Company lists · Data refreshed September 2026

Top 25 Energy efficiency investment firms based in Italy

Name: Energy efficiency investment firms based in Italy
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 2, 2026 244 companies tracked

RevenueBase identified 244 energy efficiency investment firms headquartered in Italy as of September 2026 and tracks 1,869 professional contacts across them, including 519 with verified work emails and 86 with mobile numbers. Roma is the largest hub.

This list covers energy efficiency investment firms 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 2, 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 RevenueBase Smart Search rating on every row Refreshed Sep 2, 2026 86% judged on-target in blind review

244Companies

1,869Contacts tracked

519Verified emails

86Mobile numbers

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The 25 largest energy efficiency investment firms based in Italy

Ranked by team size

Top 25 of 244 energy efficiency investment firms based in Italy, ranked by team size, largest first. Data refreshed Sep 2, 2026. RevenueBase Smart Search rates how each company's information relates to energy efficiency investment firms: 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	City Green Light	Strong evidence	Vicenza, Italy	51-200	139 contacts →
	Strong evidence “City Green Light è un Gruppo che opera nel campo del risparmio e dell'efficientamento energetico, partecipata da primari fondi di investimento nazionali e internazionali…” Source: RevenueBase Database · checked Sep 2, 2026
2	Clever Servizi Energetici S.P.A	Partial evidence	Settimo Milanese, Italy	51-200	64 contacts →
	Partial evidence “Comat Servizi Energetici S.p.A.” Source: RevenueBase Database · checked Sep 2, 2026
3	Inergia S.P.A	Indirect evidence	Roma, Italy	11-50	52 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 2, 2026
4	Gaia Energy Systems	Strong evidence	Gricignano Di Aversa, Italy	11-50	43 contacts →
	Strong evidence “Gaia Energy Systems opera da anni nei settori delle energie rinnovabili e dell’efficientamento energetico, sia al fianco di aziende che di privati.” Source: RevenueBase Database · checked Sep 2, 2026
5	IES Solare S.R.L	Strong evidence	Livorno, Italy	51-200	29 contacts →
	Strong evidence “Ies Solare srl vanta 20 anni di esperienza nel campo delle energie rinnovabili e risparmio energetico, proponendo soluzioni innovative e tecnologiche per l’efficientamento…” Source: RevenueBase Database · checked Sep 2, 2026
6	Kerr SPA	Strong evidence	Roma, Italy	11-50	27 contacts →
	Strong evidence “Siamo una piattaforma specializzata in progetti di energia rinnovabile ed efficientamento energetico.” Source: RevenueBase Database · checked Sep 2, 2026
7	Prime Green Solutions Benefit	Partial evidence	Milano, Italy	51-200	27 contacts →
	Partial evidence “Prime Green Solutions è la società del gruppo RINA Prime dedicata alla riqualificazione energetica e alla trasformazione sostenibile del patrimonio immobiliare, attraverso modelli…” Source: RevenueBase Database · checked Sep 2, 2026
8	Arcoservizi S.P.A	Partial evidence	Torino, Italy	51-200	26 contacts →
	Partial evidence “Siamo uno dei principali competitor nel mercato dei servizi energetici, con una forte attitudine all’innovazione tecnologica, alla riqualificazione dei servizi, al risparmio…” Source: RevenueBase Database · checked Sep 2, 2026
9	Genera Group	Strong evidence	Rome, Italy	51-200	25 contacts →
	Strong 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 2, 2026
10	Veos Group	Partial evidence	Milan, Italy	201-500	18 contacts →
	Partial evidence “Active since March 2014, Veos invests in innovative technologies and business models to optimize energy and environmental resources.” Source: RevenueBase Database · checked Sep 2, 2026
11	Baboo Energy Service Company	Partial evidence	Omegna, Italy	11-50	18 contacts →
	Partial evidence “DAL 2009 OLTRE 70 CLIENTI HANNO TROVATO IL TESORO NELL'ENERGIA.” Source: RevenueBase Database · checked Sep 2, 2026
12	NSP SRL	Strong evidence	Formello, Italy	51-200	17 contacts →
	Strong evidence “NSP nasce dalla pluriennale esperienza dei suoi fondatori nel campo degli impianti di conversione dell’energia ad alta ed altissima efficienza, attraverso la fornitura, gestione…” Source: RevenueBase Database · checked Sep 2, 2026
13	Santa Teresa Energy	Partial evidence	Gragnano Trebbiense, Italy	11-50	16 contacts →
	Partial evidence “Santa Teresa Energy s.r.l.” Source: RevenueBase Database · checked Sep 2, 2026
14	Officinae Verdi Group - OVG	Strong evidence	Roma, Italy	11-50	16 contacts →
	Strong evidence “Energy Efficiency Group nato dalla joint venture UniCredit-WWF, opera nel settore dell’efficienza energetica come system integrator, coniugando servizi, tecnologie e finanza per…” Source: RevenueBase Database · checked Sep 2, 2026
15	Gbsols S.R.L	Strong evidence	Mi, Italy	11-50	16 contacts →
	Strong evidence “Our company provides energy efficiency and alternative energy turnkey solutions for residential and business customers” Source: RevenueBase Database · checked Sep 2, 2026
16	Tekne Esco	Strong evidence	Milano, Italy	11-50	14 contacts →
	Strong evidence “TEKNE ESCo, is a certified (UNI CEI 11352 and ISO 9001:2015) Energy Service Company, which supports and finance the customer throughout the energy efficiency process in building…” Source: RevenueBase Database · checked Sep 2, 2026
17	LIO Energy	Partial evidence	Milan, Italy	11-50	14 contacts →
	Partial evidence “Lio Energy is a renewable energy company focused on developing, investing in, and delivering high-value clean power solutions.” Source: RevenueBase Database · checked Sep 2, 2026
18	Edilvi SPA	Partial evidence	Villorba, Italy	11-50	13 contacts →
	Partial evidence “Società di costruzioni dal 1984 e E.S.Co.(Società di Servizi Energetici) dal 2011.” Source: RevenueBase Database · checked Sep 2, 2026
19	Renerwave	Strong evidence	Firenze, Italy	11-50	11 contacts →
	Strong evidence “Renerwave affianca il cliente, pubblico e privato, nelle varie fasi di sviluppo, progettazione, realizzazione e gestione degli interventi di efficientamento energetico.” Source: RevenueBase Database · checked Sep 2, 2026
20	Rete Irene	Partial evidence	Milano, Italy	11-50	10 contacts →
	Partial evidence “Rete Irene “il Rinnovamento Energetico Negli Edifici” è un network di aziende che promuove e realizza interventi di Riqualificazione Energetica integrata involucro-impianti…” Source: RevenueBase Database · checked Sep 2, 2026
21	Ecogruppo Spambiente	Indirect evidence	Rome, Italy	51-200	10 contacts →
	Indirect evidence “ECOGRUPPO SPAmbiente è la rete che riunisce i migliori player dell’Edilizia sostenibile.” Source: RevenueBase Database · checked Sep 2, 2026
22	Gksd Esco	Partial evidence	Milano, Italy	11-50	9 contacts →
	Partial evidence “GKSD esco is a GKSD operating company that provides business services to the energy sector.” Source: RevenueBase Database · checked Sep 2, 2026
23	FB Capital	Indirect evidence	Vicenza, Italy	11-50	9 contacts →
	Indirect evidence “FBCAPITAL SVILUPPA INVESTIMENTI IMMOBILIARI AD ALTA RESA.” Source: RevenueBase Database · checked Sep 2, 2026
24	Energy Wave S.P.A	Partial evidence	Milano, Italy	11-50	8 contacts →
	Partial evidence “Gestione integrata ed efficientamento operativo, oltre che attività di ricerca, progettazione, management, finanziamento, installazione, e manutenzione.” Source: RevenueBase Database · checked Sep 2, 2026
25	Terrax SRL Gmbh	Indirect evidence	Peschiera Del Garda, Italy	11-50	6 contacts →
	Indirect evidence “We have an ambitious project: we like the idea of being able to save the world.” Source: RevenueBase Database · checked Sep 2, 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: energy efficiency investment firms. 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 energy efficiency investment firms.
Partial evidence: Its own public description names part of energy efficiency investment firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name energy efficiency investment firms. 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 244 energy efficiency investment firms based in Italy

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Energy efficiency investment firms based in Italy at a glance

As of Sep 2, 2026

27.8%Verified-email coverage

4.6%Mobile-number coverage

7.7Average contacts per company

1-10Median size (employees)

6.1%Largest-city concentration · Roma

Sep 2, 2026Page data refreshed

Companies by employee count

1-10

135

11-50

51-200

201-500

501-1,000

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 energy efficiency investment firms, 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 “energy efficiency investment firms”. 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 energy efficiency investment firms), 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 energy efficiency investment firms, 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, 519 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 2, 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.

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 energy efficiency investment firms, 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 energy efficiency investment firms are there based in Italy?

RevenueBase identified 244 energy efficiency investment firms 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?

City Green Light, headquartered in Vicenza, tops this list with the largest team on record.

Which city has the most energy efficiency investment firms?

Roma leads with 15 headquartered companies, followed by Milano (13) and Milan (12).

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 519 verified decision-maker contacts tracked across these 244 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 2, 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.