Company lists · Data refreshed September 2026

Top 25 Renewable energy consulting companies based in Italy

Name: Renewable energy consulting 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 1,227 companies tracked

RevenueBase identified 1,227 renewable energy consulting companies headquartered in Italy as of September 2026 and tracks 9,758 professional contacts across them, including 2,588 with verified work emails. Roma is the largest hub.

This list covers renewable energy consulting 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

1,227Companies

9,758Contacts tracked

2,588Verified emails

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The 25 largest renewable energy consulting companies based in Italy

Ranked by team size

Top 25 of 1,227 renewable energy consulting 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 consulting 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	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
2	Sime S.R.L	Partial evidence	Rosignano Solvay, ItalyHQ checked Sep 17, 2026	201-500	199 contacts →
	Partial evidence “Established in 1989 as an Oil and Gas engineering firm, Sime is now a Group of Companies inspired by its past but future oriented, with special focus on energy transition.” Source: RevenueBase Database · checked Sep 17, 2026
3	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
4	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
5	Montana S.P.A	Strong evidence	Milano, ItalyHQ checked Sep 17, 2026	51-200	129 contacts →
	Strong evidence “Engineering, development and consulting services for waste management, remediation, renewable energy, industrial and technological plants, natural resources, urban & land…” Source: RevenueBase Database · checked Sep 17, 2026
6	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
7	Greenergy	Indirect evidence	Castellaneta, ItalyHQ checked Sep 17, 2026	51-200	99 contacts →
	Indirect evidence “Non siamo tecnici, ma progettisti consapevoli di essere parte del cambiamento.” Source: RevenueBase Database · checked Sep 17, 2026
8	ELC Electroconsult S.P.A	Partial evidence	Milan, ItalyHQ checked Sep 17, 2026	51-200	98 contacts →
	Partial evidence “Engineering Consulting Services ELC Electroconsult S.p.A.” Source: RevenueBase Database · checked Sep 17, 2026
9	BFP	Indirect evidence	Modugno, ItalyHQ checked Sep 17, 2026	11-50	95 contacts →
	Indirect evidence “BFP Group is an engineering & consultancy firm with international offices, applying ten years of experience to offer services worldwide across various sectors, including civil and…” Source: RevenueBase Database · checked Sep 17, 2026
10	KEY To Energy	Strong evidence	Roma, ItalyHQ checked Sep 17, 2026	51-200	94 contacts →
	Strong evidence “Key to Energy is a consulting company made up of a team of professionals with solid experience in main European markets in the retail and wholesale energy sectors.” Source: RevenueBase Database · checked Sep 17, 2026
11	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
12	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
13	EOS Consulting S.P.A	Strong evidence	Roma, ItalyHQ checked Sep 17, 2026	11-50	66 contacts →
	Strong evidence “EOS Consulting è una Advisory Firm, nel settore Energy, Real Estate & Infrastructures, operativa da 20 anni e nata con un’idea guida: la conoscenza come strumento per migliorare.” Source: RevenueBase Database · checked Sep 17, 2026
14	VVA Group	Partial evidence	Milan, ItalyHQ checked Sep 17, 2026	51-200	65 contacts →
	Partial evidence “Valdani Vicari & Associati (VVA), established in 1992, is a consulting company based in Milan with a team of professionals including economists, sociologists, political…” Source: RevenueBase Database · checked Sep 17, 2026
15	Ambiente Italia S.R.L	Partial evidence	Milan, ItalyHQ checked Sep 17, 2026	11-50	64 contacts →
	Partial evidence “Ambiente Italia is a research and consulting institute working in environmental and territorial planning and analysis.” Source: RevenueBase Database · checked Sep 17, 2026
16	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
17	Connecto	Partial evidence	Milan, ItalyHQ checked Sep 17, 2026	11-50	59 contacts →
	Partial evidence “Connecto è una società indipendente di servizi di consulenza e di vendita di soluzioni energetiche integrate che opera con due principi: visione prospettica e prossimità al…” 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	Partial evidence	Rome, ItalyHQ checked Sep 17, 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 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	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
24	GIN Group	Partial evidence	Milano, ItalyHQ checked Sep 17, 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 17, 2026
25	Green Horse Advisory	Partial evidence	Milan, ItalyHQ checked Sep 17, 2026	11-50	45 contacts →
	Partial evidence “Green Horse, acronym for GREEN HORizon for a Sustainable Economy, is an advisory project dedicated exclusively to the energy transition industry with particular attention to…” 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 consulting 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 consulting companies.
Partial evidence: Its own public description names part of renewable energy consulting 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 consulting 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 1,227 renewable energy consulting companies based in Italy

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Renewable energy consulting companies based in Italy at a glance

As of Sep 17, 2026

26.5%Verified-email coverage

8.0Average contacts per company

1-10Median size (employees)

4.5%Largest-city concentration · Roma

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

763

11-50

390

51-200

201-500

501-1,000

1,001-5,000

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 1,227 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 consulting 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 consulting 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 consulting 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 consulting 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, 2,588 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 consulting companies by metro

Renewable energy consulting companies in Roma55
Renewable energy consulting companies in Milan49
Renewable energy consulting companies in Milano45
Renewable energy consulting companies in Rome29
Renewable energy consulting companies in Torino29
Renewable energy consulting companies in Brescia25

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 consulting 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 consulting companies are there based in Italy?

RevenueBase identified 1,227 renewable energy consulting 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?

NWG S.P.A, headquartered in Prato, tops this list with the largest team on record.

Which city has the most renewable energy consulting companies?

Roma leads with 55 headquartered companies, followed by Milan (49) and Milano (45).

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 2,588 verified decision-maker contacts tracked across these 1,227 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.