Company lists · Data refreshed September 2026

Top 25 Grid integration system designers based in Italy

Name: Grid integration system designers based in Italy
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 1,024 companies tracked

RevenueBase identified 1,024 grid integration system designers headquartered in Italy as of September 2026 and tracks 8,682 professional contacts across them, including 2,095 with verified work emails. Roma is the largest hub.

This list covers grid integration system designers 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 19, 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 19, 2026 86% judged on-target in blind review

1,024Companies

8,682Contacts tracked

2,095Verified emails

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The 25 largest grid integration system designers based in Italy

Ranked by team size

Top 25 of 1,024 grid integration system designers based in Italy, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to grid integration system designers: 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	Gridspertise	Indirect evidence	Rome, ItalyHQ checked Sep 19, 2026	201-500	291 contacts →
	Indirect evidence “The partner of choice for DSOs worldwide.” Source: RevenueBase Database · checked Sep 19, 2026
2	APS	Indirect evidence	Rome, ItalyHQ checked Sep 19, 2026	201-500	214 contacts →
	Indirect evidence “APS was founded in 1997 in Rome, Italy, and became part of the MAIRE Group on July 30th, 2024, following its acquisition by KT – Kinetics Technology.” Source: RevenueBase Database · checked Sep 19, 2026
3	STE Energy	Indirect evidence	Padova, ItalyHQ checked Sep 19, 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 19, 2026
4	NBI SPA	Indirect evidence	Bologna, ItalyHQ checked Sep 19, 2026	501-1,000	184 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 19, 2026
5	Espe S.P.A	Indirect evidence	Grantorto, ItalyHQ checked Sep 19, 2026	51-200	144 contacts →
	Indirect evidence “Know-how, experience, reliability, innovation.” Source: RevenueBase Database · checked Sep 19, 2026
6	Siel S.P.A	Indirect evidence	Trezzano Rosa, ItalyHQ checked Sep 19, 2026	51-200	100 contacts →
	Indirect evidence “In its current structure, Siel Group is a holding company deeply rooted in a world-class economic, technological, and cultural context.” Source: RevenueBase Database · checked Sep 19, 2026
7	KEY To Energy	Indirect evidence	Roma, ItalyHQ checked Sep 19, 2026	51-200	94 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 19, 2026
8	A3sprogetti	Indirect evidence	Pescara, ItalyHQ checked Sep 19, 2026	11-50	78 contacts →
	Indirect evidence “servizi di progettazione integrata, risparmio energetico, analisi energetiche finalizzate all'energy saving impianti termici impianti elettrici energie alternative.” Source: RevenueBase Database · checked Sep 19, 2026
9	Unoenergy Green Solutions SPA	Indirect evidence	Cascina, ItalyHQ checked Sep 19, 2026	201-500	63 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 19, 2026
10	Saccir S.P.A	Indirect evidence	Roma, ItalyHQ checked Sep 19, 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 19, 2026
11	Energy Italy	Indirect evidence	Costermano Sul Garda, ItalyHQ checked Sep 19, 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 19, 2026
12	Inergia S.P.A	Indirect evidence	Rome, ItalyHQ checked Sep 19, 2026	11-50	53 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 19, 2026
13	TEN Project	Indirect evidence	San Martino Sannita, ItalyHQ checked Sep 19, 2026	11-50	52 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 19, 2026
14	Braga Group	Indirect evidence	Agrate Brianza, ItalyHQ checked Sep 19, 2026	51-200	47 contacts →
	Indirect evidence “Braga Group: il tuo partner per la transizione energetica.” Source: RevenueBase Database · checked Sep 19, 2026
15	GIN Group	Indirect evidence	Milano, ItalyHQ checked Sep 19, 2026	n/a	47 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 19, 2026
16	Energy S.P.A	Indirect evidence	Sant'angelo Di Piove Di Sacco, ItalyHQ checked Sep 19, 2026	51-200	44 contacts →
	Indirect evidence “Energy was founded in 2013 with a dream: make clean energy accessible to everyone, and at any time of day.” Source: RevenueBase Database · checked Sep 19, 2026
17	Comef S.R.L	Partial evidence	Tradate, ItalyHQ checked Sep 19, 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 19, 2026
18	Gaia Energy Systems	Partial evidence	Gricignano Di Aversa, ItalyHQ checked Sep 19, 2026	11-50	43 contacts →
	Partial 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 19, 2026
19	Samso SPA	Indirect evidence	Milano, ItalyHQ checked Sep 19, 2026	11-50	42 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 19, 2026
20	Hydroalp	Indirect evidence	Costa Volpino, ItalyHQ checked Sep 19, 2026	51-200	39 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 19, 2026
21	Fichtner Italia	Indirect evidence	Genova, ItalyHQ checked Sep 19, 2026	11-50	38 contacts →
	Indirect evidence “Fichtner Italia è una società indipendente, appartenente al Gruppo Fichtner, attiva sin dalla data di fondazione nel fornire servizi di consulenza di ingegneria a gruppi…” Source: RevenueBase Database · checked Sep 19, 2026
22	Espiù S.R.L. Società Benefit	Indirect evidence	Oderzo, ItalyHQ checked Sep 19, 2026	51-200	38 contacts →
	Indirect evidence “EsPiù S.r.l.\| Società Benefit è una Società di Ingegneria, operante nell'ambito della progettazione e consulenza energetica in particolar modo ad industrie, settore terziario…” Source: RevenueBase Database · checked Sep 19, 2026
23	Forgreen SPA	Partial evidence	Verona, ItalyHQ checked Sep 19, 2026	11-50	37 contacts →
	Partial evidence “ForGreen Group was born by the great experience in renewable energy business and cogeneration system of Multiutility.” Source: RevenueBase Database · checked Sep 19, 2026
24	Sunsolution SRL	Indirect evidence	Fontevivo, ItalyHQ checked Sep 19, 2026	11-50	33 contacts →
	Indirect evidence “Siamo il partner strategico per aziende, ESCo e IPP che ricercano soluzioni energetiche bancabili, performanti e orientate alla generazione di valore nel tempo.” Source: RevenueBase Database · checked Sep 19, 2026
25	Renergetica	Partial evidence	Genova, ItalyHQ checked Sep 19, 2026	11-50	33 contacts →
	Partial evidence “Renergetica was founded in 2008 with the aim of becoming one of the main professional developers of renewables energy projects and hybrid grids.” Source: RevenueBase Database · checked Sep 19, 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: grid integration system designers. 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 grid integration system designers.
Partial evidence: Its own public description names part of grid integration system designers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name grid integration system designers. 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 1,024 grid integration system designers based in Italy

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Grid integration system designers based in Italy at a glance

As of Sep 19, 2026

24.1%Verified-email coverage

8.5Average contacts per company

1-10Median size (employees)

4.5%Largest-city concentration · Roma

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

524

11-50

399

51-200

201-500

501-1,000

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 1,024 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 grid integration system designers, 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 “grid integration system designers”. 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 grid integration system designers), 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 grid integration system designers, 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, 2,095 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 19, 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.

Grid integration system designers by metro

Grid integration system designers in Roma46
Grid integration system designers in Milan26

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 grid integration system designers, 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 grid integration system designers are there based in Italy?

RevenueBase identified 1,024 grid integration system designers 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?

Gridspertise, headquartered in Rome, tops this list with the largest team on record.

Which city has the most grid integration system designers?

Roma leads with 46 headquartered companies, followed by Milan (26) and Milano (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 2,095 verified decision-maker contacts tracked across these 1,024 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 19, 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.