Company lists · Data verified August 2026

Top 25 Energy efficiency consulting firms based in Italy

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

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 859 companies tracked

There are 859 energy efficiency consulting firms headquartered in Italy (RevenueBase, August 2026). RevenueBase tracks 4,985 professional contacts across them, including 1,228 with verified work emails and 248 with mobile numbers. Roma is the largest hub.

This list covers energy efficiency consulting firms headquartered in Italy, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.

859Companies

4,985Contacts tracked

1,228Verified emails

248Mobile numbers

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The 25 largest energy efficiency consulting firms based in Italy

Ranked by team size

Top 25 of 859 energy efficiency consulting firms based in Italy, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	Greenergy	Castellaneta	51-200	101	58
2	Teicosgroup	Roma	51-200	86	62
3	Energy Team S.P.A	Trezzano Sul Naviglio	51-200	83	54
4	A3sprogetti	Pescara	11-50	78	1
5	Clever Servizi Energetici S.P.A	Settimo Milanese	51-200	64	25
6	Samso SPA	Milano Mi	11-50	42	16
7	Espiù S.R.L. Società Benefit	Oderzo	51-200	39	16
8	Kennew SRL	Nembro	51-200	29	15
9	IES Solare S.R.L	Livorno	51-200	29	15
10	Energysave	Cesano Maderno	11-50	28	12
11	Arcoservizi S.P.A	Torino	51-200	26	17
12	ALI Energy Advisor	Portogruaro	11-50	22	13
13	Industrial Service & Facility SRL	Napoli	11-50	21	8
14	Sacee S.R.L	Milan	11-50	18	13
15	GLAYX	Pisa	11-50	18	11
16	Baboo Energy Service Company	Omegna	11-50	18	3
17	Cube SRL	Imola	11-50	17	13
18	NSP SRL	Formello	51-200	17	9
19	Greenflex Italia	Rome	501-1,000	16	12
20	Inwega	n/a	11-50	16	11
21	Polo Tecnologico PER L'energia	Lavis	11-50	16	8
22	White Energy Group	Cagliari	11-50	14	11
23	Rossi Power Solutions And Services SRL	Manca	11-50	12	3
24	Omnivolt	Rome	11-50	11	9
25	Enerprice S.R.L	Roma	11-50	11	8

Showing 25 of 859 energy efficiency consulting firms based in Italy

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Energy efficiency consulting firms based in Italy at a glance

As of Aug 28, 2026

1-10Median size (employees)

RomaLargest hub · 43 HQs

248Contacts with mobile numbers

0Emails re-verified in last 30 days

Companies by employee count

1-10

559

11-50

248

51-200

201-500

501-1,000

Energy efficiency consulting firms by metro

Metro	Companies
Energy efficiency consulting firms in Roma	43
Energy efficiency consulting firms in Milano	28
Energy efficiency consulting firms in Torino	23
Energy efficiency consulting firms in Milan	23
Energy efficiency consulting firms in Rome	19
Energy efficiency consulting firms in Brescia	16
Energy efficiency consulting firms in Napoli	15

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “energy efficiency consulting firms”, with match quality audited by blind human judging, and headquartered in Italy.
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: Contact records re-verify on a rolling cadence; 0 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many energy efficiency consulting firms are there based in Italy?

There are 859 energy efficiency consulting firms headquartered in Italy as of August 2026 (RevenueBase).

What is the largest company on this list?

Greenergy, headquartered in Castellaneta, tops this list with the largest team on record.

Which city has the most energy efficiency consulting firms?

Roma leads with 43 headquartered companies, followed by Milano (28) and Torino (23).

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 1,228 verified decision-maker contacts tracked across these 859 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.