Company lists · Data refreshed September 2026

Top 14 Grid integration companies based in Greece

RevenueBase identified 50 grid integration companies headquartered in Greece as of September 2026 and tracks 410 professional contacts across them, including 154 with verified work emails. Athens is the largest hub.

This list covers grid integration companies headquartered in Greece, 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
50Companies
410Contacts tracked
154Verified emails
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The 14 largest grid integration companies based in Greece

Ranked by team size
Top 14 of 50 grid integration companies based in Greece, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to grid integration 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceChalandri, GreeceHQ checked Sep 20, 202651-200102 contacts →

Indirect evidence

“PROTASIS Engineering & Consulting, headquartered in Athens, Greece was established in 2002 operating in the wider HV and MV energy generation, transmission and distribution…”

Source: RevenueBase Database · checked Sep 20, 2026
2Indirect evidenceKallithea, GreeceHQ checked Sep 20, 202651-20031 contacts →

Indirect evidence

“Entec Contractors S.A, a member of the Entec Group, is an Engineering, Procurement and Construction (EPC) company for the energy and digital transition.”

Source: RevenueBase Database · checked Sep 20, 2026
3Partial evidenceMarousi, GreeceHQ checked Sep 20, 202611-5014 contacts →

Partial evidence

“Gecko Power Solutions is an engineering and consulting company specialized in Power Grids, HV & MV Substations, Power Generation and Industry projects.”

Source: RevenueBase Database · checked Sep 20, 2026
4Indirect evidenceGreeceHQ checked Sep 20, 20261-1014 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 20, 2026
5Indirect evidenceThessaloniki, GreeceHQ checked Sep 20, 202611-5014 contacts →

Indirect evidence

“ESTIA Consulting and Engineering - based in Thessaloniki - is active on development, licensing and engineering of RES projects.”

Source: RevenueBase Database · checked Sep 20, 2026
6Indirect evidenceThessaloniki, GreeceHQ checked Sep 20, 202611-5011 contacts →

Indirect evidence

“Optimems, a spin-off of the Centre for Research and Technology Hellas (CERTH), Greece's foremost research institution, stands at the vanguard of innovative energy management…”

Source: RevenueBase Database · checked Sep 20, 2026
7Indirect evidenceLykovrysi, GreeceHQ checked Sep 20, 202611-509 contacts →

Indirect evidence

“Inovtech Engineering & Consulting provides diverse specialist services to renewable energy & power generation developers & contractors, distribution & transmission utilities, and…”

Source: RevenueBase Database · checked Sep 20, 2026
8Indirect evidenceIoannina, GreeceHQ checked Sep 20, 202611-509 contacts →

Indirect evidence

“Η ALESCO είναι μία εταιρεία ολοκληρωμένων ενεργειακών λύσεων με εξειδίκευση στα φωτοβολταϊκά συστήματα, την αποθήκευση ενέργειας, την ενεργειακή αναβάθμιση κτιρίων και τις…”

Source: RevenueBase Database · checked Sep 20, 2026
9Indirect evidenceGlyka Nera, GreeceHQ checked Sep 20, 202611-509 contacts →

Indirect evidence

“ENERDIA is a Greek company, established in 2010 by distinguished engineers in order to provide consulting technical services and complete Electro-mechanical solutions and turn-key…”

Source: RevenueBase Database · checked Sep 20, 2026
10Indirect evidenceThessaloniki, GreeceHQ checked Sep 20, 20261-106 contacts →

Indirect evidence

“ARIGNOTI Engineering founded in 2021, has already developed extensive expertise in industrial and energy generation projects, combining project design and engineering with…”

Source: RevenueBase Database · checked Sep 20, 2026
11Indirect evidenceAthens, GreeceHQ checked Sep 20, 202611-506 contacts →

Indirect evidence

“ARServices is a leading company on renewable applications and innovation.”

Source: RevenueBase Database · checked Sep 20, 2026
12Indirect evidencePeania, GreeceHQ checked Sep 20, 202611-505 contacts →

Indirect evidence

“Ether is a trustworthy and dynamic company, aiming at the energy sector.”

Source: RevenueBase Database · checked Sep 20, 2026
13Indirect evidenceAthens, GreeceHQ checked Sep 20, 202611-505 contacts →

Indirect evidence

“GreenValue S.A.”

Source: RevenueBase Database · checked Sep 20, 2026
14Indirect evidenceAthens, GreeceHQ checked Sep 20, 202611-505 contacts →

Indirect evidence

“SYNERGIA TECHNICAL AND CONSULTING S.A was established a decade ago, within a period of great financial constraint and depression in Greece, as an effort of our founders to combine…”

Source: RevenueBase Database · checked Sep 20, 2026

Showing 14 of 50 grid integration companies based in Greece

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Grid integration companies based in Greece at a glance

As of Sep 20, 2026
37.6%Verified-email coverage
8.2Average contacts per company
1-10Median size (employees)
28.0%Largest-city concentration · Athens
Sep 20, 2026Page data refreshed

Companies by employee count

1-10
26
11-50
19
51-200
5

Email recency for this list is measured worldwide rather than for Greece, so it is reported there. Company counts and contact totals on this page are exact for Greece, over 50 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 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 Greece whose own description of what they do matches “grid integration 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 grid integration 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 grid integration companies, and records with no verified work email. Companies headquartered outside Greece 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, 154 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 grid integration 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 grid integration companies are there based in Greece?

RevenueBase identified 50 grid integration companies headquartered in Greece 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?

Protasis SA, headquartered in Athens, tops this list with the largest team on record.

Which city has the most grid integration companies?

Athens leads with 14 headquartered companies, followed by Patras (2) and Thessaloniki (2).

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 154 verified decision-maker contacts tracked across these 50 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.