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Company lists · Data refreshed September 2026

Top 18 Renewable energy consultancy companies based in Roma, Italy

Compiled by the RevenueBase Data Team Data refreshed Sep 5, 2026 76 companies tracked

RevenueBase identified 76 renewable energy consultancy companies headquartered in Roma, Italy as of September 2026 and tracks 812 professional contacts across them, including 259 with verified work emails. Roma is the largest hub.

This list covers renewable energy consultancy companies headquartered in Roma, 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, how directly it supports the match, and when it was last checked. Data refreshed September 5, 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 HQ checked on every row Match evidence on every row Refreshed Sep 5, 2026 86% judged on-target in blind review
76Companies
812Contacts tracked
259Verified emails
Explore all 76 companies → Free signup · no credit card · 500 free credits

The 18 largest renewable energy consultancy companies based in Roma, Italy

Ranked by team size
Top 18 of 76 renewable energy consultancy companies based in Roma, Italy, ranked by team size, largest first. Data refreshed Sep 5, 2026. Evidence rates how directly each company's own description names renewable energy consultancy companies: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#CompanyHeadquartersEmployeesContacts
1
KEY To EnergyPartial evidence
Roma, ItalyHQ checked Sep 5, 202651-20094

“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: company website · checked Sep 5, 2026
2
EOS Consulting S.P.APartial evidence
Roma, ItalyHQ checked Sep 5, 202611-5066

“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: company website · checked Sep 5, 2026
3
Studio RinnovabiliStrong evidence
Roma, ItalyHQ checked Sep 5, 202611-5025

“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: company website · checked Sep 5, 2026
4
Ness S.P.A. SBPartial evidence
Roma, ItalyHQ checked Sep 5, 202611-5024

“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: company website · checked Sep 5, 2026
5
WPD ItaliaPartial evidence
Roma, ItalyHQ checked Sep 5, 202611-5023

“Sviluppo delle energie sostenibili, know-how avanzato, innovazione tecnologica, attenzione alle esigenze delle comunità locali.”

Source: company website · checked Sep 5, 2026
6
Switch EngineeringIndirect evidence
Roma, ItalyHQ checked Sep 5, 202611-5020

“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: company website · checked Sep 5, 2026
7
IntellienergiaIndirect evidence
Roma, ItalyHQ checked Sep 5, 202611-5017

“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: company website · checked Sep 5, 2026
8
VDP SRLPartial evidence
Roma, ItalyHQ checked Sep 5, 202611-5016

“VDP is an Italian engineering company that operates at National and International level in the field of research, consultancy and design for environmental sustainability.”

Source: company website · checked Sep 5, 2026
9
Ermes S.P.APartial evidence
Roma, ItalyHQ checked Sep 5, 202611-5013

“ERMES SpA opera nella produzione di Energia Elettrica da Fonte Rinnovabile attraverso il Development - EPCM - O&M service.”

Source: company website · checked Sep 5, 2026
10
NEXTPartial evidence
Roma, ItalyHQ checked Sep 5, 202611-509

“Operiamo nel campo della pianificazione, progettazione e realizzazione di interventi finalizzati all’efficientamento energetico ed allo sviluppo delle fonti rinnovabili.”

Source: company website · checked Sep 5, 2026
11
Enerprice S.R.LPartial evidence
Roma, ItalyHQ checked Sep 5, 202611-508

“Enerprice proviene da anni di esperienza in campo tecnico dell'elettricità; le competenze acquisite sono riutilizzate nel campo dei servizi permettendo di conseguenza una gestione…”

Source: company website · checked Sep 5, 2026
12
Hazel NEW EnergyStrong evidence
Roma, ItalyHQ checked Sep 5, 20261-108

“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: company website · checked Sep 5, 2026
13
flo.renPartial evidence
Roma, ItalyHQ checked Sep 5, 20261-108

“Flo.Ren si occupa di Asset Management di impianti per la produzione di energia rinnovabile assistendo i produttori in tutti gli aspetti tecnici e burocratici.”

Source: company website · checked Sep 5, 2026
14
Zenit Energia SRLPartial evidence
Roma, ItalyHQ checked Sep 5, 20261-107

“Zenit Energia offre su tutto il territorio nazionale servizi per la gestione energetica integrata alle aziende e al mercato residenziale; opera nel campo delle forniture di…”

Source: company website · checked Sep 5, 2026
15
PX Ingegneria S.R.LIndirect evidence
Roma, ItalyHQ checked Sep 5, 20261-104

“Fin dall’inizio degli anni Ottanta, a Roma, l’ing.”

Source: company website · checked Sep 5, 2026
16
Efip SRLPartial evidence
Roma, ItalyHQ checked Sep 5, 20261-103

“EFIP Srl is an engineering company that provides consulting, design, and project and costruction management services in the energy and environmental sectors.”

Source: company website · checked Sep 5, 2026
17
Reiwa Italia S.R.LIndirect evidence
Roma, ItalyHQ checked Sep 5, 20261-103

“Let's go through the history of sustainability together.”

Source: company website · checked Sep 5, 2026
18
Impresa CircolarePartial evidence
Roma, ItalyHQ checked Sep 5, 20261-103

“Siamo un team con oltre 15 anni di esperienza in energia rinnovabile ed economia circolare, oltre ad avere una lunghissima esperienza in ICT, software e telecomunicazioni, in…”

Source: company website · checked Sep 5, 2026

Showing 18 of 76 renewable energy consultancy companies based in Roma, Italy

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Renewable energy consultancy companies based in Roma, Italy at a glance

As of Sep 5, 2026
1-10Median size (employees)
RomaLargest hub · 76 HQs
Contacts with mobile numbers
Sep 5, 2026Data refreshed

Companies by employee count

1-10
44
11-50
24
51-200
8

Email recency for this list is measured across the whole Italy list rather than this city, so it is reported there. Company counts and contact totals on this page are exact for Roma, over 76 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 consultancy companies, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Companies headquartered in Roma, Italy whose own description of what they do matches “renewable energy consultancy companies”. Matching reads each company's description, not its industry code or its name.
What we exclude
Companies whose own description does not clearly place them among renewable energy consultancy companies, and records with no verified work email. Companies headquartered outside Roma 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 an evidence 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, 259 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 5, 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 consultancy companies by metro in Italy

Frequently asked

How many renewable energy consultancy companies are there based in Roma, Italy?

RevenueBase identified 76 renewable energy consultancy companies headquartered in Roma, 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?

KEY To Energy, headquartered in Roma, tops this list with the largest team on record.

Which city has the most renewable energy consultancy companies?

Roma leads with 76 headquartered companies, followed by Milan (59) and Milano (54).

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 259 verified decision-maker contacts tracked across these 76 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 5, 2026.

Ready to reach these companies? Verified emails and direct dials for all 76 renewable energy consultancy companies based in Roma, Italy. Start with a free account, no credit card.

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Related lists

Browse: Companies home · Renewable energy consultancy companies in Italy · All Italy lists · All Renewable energy consultancy companies lists · New lists

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.

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