Company lists · Data refreshed September 2026

Top 25 Solar consulting companies based in Italy

Name: Solar consulting companies based in Italy
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 30, 2026 1,398 companies tracked

RevenueBase identified 1,398 company matches for solar consulting companies associated with Italy as of September 2026 and tracks 9,818 professional contacts across them, including 2,445 with verified work emails. Milan is the largest hub.

This list covers company matches for solar consulting companies associated with Italy, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 30, 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 RevenueBase SmartSearch · Exact Recorded Sep 30, 2026 How this list was built

1,398Companies

9,818Contacts tracked

2,445Verified emails

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The 25 largest solar consulting companies based in Italy

Ranked by team size

Top 25 of 1,398 company matches for solar consulting companies based in Italy, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 30, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Stern Energy	Exact match	Parma, ItalyHQ recorded Sep 30, 2026	201-500	205 contacts →
	Exact match “Stern Energy, founded in 2008, is an Italy-based company specialized in technical services for photovoltaic plants and BESS systems.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
2	STE Energy	Exact match	Padua, ItalyHQ recorded Sep 30, 2026	51-200	194 contacts →
	Exact match “Since June 2025, STE Energy has been acquired by, becoming part of the world.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
3	NBI SPA	Exact match	Bologna, ItalyHQ recorded Sep 30, 2026	501-1,000	184 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
4	Espe S.P.A	Exact match	Grantorto, ItalyHQ recorded Sep 30, 2026	51-200	144 contacts →
	Exact match “Know-how, experience, reliability, innovation.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
5	Algowatt	Exact match	Milan, ItalyHQ recorded Sep 30, 2026	n/a	137 contacts →
	Exact match “TerniEnergia is active in the energies from renewable sources business, particularly in the photovoltaic segment, where it operates as a system integrator.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
6	Greenergy	Exact match	Castellaneta, ItalyHQ recorded Sep 30, 2026	51-200	99 contacts →
	Exact match “Non siamo tecnici, ma progettisti consapevoli di essere parte del cambiamento.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
7	KEY To Energy	Exact match	Rome, ItalyHQ recorded Sep 30, 2026	51-200	94 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
8	PEF SPA	Exact match	Barberino Tavarnelle, ItalyHQ recorded Sep 30, 2026	11-50	93 contacts →
	Exact match “PEF SpA nasce a Firenze nel 2006, iniziando ad operare nel settore delle energie rinnovabili, con la commercializzazione su tutto il territorio nazionale di impianti fotovoltaici…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
9	A3sprogetti	Exact match	Pescara, ItalyHQ recorded Sep 30, 2026	11-50	78 contacts →
	Exact match “servizi di progettazione integrata, risparmio energetico, analisi energetiche finalizzate all'energy saving impianti termici impianti elettrici energie alternative.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
10	Sunnerg Group	Exact match	Milan, ItalyHQ recorded Sep 30, 2026	51-200	69 contacts →
	Exact match “WHO WE ARE SUNNERG is General Contractor and Service Provider specializing in "turnkey projects" in the 'Energy & Facility Management B2B market, with a particular focus on the PV…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
11	Lenergy SPA	Exact match	Fornacette, ItalyHQ recorded Sep 30, 2026	51-200	68 contacts →
	Exact match “In Lenergy, acceleriamo la transizione verso l'indipendenza energetica per famiglie e imprese.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
12	Unoenergy Green Solutions SPA	Exact match	Cascina, ItalyHQ recorded Sep 30, 2026	201-500	63 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
13	Saccir S.P.A	Exact match	Rome, ItalyHQ recorded Sep 30, 2026	201-500	61 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
14	Connecto	Exact match	Milan, ItalyHQ recorded Sep 30, 2026	11-50	59 contacts →
	Exact match “Connecto è una società indipendente di servizi di consulenza e di vendita di soluzioni energetiche integrate che opera con due principi: visione prospettica e prossimità al…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
15	Energy Italy	Exact match	Costermano Sul Garda, ItalyHQ recorded Sep 30, 2026	11-50	59 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
16	Inergia S.P.A	Exact match	Rome, ItalyHQ recorded Sep 30, 2026	11-50	53 contacts →
	Exact match “Inergia was founded in 2003 with the strategic diversification of the Santarelli group, a leader in Italy’s real estate industry.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
17	TEN Project	Exact match	San Martino Sannita, ItalyHQ recorded Sep 30, 2026	11-50	52 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
18	Open Project	Exact match	Bologna, ItalyHQ recorded Sep 30, 2026	11-50	51 contacts →
	Exact match “Open Project S.r.l.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
19	GIN Group	Exact match	Milan, ItalyHQ recorded Sep 30, 2026	n/a	47 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
20	Green Horse Advisory	Exact match	Milan, ItalyHQ recorded Sep 30, 2026	11-50	45 contacts →
	Exact match “Green Horse, acronym for GREEN HORizon for a Sustainable Economy, is an advisory project dedicated exclusively to the energy transition industry with particular attention to…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
21	Sky-Nrg	Exact match	Castiglione Delle Stiviere, ItalyHQ recorded Sep 30, 2026	51-200	43 contacts →
	Exact match “We turn the complexity of the energy transition into reliable, high-performance infrastructure built to last.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
22	Oempv S.R.L	Exact match	Rovigo, ItalyHQ recorded Sep 30, 2026	51-200	43 contacts →
	Exact match “OEMpv nasce nel 2010 dall’esigenza sempre maggiore di fare manutenzione agli impianti fotovoltaici di media e grande dimensione.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
23	Gaia Energy Systems	Exact match	Gricignano Di Aversa, ItalyHQ recorded Sep 30, 2026	11-50	43 contacts →
	Exact match “Gaia Energy Systems opera da anni nei settori delle energie rinnovabili e dell’efficientamento energetico, sia al fianco di aziende che di privati.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
24	Samso SPA	Exact match	Milan, ItalyHQ recorded Sep 30, 2026	11-50	42 contacts →
	Exact match “OGNI GIORNO AIUTIAMO LE AZIENDE A DIVENTARE PIÙ EFFICIENTI, A RIDURRE I CONSUMI, A GENERARE AUTONOMAMENTE L’ENERGIA PULITA IN GRADO DI SODDISFARE IL PROPRIO FABBISOGNO.” Il nostro…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
25	Hydroalp	Exact match	Costa Volpino, ItalyHQ recorded Sep 30, 2026	51-200	39 contacts →
	Exact match “Founded in 2015, in just a few years Hydroalp has gained a prominent position in the market for the construction of hydroelectric turbines, water-to-wire hydropower plants, green…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “solar consulting companies”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 1,398 solar consulting companies based in Italy

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Solar consulting companies based in Italy at a glance

As of Sep 30, 2026

24.9%Verified-email coverage

7.0Average contacts per company

1-10Median size (employees)

6.2%Largest-city concentration · Milan

Sep 30, 2026Page data refreshed

Companies by employee count

1-10

837

11-50

462

51-200

201-500

501-1,000

1,001-5,000

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 1,398 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

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: Company records associated with Italy whose business descriptions match “solar consulting companies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 2,445 professional contacts with verified work emails across the full matched dataset. 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 30, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Solar consulting companies by metro

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “solar consulting companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many solar consulting companies are there based in Italy?

RevenueBase identified 1,398 company matches for solar consulting companies associated with Italy as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Stern Energy tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most solar consulting companies?

Milan leads with 87 company records, followed by Rome (84) and Turin (33).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 2,445 professional contacts with verified work emails tracked across these 1,398 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 30, 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 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.