Company lists · Data refreshed September 2026

Top 25 Renewable energy construction companies based in Italy

Name: Renewable energy construction 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 897 companies tracked

RevenueBase identified 897 renewable energy construction companies headquartered in Italy as of September 2026 and tracks 17,487 professional contacts across them, including 4,603 with verified work emails. Roma is the largest hub.

This list covers renewable energy construction 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 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

897Companies

17,487Contacts tracked

4,603Verified emails

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The 25 largest renewable energy construction companies based in Italy

Ranked by team size

Top 25 of 897 renewable energy construction companies 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 renewable energy construction 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	Enel Green Power	Strong evidence	Roma, ItalyHQ checked Sep 17, 2026	5,001-10,000	5,251 contacts →
	Strong evidence “We are the Enel Group company dedicated to the development and management of renewable energy generation worldwide.” Source: RevenueBase Database · checked Sep 17, 2026
2	SICIM	Partial evidence	Busseto, ItalyHQ checked Sep 17, 2026	10001+	2,404 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 17, 2026
3	NWG S.P.A	Indirect evidence	Prato, ItalyHQ checked Sep 17, 2026	n/a	766 contacts →
	Indirect evidence “Nata a Prato nel 2003 è oggi una delle più importanti realtà nel mercato della Green Economy.” Source: RevenueBase Database · checked Sep 17, 2026
4	ERG SPA	Strong evidence	Genova, ItalyHQ checked Sep 17, 2026	501-1,000	636 contacts →
	Strong evidence “We are a leading independent operator of clean energy from renewable sources, operating in nine European countries and in the United States.” Source: RevenueBase Database · checked Sep 17, 2026
5	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
6	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
7	NBI SPA	Partial evidence	Bologna, ItalyHQ checked Sep 17, 2026	501-1,000	184 contacts →
	Partial evidence “Belonging to Italian industrial giant Webuild Group, NBI develops turnkey projects and provides expert advice and intervention with regard to plant design and energy services…” Source: RevenueBase Database · checked Sep 17, 2026
8	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
9	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
10	Tozzi Green S.P.A	Partial evidence	Mezzano, ItalyHQ checked Sep 17, 2026	201-500	132 contacts →
	Partial evidence “Tozzi Green è una società specializzata in servizi e progetti per lo sviluppo d’impianti e per la generazione di energia da fonti rinnovabili.” Source: RevenueBase Database · checked Sep 17, 2026
11	Asja Energy	Partial evidence	Rivoli, ItalyHQ checked Sep 17, 2026	201-500	114 contacts →
	Partial evidence “Asja is an International group of companies that design, build and manage renewable power plants.” Source: RevenueBase Database · checked Sep 17, 2026
12	Ivpc Group	Partial evidence	Avellino, ItalyHQ checked Sep 17, 2026	201-500	110 contacts →
	Partial evidence “Uno dei principali gruppi a livello nazionale nel settore delle energie rinnovabili.” Source: RevenueBase Database · checked Sep 17, 2026
13	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
14	Esapro	Partial evidence	Milano, ItalyHQ checked Sep 17, 2026	51-200	98 contacts →
	Partial 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 17, 2026
15	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
16	Italia GAS E Luce	Strong evidence	Camaiore, ItalyHQ checked Sep 17, 2026	51-200	83 contacts →
	Strong evidence “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.” Source: RevenueBase Database · checked Sep 17, 2026
17	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
18	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
19	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
20	Undo Group	Strong evidence	Rome, ItalyHQ checked Sep 17, 2026	51-200	55 contacts →
	Strong evidence “We produce sustainable energy by covering the entire supply chain from site scouting to the construction and operational management of our power plants.” Source: RevenueBase Database · checked Sep 17, 2026
21	Inergia S.P.A	Indirect evidence	Rome, ItalyHQ checked Sep 17, 2026	11-50	53 contacts →
	Indirect evidence “Inergia was founded in 2003 with the strategic diversification of the Santarelli group, a leader in Italy’s real estate industry.” Source: RevenueBase Database · checked Sep 17, 2026
22	TEN Project	Partial evidence	San Martino Sannita, ItalyHQ checked Sep 17, 2026	11-50	52 contacts →
	Partial evidence “L’ambito principale di attività riguarda la progettazione, la realizzazione e la gestione di infrastrutture elettriche e di impianti di produzione di energia da fonti rinnovabili…” Source: RevenueBase Database · checked Sep 17, 2026
23	Scandiuzzi Steel Constructions SPA	Partial evidence	Volpago Del Montello, ItalyHQ checked Sep 17, 2026	51-200	52 contacts →
	Partial evidence “SCANDIUZZI aim is to be a reference company in both general and industrial construction field, offering to its customers complete "turnkey" solutions and focusing its attention on…” Source: RevenueBase Database · checked Sep 17, 2026
24	Tonello Energie	Partial evidence	Fara Vicentino, ItalyHQ checked Sep 17, 2026	11-50	48 contacts →
	Partial evidence “Tonello Energie nasce dalla tradizione industriale della Capogruppo Tonello Srl, azienda leader dal 1981 a livello mondiale nella produzione di macchinari del tessile.” Source: RevenueBase Database · checked Sep 17, 2026
25	Natpower	Indirect evidence	Milano, ItalyHQ checked Sep 17, 2026	51-200	47 contacts →
	Indirect evidence “NatPower is an independent company founded in 2019, led by accomplished managers with more than 25 years of expertise in the global green industry.” 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: renewable energy construction 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 renewable energy construction companies.
Partial evidence: Its own public description names part of renewable energy construction companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name renewable energy construction 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 897 renewable energy construction companies based in Italy

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Renewable energy construction companies based in Italy at a glance

As of Sep 17, 2026

26.3%Verified-email coverage

19.5Average contacts per company

11-50Median size (employees)

4.8%Largest-city concentration · Roma

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

415

11-50

370

51-200

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 897 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 renewable energy construction 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 “renewable energy construction 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 renewable energy construction 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 renewable energy construction 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, 4,603 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.

Renewable energy construction companies by metro

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 renewable energy construction 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 renewable energy construction companies are there based in Italy?

RevenueBase identified 897 renewable energy construction 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?

Enel Green Power, headquartered in Roma, tops this list with the largest team on record.

Which city has the most renewable energy construction companies?

Roma leads with 43 headquartered companies, followed by Milano (27) and Milan (26).

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 4,603 verified decision-maker contacts tracked across these 897 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.