Company lists · Data refreshed September 2026

Top 25 Clean energy project developers based in Rome, Italy

Name: Clean energy project developers based in Rome, Italy
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 16, 2026 87 companies tracked

RevenueBase identified 87 clean energy project developers headquartered in Rome, Italy as of September 2026 and tracks 6,408 professional contacts across them, including 2,028 with verified work emails. Across Italy, Milan is the largest hub for this category (104 companies); Rome follows with 87.

This list covers clean energy project developers headquartered in Rome, 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 16, 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 16, 2026 86% judged on-target in blind review

87Companies

6,408Contacts tracked

2,028Verified emails

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The 25 largest clean energy project developers based in Rome, Italy

Ranked by team size

Top 25 of 87 clean energy project developers based in Rome, Italy, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to clean energy project developers: 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	Partial evidence	Rome, ItalyHQ checked Sep 16, 2026	5,001-10,000	5,251 contacts →
	Partial evidence “We are the Enel Group company dedicated to the development and management of renewable energy generation worldwide.” Source: RevenueBase Database · checked Sep 16, 2026
2	Geko S.P.A	Partial evidence	Rome, ItalyHQ checked Sep 16, 2026	201-500	322 contacts →
	Partial evidence “GEKO opera in tutte le fasi strategiche della filiera energetica, dallo sviluppo, realizzazione, gestione e service di impianti di generazione elettrica alla vendita di energia e…” Source: RevenueBase Database · checked Sep 16, 2026
3	Iberdrola Italia	Partial evidence	Rome, ItalyHQ checked Sep 16, 2026	n/a	60 contacts →
	Partial evidence “Con oltre 180 anni di storia, Iberdrola è uno dei leader globali dell’energia rinnovabile e della transizione energetica.” Source: RevenueBase Database · checked Sep 16, 2026
4	Undo Group	Partial evidence	Rome, ItalyHQ checked Sep 16, 2026	51-200	55 contacts →
	Partial 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 16, 2026
5	Inergia S.P.A	Indirect evidence	Rome, ItalyHQ checked Sep 16, 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 16, 2026
6	Absolute Energy	Partial evidence	Rome, ItalyHQ checked Sep 16, 2026	11-50	37 contacts →
	Partial evidence “Absolute Energy is an Independent Power Producer (IPP) specialized in the development, construction, and management of renewable energy and storage plants.” Source: RevenueBase Database · checked Sep 16, 2026
7	Kerr SPA	Partial evidence	Rome, ItalyHQ checked Sep 16, 2026	11-50	28 contacts →
	Partial evidence “Siamo una piattaforma specializzata in progetti di energia rinnovabile ed efficientamento energetico.” Source: RevenueBase Database · checked Sep 16, 2026
8	Genera Group	Partial evidence	Rome, ItalyHQ checked Sep 16, 2026	51-200	25 contacts →
	Partial evidence “Genera Group® is an international investment holding company with expertise in the fields of energy and process efficiency, renewable energy production and green infrastructures.” Source: RevenueBase Database · checked Sep 16, 2026
9	Studio Rinnovabili	Strong evidence	Rome, ItalyHQ checked Sep 16, 2026	11-50	25 contacts →
	Strong evidence “Studio Rinnovabili since 2004 works to meet the needs of those who want to develop renewable energy and energy efficiency projects by supporting with engineering and analysis.” Source: RevenueBase Database · checked Sep 16, 2026
10	Ness S.P.A. SB	Partial evidence	Rome, ItalyHQ checked Sep 16, 2026	11-50	24 contacts →
	Partial evidence “NESS è una ESCo certificata UNI 11352 che si pone come obiettivo quello di fornire, a clienti pubblici e privati, soluzioni ai problemi di natura energetica ed ambientale.” Source: RevenueBase Database · checked Sep 16, 2026
11	WPD Italia	Partial evidence	Rome, ItalyHQ checked Sep 16, 2026	11-50	23 contacts →
	Partial evidence “Sviluppo delle energie sostenibili, know-how avanzato, innovazione tecnologica, attenzione alle esigenze delle comunità locali.” Source: RevenueBase Database · checked Sep 16, 2026
12	Volt Infrastructure	Strong evidence	Rome, ItalyHQ checked Sep 16, 2026	11-50	21 contacts →
	Strong evidence “Developing and investing in high performing, grid scale, renewable energy projects.” Source: RevenueBase Database · checked Sep 16, 2026
13	Energred Renewables	Partial evidence	Rome, ItalyHQ checked Sep 16, 2026	11-50	21 contacts →
	Partial evidence “Siamo una società di servizi che realizza progetti ad alto valore aggiunto per l’immagazzinamento, la trasformazione e l’utilizzo efficiente dell’energia.” Source: RevenueBase Database · checked Sep 16, 2026
14	Switch Engineering	Indirect evidence	Rome, ItalyHQ checked Sep 16, 2026	11-50	20 contacts →
	Indirect evidence “Switch Engineering nasce dall’esperienza del Gruppo Igeam, che da oltre 40 anni si occupa di sostenibilità, e della Biagi & Partners con le sue notevoli esperienze nel settore…” Source: RevenueBase Database · checked Sep 16, 2026
15	Intellienergia	Indirect evidence	Rome, ItalyHQ checked Sep 16, 2026	11-50	17 contacts →
	Indirect evidence “Intellienergia è uno Spin-off ad elevato valore tecnico-scientifico promosso e partecipato dall’Università degli Studi di Roma Tor Vergata che ha sede presso il parco scientifico…” Source: RevenueBase Database · checked Sep 16, 2026
16	Logen Group	Indirect evidence	Rome, ItalyHQ checked Sep 16, 2026	51-200	15 contacts →
	Indirect evidence “LOGEN S.r.l.” Source: RevenueBase Database · checked Sep 16, 2026
17	Horus Green Energy Investment	Partial evidence	Rome, ItalyHQ checked Sep 16, 2026	1-10	14 contacts →
	Partial evidence “Horus Green energy Investment is an asset management company who provides access to attractive, stable and long-term returns from renewable energy assets based in Italy.” Source: RevenueBase Database · checked Sep 16, 2026
18	Byom S.R.L	Partial evidence	Rome, ItalyHQ checked Sep 16, 2026	11-50	13 contacts →
	Partial evidence “Byom, founded in 2009, is an advisory company that supports Companies and Investment Funds in the industrial, energy and infrastructure markets.” Source: RevenueBase Database · checked Sep 16, 2026
19	Vexuvo	Indirect evidence	Rome, ItalyHQ checked Sep 16, 2026	11-50	13 contacts →
	Indirect evidence “Benvenuti nel nostro mondo sostenibile.” Source: RevenueBase Database · checked Sep 16, 2026
20	Ermes S.P.A	Partial evidence	Rome, ItalyHQ checked Sep 16, 2026	11-50	13 contacts →
	Partial evidence “ERMES SpA opera nella produzione di Energia Elettrica da Fonte Rinnovabile attraverso il Development - EPCM - O&M service.” Source: RevenueBase Database · checked Sep 16, 2026
21	Verdeco	Partial evidence	Rome, ItalyHQ checked Sep 16, 2026	11-50	11 contacts →
	Partial evidence “Verdeco è la Energy Service Company specializzata in efficienza energetica, servizi di ingegneria e fotovoltaico.” Source: RevenueBase Database · checked Sep 16, 2026
22	STP Studi Tecnologie Progetti S.R.L	Indirect evidence	Rome, ItalyHQ checked Sep 16, 2026	11-50	10 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 16, 2026
23	NEXT	Partial evidence	Rome, ItalyHQ checked Sep 16, 2026	11-50	9 contacts →
	Partial evidence “Operiamo nel campo della pianificazione, progettazione e realizzazione di interventi finalizzati all’efficientamento energetico ed allo sviluppo delle fonti rinnovabili.” Source: RevenueBase Database · checked Sep 16, 2026
24	Hazel NEW Energy	Strong evidence	Rome, ItalyHQ checked Sep 16, 2026	1-10	8 contacts →
	Strong evidence “Hazel is active in the engineering sector in renewable energy projects, with particular focus on photovoltaic, bess and innovative energy transition projects where we provide…” Source: RevenueBase Database · checked Sep 16, 2026
25	EPICO	Partial evidence	Rome, ItalyHQ checked Sep 16, 2026	11-50	8 contacts →
	Partial evidence “Energy Production Industry Company S.r.l.(EPICO) dal investe in impianti di produzione di energia da fonti rinnovabili di potenza installata compresa tra 1MW e 10MW, gestendo…” Source: RevenueBase Database · checked Sep 16, 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: clean energy project developers. 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 clean energy project developers.
Partial evidence: Its own public description names part of clean energy project developers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name clean energy project developers. 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 87 clean energy project developers based in Rome, Italy

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Clean energy project developers based in Rome, Italy at a glance

As of Sep 16, 2026

31.6%Verified-email coverage

73.7Average contacts per company

11-50Median size (employees)

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

5,001-10,000

10001+

Email recency for this list is measured across the whole Italy list rather than for Rome, so it is reported there. Company counts and contact totals on this page are exact for Rome.

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 clean energy project developers, 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 Rome, Italy whose own description of what they do matches “clean energy project developers”. 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 clean energy project developers), 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 clean energy project developers, and records with no verified work email. Companies headquartered outside Rome 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, 2,028 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 16, 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.

Clean energy project developers by metro in Italy

Clean energy project developers in Milan104

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 clean energy project developers, 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 clean energy project developers are there based in Rome, Italy?

RevenueBase identified 87 clean energy project developers headquartered in Rome, 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 Rome, tops this list with the largest team on record.

Which city in Italy has the most clean energy project developers?

Milan leads Italy with 104 headquartered companies, followed by Rome (87) and Turin (31).

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 2,028 verified decision-maker contacts tracked across these 87 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 16, 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.