these 1,713 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.