Company lists · Data refreshed September 2026

Top 25 Renewable energy consultants based in Italy

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

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 1,417 companies tracked

RevenueBase identified 1,417 renewable energy consultants headquartered in Italy as of September 2026 and tracks 10,328 professional contacts across them, including 3,054 with verified work emails. Roma is the largest hub.

This list covers renewable energy consultants 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

1,417Companies

10,328Contacts tracked

3,054Verified emails

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The 25 largest renewable energy consultants based in Italy

Ranked by team size

Top 25 of 1,417 renewable energy consultants 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 consultants: 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	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
2	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
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	3ba Group	Partial evidence	Torino, ItalyHQ checked Sep 17, 2026	51-200	171 contacts →
	Partial evidence “3BA è un gruppo che opera nell'ingegneria e nella consulenza, specializzato in infrastrutture, oil and gas, impianti di produzione di energia, anche da fonti rinnovabili, impianti…” Source: RevenueBase Database · checked Sep 17, 2026
5	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
6	Tekne SPA	Indirect evidence	Milan, ItalyHQ checked Sep 17, 2026	51-200	130 contacts →
	Indirect evidence “Tekne S.p.A.” Source: RevenueBase Database · checked Sep 17, 2026
7	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
8	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
9	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
10	ELC Electroconsult S.P.A	Indirect evidence	Milan, ItalyHQ checked Sep 17, 2026	51-200	98 contacts →
	Indirect evidence “Engineering Consulting Services ELC Electroconsult S.p.A.” Source: RevenueBase Database · checked Sep 17, 2026
11	BFP	Partial evidence	Modugno, ItalyHQ checked Sep 17, 2026	11-50	95 contacts →
	Partial 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
12	KEY To Energy	Partial evidence	Roma, ItalyHQ checked Sep 17, 2026	51-200	94 contacts →
	Partial 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
13	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
14	RR Group	Partial evidence	Montebelluna, ItalyHQ checked Sep 17, 2026	11-50	81 contacts →
	Partial evidence “RR GROUP è un’azienda che da 10 anni offre consulenza alle aziende e ai privati sulla fornitura di energia elettrica e gas naturale.” Source: RevenueBase Database · checked Sep 17, 2026
15	A3sprogetti	Partial evidence	Pescara, ItalyHQ checked Sep 17, 2026	11-50	78 contacts →
	Partial evidence “servizi di progettazione integrata, risparmio energetico, analisi energetiche finalizzate all'energy saving impianti termici impianti elettrici energie alternative.” Source: RevenueBase Database · checked Sep 17, 2026
16	Lenergy SPA	Partial evidence	Fornacette, ItalyHQ checked Sep 17, 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 17, 2026
17	EOS Consulting S.P.A	Partial evidence	Roma, ItalyHQ checked Sep 17, 2026	11-50	66 contacts →
	Partial 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
18	Ambiente Italia S.R.L	Indirect evidence	Milan, ItalyHQ checked Sep 17, 2026	11-50	64 contacts →
	Indirect evidence “Ambiente Italia is a research and consulting institute working in environmental and territorial planning and analysis.” Source: RevenueBase Database · checked Sep 17, 2026
19	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
20	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
21	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
22	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
23	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
24	Open Project	Indirect evidence	Bologna, ItalyHQ checked Sep 17, 2026	11-50	51 contacts →
	Indirect evidence “Open Project S.r.l.” Source: RevenueBase Database · checked Sep 17, 2026
25	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

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 consultants. 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 consultants.
Partial evidence: Its own public description names part of renewable energy consultants, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name renewable energy consultants. 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 1,417 renewable energy consultants based in Italy

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Renewable energy consultants based in Italy at a glance

As of Sep 17, 2026

29.6%Verified-email coverage

7.3Average contacts per company

1-10Median size (employees)

5.1%Largest-city concentration · Roma

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

887

11-50

447

51-200

201-500

501-1,000

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 1,417 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 consultants, 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 consultants”. 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 consultants), 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 consultants, 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, 3,054 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 consultants by metro

Renewable energy consultants in Roma72
Renewable energy consultants in Milano48
Renewable energy consultants in Milan46
Renewable energy consultants in Torino32
Renewable energy consultants in Rome30

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 consultants, 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 consultants are there based in Italy?

RevenueBase identified 1,417 renewable energy consultants 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?

Sime S.R.L, headquartered in Rosignano Solvay, tops this list with the largest team on record.

Which city has the most renewable energy consultants?

Roma leads with 72 headquartered companies, followed by Milano (48) and Milan (46).

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 3,054 verified decision-maker contacts tracked across these 1,417 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.