Company lists · Data refreshed September 2026

Top 25 On-site power generation companies based in Italy

Name: On-site power generation companies based in Italy
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 428 companies tracked

RevenueBase identified 428 on-site power generation companies headquartered in Italy as of September 2026 and tracks 3,729 professional contacts across them, including 834 with verified work emails. Milan is the largest hub.

This list covers on-site power generation 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 20, 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 20, 2026 86% judged on-target in blind review

428Companies

3,729Contacts tracked

834Verified emails

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The 25 largest on-site power generation companies based in Italy

Ranked by team size

Top 25 of 428 on-site power generation companies based in Italy, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to on-site power generation 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	STE Energy	Indirect evidence	Padova, ItalyHQ checked Sep 20, 2026	51-200	194 contacts →
	Indirect evidence “Since June 2025, STE Energy has been acquired by, becoming part of the world.” Source: RevenueBase Database · checked Sep 20, 2026
2	Espe S.P.A	Indirect evidence	Grantorto, ItalyHQ checked Sep 20, 2026	51-200	144 contacts →
	Indirect evidence “Know-how, experience, reliability, innovation.” Source: RevenueBase Database · checked Sep 20, 2026
3	Coelmo SPA	Indirect evidence	Acerra, ItalyHQ checked Sep 20, 2026	51-200	115 contacts →
	Indirect evidence “Fondata nel 1946, Coelmo spa produce Gruppi Elettrogeni e Cogeneratori.” Source: RevenueBase Database · checked Sep 20, 2026
4	Sunprime	Partial evidence	Milan, ItalyHQ checked Sep 20, 2026	51-200	97 contacts →
	Partial evidence “Sunprime è un Independent Power Producer nel settore fotovoltaico in rapida crescita con sede a Milano.” Source: RevenueBase Database · checked Sep 20, 2026
5	Onis Visa Generating Sets - Visa SPA	Partial evidence	Fontanelle, ItalyHQ checked Sep 20, 2026	201-500	79 contacts →
	Partial evidence “ONIS VISA – Reliable Energy Solutions & Custom Power Since 1960 Welcome to ONIS VISA, a leading Italian company specializing in power generators, industrial pumps, energy storage…” Source: RevenueBase Database · checked Sep 20, 2026
6	Ascot Industrial SRL	Strong evidence	Gela, ItalyHQ checked Sep 20, 2026	51-200	63 contacts →
	Strong evidence “ASCOT is an Italian manufacturing group operating internationally in the power energy sector mainly focused on the production of diesel generating sets, hybrid technologies &…” Source: RevenueBase Database · checked Sep 20, 2026
7	Saccir S.P.A	Indirect evidence	Roma, ItalyHQ checked Sep 20, 2026	201-500	61 contacts →
	Indirect evidence “Nata nel 1938, SACCIR è parte del gruppo SAMOVAR ha accompagnato l’evoluzione dell’energia in Italia, diventando un punto di riferimento nel settore dei multiservizi tecnologici.” Source: RevenueBase Database · checked Sep 20, 2026
8	Energy Italy	Indirect evidence	Costermano Sul Garda, ItalyHQ checked Sep 20, 2026	11-50	59 contacts →
	Indirect 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 20, 2026
9	Tedom Italia S.P.A	Indirect evidence	Lomagna, ItalyHQ checked Sep 20, 2026	51-200	58 contacts →
	Indirect evidence “TEDOM Italia SpA nasce a valle dell’acquisizione a settembre 2024 di Intergen SpA da parte di TEDOM A.S, azienda con sede nella Repubblica Ceca, entrata a far parte del gruppo…” Source: RevenueBase Database · checked Sep 20, 2026
10	Elcos Power Generators	Strong evidence	Grumello Cremonese Ed Uniti, ItalyHQ checked Sep 20, 2026	51-200	44 contacts →
	Strong evidence “ELCOS POWER GENERATORS is an independent group that designs and produces in Italy, systems for the generation of electric energy (in emergency conditions, in self-production, of…” Source: RevenueBase Database · checked Sep 20, 2026
11	Comef S.R.L	Partial evidence	Tradate, ItalyHQ checked Sep 20, 2026	51-200	43 contacts →
	Partial evidence “Comef designs and builds systems for energy generation from renewable sources, energy plants from biomasses (biomass to energy), energy plants from waste (waste to energy), and…” Source: RevenueBase Database · checked Sep 20, 2026
12	Ausonia S.R.L	Partial evidence	Marsala, ItalyHQ checked Sep 20, 2026	51-200	39 contacts →
	Partial evidence “AUSONIA is leader in designing, manufacturing and marketing power generators up to kVA, with thousands of deployments worldwide for critical applications: Oil & Gas, Mining…” Source: RevenueBase Database · checked Sep 20, 2026
13	Effetre	Indirect evidence	Paderno Dugnano, ItalyHQ checked Sep 20, 2026	11-50	30 contacts →
	Indirect evidence “EFFETRE è una Cogeneration Specialist Company nata nel 2015 dal desiderio di un team di professionisti, con esperienza trentennale nella produzione di macchine di cogenerazione…” Source: RevenueBase Database · checked Sep 20, 2026
14	Ravano Power	Partial evidence	Genova, ItalyHQ checked Sep 20, 2026	11-50	27 contacts →
	Partial evidence “Il gruppo Ravano Power, costituito nel 2006, Si è occupato di distribuzione di gas GPL e sviluppo, progettazione e realizzazione di centrali a fonti rinnovabili (biogas…” Source: RevenueBase Database · checked Sep 20, 2026
15	Peridot Solar	Partial evidence	Milan, ItalyHQ checked Sep 20, 2026	11-50	25 contacts →
	Partial evidence “Peridot Solar, founded in 2022, is a leading international Independent Power Producer specializing in renewable energy solutions.” Source: RevenueBase Database · checked Sep 20, 2026
16	Revalue Energies	Partial evidence	Milan, ItalyHQ checked Sep 20, 2026	11-50	23 contacts →
	Partial evidence “Revalue Energies aims to be a benchmark in the renewable energy landscape, focused on creating sustainable value in every step we take.” Source: RevenueBase Database · checked Sep 20, 2026
17	Ferplant Srl-Gruppo Mondopower	Indirect evidence	Torino, ItalyHQ checked Sep 20, 2026	11-50	23 contacts →
	Indirect evidence “Ferplant srl, ramo operativo del gruppo MondoPower,opera attraverso un gruppo composto da ingegneri esperti, preparati e specializzati in diversi settori.” Source: RevenueBase Database · checked Sep 20, 2026
18	Bruno Generators	Partial evidence	Grottaminarda, ItalyHQ checked Sep 20, 2026	51-200	23 contacts →
	Partial evidence “Bruno Generators is one of the most important Italian companies specialized in the design and construction of power generators and lighting towers.” Source: RevenueBase Database · checked Sep 20, 2026
19	Mercurio SRL	Indirect evidence	Verbania, ItalyHQ checked Sep 20, 2026	51-200	22 contacts →
	Indirect evidence “Mercurio è una società di ingegneria e servizi in grado di progettare, realizzare, condurre e manutenere impianti per la produzione di energia ed in particolare impianti in…” Source: RevenueBase Database · checked Sep 20, 2026
20	Tecnoenergy Service	Indirect evidence	Milano, ItalyHQ checked Sep 20, 2026	51-200	21 contacts →
	Indirect evidence “La Tecnoenergy Service s.r.l.” Source: RevenueBase Database · checked Sep 20, 2026
21	Elettrica B&c SRL	Partial evidence	Riese Pio X, ItalyHQ checked Sep 20, 2026	51-200	21 contacts →
	Partial evidence “Welcome to the B&C page, specialists in the design, cabling, installation and maintenance of industrial electric switchgear and power plants.” Source: RevenueBase Database · checked Sep 20, 2026
22	Medielettra DI Badalamenti Angelo & C. SAS	Indirect evidence	Casteldaccia, ItalyHQ checked Sep 20, 2026	11-50	21 contacts →
	Indirect evidence “Medielettra è un’azienda specializzata in progettazione, installazione e manutenzione di impianti elettrici, trasmissione dati, antintrusione, antincendio, domotica, solari…” Source: RevenueBase Database · checked Sep 20, 2026
23	Orefice Generators	Indirect evidence	San Sperate, ItalyHQ checked Sep 20, 2026	11-50	20 contacts →
	Indirect evidence “Orefice proudly carries forward its long family tradition in the electro-mechanical sector that dates back to the '30s.” Source: RevenueBase Database · checked Sep 20, 2026
24	Genmac Generators	Partial evidence	Gualtieri, ItalyHQ checked Sep 20, 2026	201-500	19 contacts →
	Partial evidence “Power Generators from 2kVA up to Hybrid solutions and Lighting tower.” Source: RevenueBase Database · checked Sep 20, 2026
25	F.Lli Franchini SRL	Indirect evidence	Rimini, ItalyHQ checked Sep 20, 2026	11-50	17 contacts →
	Indirect evidence “F.lli Franchini nasce con il settore degli impianti elettrici civili.” Source: RevenueBase Database · checked Sep 20, 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: on-site power generation 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 on-site power generation companies.
Partial evidence: Its own public description names part of on-site power generation companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name on-site power generation 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 428 on-site power generation companies based in Italy

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On-site power generation companies based in Italy at a glance

As of Sep 20, 2026

22.4%Verified-email coverage

8.7Average contacts per company

11-50Median size (employees)

2.1%Largest-city concentration · Milan

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

161

11-50

201

51-200

201-500

501-1,000

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 428 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 on-site power generation 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 “on-site power generation 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 on-site power generation 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 on-site power generation 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, 834 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 20, 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 on-site power generation 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 on-site power generation companies are there based in Italy?

RevenueBase identified 428 on-site power generation 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?

STE Energy, headquartered in Padova, tops this list with the largest team on record.

Which city has the most on-site power generation companies?

Milan leads with 9 headquartered companies, followed by Roma (9) and Torino (8).

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 834 verified decision-maker contacts tracked across these 428 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 20, 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.