Company lists · Data refreshed September 2026

Top 25 Renewable energy optimization software based in Greece

Name: Renewable energy optimization software based in Greece
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 5, 2026 89 companies tracked

RevenueBase identified 89 renewable energy optimization software headquartered in Greece as of September 2026 and tracks 590 professional contacts across them, including 192 with verified work emails and 10 with mobile numbers. Athens is the largest hub.

This list covers renewable energy optimization software 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, how directly it supports the match, and when it was last checked. Data refreshed September 5, 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 HQ checked on every row Match evidence on every row Refreshed Sep 5, 2026 86% judged on-target in blind review

89Companies

590Contacts tracked

192Verified emails

10Mobile numbers

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The 25 largest renewable energy optimization software based in Greece

Ranked by team size

Top 25 of 89 renewable energy optimization software based in Greece, ranked by team size, largest first. Data refreshed Sep 5, 2026. Evidence rates how directly each company's own description names renewable energy optimization software: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	I4energyStrong evidence	Athens, GreeceHQ checked Sep 5, 2026	11-50	39
	“i4energy is an established energy technology company based in Greece, developing field-proven energy management software solutions for Power Producers, Aggregators, Large…” Source: company website · checked Sep 5, 2026
2	Entec Contractors S.A. GRPartial evidence	Kallithea, GreeceHQ checked Sep 5, 2026	51-200	31
	“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: company website · checked Sep 5, 2026
3	Survey Digital PhotovoltaicsIndirect evidence	Gerakas, GreeceHQ checked Sep 5, 2026	51-200	27
	“Survey Digital Photovoltaics is a vertically integrated company of approx.” Source: company website · checked Sep 5, 2026
4	Airenergy SAPartial evidence	Agia Paraskevi, GreeceHQ checked Sep 5, 2026	11-50	24
	“AirEnergy S.A, was established in 2008, leads to energy transition towards a sustainable future in Greece.” Source: company website · checked Sep 5, 2026
5	CalpakIndirect evidence	Piraeus, GreeceHQ checked Sep 5, 2026	51-200	17
	“Calpak is renowned for its wealth of technical expertise and heritage in groundbreaking R&D.” Source: company website · checked Sep 5, 2026
6	Irida A.I. TechnologiesIndirect evidence	Athens, GreeceHQ checked Sep 5, 2026	11-50	16
	“IRIDA A.I.” Source: company website · checked Sep 5, 2026
7	Estia Consulting & Engineering SAIndirect evidence	Thessaloniki, GreeceHQ checked Sep 5, 2026	11-50	14
	“ESTIA Consulting and Engineering - based in Thessaloniki - is active on development, licensing and engineering of RES projects.” Source: company website · checked Sep 5, 2026
8	OptimemsPartial evidence	Thessaloniki, GreeceHQ checked Sep 5, 2026	11-50	11
	“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: company website · checked Sep 5, 2026
9	Engaia S.AIndirect evidence	Sindos, GreeceHQ checked Sep 5, 2026	11-50	10
	Source: company website · checked Sep 5, 2026
10	StellarblueStrong evidence	Kalamariá, GreeceHQ checked Sep 5, 2026	11-50	9
	“StellarBlue is a leading software company dedicated to pioneering advanced solutions for the energy sector.” Source: company website · checked Sep 5, 2026
11	InovtechStrong evidence	Lykovrysi, GreeceHQ checked Sep 5, 2026	11-50	9
	“Inovtech Engineering & Consulting provides diverse specialist services to renewable energy & power generation developers & contractors, distribution & transmission utilities, and…” Source: company website · checked Sep 5, 2026
12	EnerdiaPartial evidence	Glyka Nera, GreeceHQ checked Sep 5, 2026	11-50	9
	“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: company website · checked Sep 5, 2026
13	Alesco SAIndirect evidence	Ioannina, GreeceHQ checked Sep 5, 2026	11-50	9
	“Η ALESCO είναι μία εταιρεία ολοκληρωμένων ενεργειακών λύσεων με εξειδίκευση στα φωτοβολταϊκά συστήματα, την αποθήκευση ενέργειας, την ενεργειακή αναβάθμιση κτιρίων και τις…” Source: company website · checked Sep 5, 2026
14	Encircle Energy SpecialistsPartial evidence	Pefka, GreeceHQ checked Sep 5, 2026	11-50	8
	“Encircle Energy Specialists: Empowering Tomorrow's Sustainability with Ambitious Engineers Welcome to Encircle Energy Specialists, where we're on a mission to drive positive…” Source: company website · checked Sep 5, 2026
15	SolarwayStrong evidence	Kalamata, GreeceHQ checked Sep 5, 2026	1-10	7
	“Since 2009, SolarWay has been the leading company in Messinia, offering complete energy saving solutions, utilizing Renewable Energy Sources.” Source: company website · checked Sep 5, 2026
16	Megva EnergyStrong evidence	Thessaloniki, GreeceHQ checked Sep 5, 2026	11-50	6
	“MEGVA Energy, an ISO 9001:2015, ISO 45001:2018, ISO 14001:2015 certified company, is a leading innovator in the renewable energy sector.” Source: company website · checked Sep 5, 2026
17	Promitheas Energy GroupStrong evidence	Thessaloniki, GreeceHQ checked Sep 5, 2026	1-10	6
	“Promitheas Energy Groups' team of experts has significant experience in the field of Renewable Energy Sources, supporting efficiently a wide workflow framework, from land scouting…” Source: company website · checked Sep 5, 2026
18	ArservicesPartial evidence	Athens, GreeceHQ checked Sep 5, 2026	11-50	6
	“ARServices is a leading company on renewable applications and innovation.” Source: company website · checked Sep 5, 2026
19	Ether ApplicationsPartial evidence	Peania, GreeceHQ checked Sep 5, 2026	11-50	5
	“Ether is a trustworthy and dynamic company, aiming at the energy sector.” Source: company website · checked Sep 5, 2026
20	Green ValueIndirect evidence	Athens, GreeceHQ checked Sep 5, 2026	11-50	5
	“GreenValue S.A.” Source: company website · checked Sep 5, 2026
21	Synergia Technical & Investment Consultant SAIndirect evidence	Athens, GreeceHQ checked Sep 5, 2026	11-50	5
	“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: company website · checked Sep 5, 2026
22	Greentop Energy Systems S.AIndirect evidence	Athens, GreeceHQ checked Sep 5, 2026	11-50	3
	Source: company website · checked Sep 5, 2026
23	Iwind Renewables S.AStrong evidence	Gerakas, GreeceHQ checked Sep 5, 2026	1-10	3
	“iWind Renewables is a consulting company based in Greece, founded by professionals with advanced knowledge and experience in renewable energy technologies, involved in the design…” Source: company website · checked Sep 5, 2026
24	PV SolutionsPartial evidence	Koufalia, GreeceHQ checked Sep 5, 2026	1-10	3
	“The Company Our company differs in the energy sector.” Source: company website · checked Sep 5, 2026
25	ZephirosStrong evidence	Marousi, GreeceHQ checked Sep 5, 2026	51-200	2
	“The Zephiros Group began its journey in 1997 with the establishment of Zephiros Ltd, laying a solid foundation for our enduring commitment to renewable energy.” Source: company website · checked Sep 5, 2026

Showing 25 of 89 renewable energy optimization software based in Greece

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Renewable energy optimization software based in Greece at a glance

As of Sep 5, 2026

11-50Median size (employees)

AthensLargest hub · 18 HQs

10Contacts with mobile numbers

Sep 5, 2026Data refreshed

Companies by employee count

1-10

11-50

51-200

Verified emails by last verification

0–30

183

31–60

61–90

90–180

180+

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 renewable energy optimization software, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Greece whose own description of what they do matches “renewable energy optimization software”. Matching reads each company's description, not its industry code or its name.
What we exclude: Companies whose own description does not clearly place them among renewable energy optimization software, 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 an evidence 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, 192 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 5, 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

How many renewable energy optimization software are there based in Greece?

RevenueBase identified 89 renewable energy optimization software 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?

I4energy, headquartered in Athens, tops this list with the largest team on record.

Which city has the most renewable energy optimization software?

Athens leads with 18 headquartered companies, followed by Marousi (3) and Alexandroupolis (1).

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 192 verified decision-maker contacts tracked across these 89 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 5, 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.