Company lists · Data refreshed September 2026

Top 25 Renewable energy IT service providers based in Hamburg, Germany

Name: Renewable energy IT service providers based in Hamburg, Germany
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 148 companies tracked

RevenueBase identified 148 renewable energy IT service providers headquartered in Hamburg, Germany as of September 2026 and tracks 3,713 professional contacts across them, including 1,493 with verified work emails. Berlin is the largest hub.

This list covers renewable energy IT service providers headquartered in Hamburg, Germany, 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 17, 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 17, 2026 86% judged on-target in blind review

148Companies

3,713Contacts tracked

1,493Verified emails

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The 25 largest renewable energy IT service providers based in Hamburg, Germany

Ranked by team size

Top 25 of 148 renewable energy IT service providers based in Hamburg, Germany, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to renewable energy IT service providers: 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	1komma5	Partial evidence	Hamburg, GermanyHQ checked Sep 17, 2026	1,001-5,000	897 contacts →
	Partial evidence “1KOMMA5° wurde gegründet um Millionen Gebäude in Europa klimaneutral immer mit dem günstigsten Strom zu versorgen - ganz ohne fossile Energie.” Source: RevenueBase Database · checked Sep 17, 2026
2	Lichtblick SE	Partial evidence	Hamburg, GermanyHQ checked Sep 17, 2026	501-1,000	449 contacts →
	Partial evidence “Here at LichtBlick, we create an excellent climate – with green energy for at home and on the move.” Source: RevenueBase Database · checked Sep 17, 2026
3	Akquinet	Partial evidence	Hamburg, GermanyHQ checked Sep 17, 2026	501-1,000	346 contacts →
	Partial evidence “We help companies set up their IT in a sustainable, secure, and future-proof way-from strategy and implementation to operation.” Source: RevenueBase Database · checked Sep 17, 2026
4	Enerparc AG	Strong evidence	Hamburg, GermanyHQ checked Sep 17, 2026	201-500	305 contacts →
	Strong evidence “ENERPARC AG is an internationally oriented specialist for all business related to photovoltaics, whether it's in a technical or commercial role, pure consultation or…” Source: RevenueBase Database · checked Sep 17, 2026
5	Rabot Energy	Partial evidence	Hamburg, GermanyHQ checked Sep 17, 2026	51-200	112 contacts →
	Partial evidence “Der Energieanbieter Rabot Energy macht es für jeden möglich, unkompliziert aktiver Teil der Energiewende zu werden.” Source: RevenueBase Database · checked Sep 17, 2026
6	Phat Consulting	Indirect evidence	Hamburg, GermanyHQ checked Sep 17, 2026	51-200	65 contacts →
	Indirect evidence “We are 89 people who rock digitalization and sustainability together.” Source: RevenueBase Database · checked Sep 17, 2026
7	Akra Gmbh	Partial evidence	Hamburg, GermanyHQ checked Sep 17, 2026	51-200	64 contacts →
	Partial evidence “We support small companies and large corporations in the areas of software development, IT infrastructure and IT project management.” Source: RevenueBase Database · checked Sep 17, 2026
8	Holisticon AG	Partial evidence	Hamburg, GermanyHQ checked Sep 17, 2026	51-200	60 contacts →
	Partial evidence “Holisticon is the boutique among the IT consultancies for digital transformation.” Source: RevenueBase Database · checked Sep 17, 2026
9	Fortis It-Services Gmbh	Partial evidence	Hamburg, GermanyHQ checked Sep 17, 2026	51-200	44 contacts →
	Partial evidence “FORTIS ist ein mittelständischer IT-Dienstleister mit Büros in Hamburg, Bielefeld, Wolfsburg, Berlin und Düsseldorf.” Source: RevenueBase Database · checked Sep 17, 2026
10	DAA Gmbh	Partial evidence	Hamburg, GermanyHQ checked Sep 17, 2026	51-200	42 contacts →
	Partial evidence “Die DAA GmbH bietet Saleslösungen für die Energiewende.” Source: RevenueBase Database · checked Sep 17, 2026
11	P&m Agentur Software Consulting	Indirect evidence	Hamburg, GermanyHQ checked Sep 17, 2026	51-200	42 contacts →
	Indirect evidence “In der rasanten digitalen Welt sind Customer Experience, technische Lösungen und intelligente Datennutzung entscheidend für den Geschäftserfolg.” Source: RevenueBase Database · checked Sep 17, 2026
12	MSP AG	Partial evidence	Hamburg, GermanyHQ checked Sep 17, 2026	51-200	41 contacts →
	Partial evidence “Die MSP AG ist ein Hamburger IT- und Softwareunternehmen mit Expertise in den Bereichen Entwicklung, Systemintegration, Prozessberatung und IT-Service.” Source: RevenueBase Database · checked Sep 17, 2026
13	Rbomnishore	Partial evidence	Hamburg, GermanyHQ checked Sep 17, 2026	51-200	40 contacts →
	Partial evidence “Wir sind RBOmnishore, IT-Beratung und Entwicklungstreiber für die digitale Zukunft des Handels und der Industrie.” Source: RevenueBase Database · checked Sep 17, 2026
14	EHA Energie-Handels-Gesellschaft MBH & Co. KG	Indirect evidence	Hamburg, GermanyHQ checked Sep 17, 2026	51-200	40 contacts →
	Indirect evidence “EHA wurde bereits 1998 als Joint Venture der damaligen Hamburgische Electricitäts-Werke AG (HEW) und der REWE Group gegründet.” Source: RevenueBase Database · checked Sep 17, 2026
15	Klimainvest Green Concepts Gmbh	Partial evidence	Hamburg, GermanyHQ checked Sep 17, 2026	11-50	35 contacts →
	Partial evidence “Klimalnvest is one of the leading full-service energy and climate protection agencies for municipal utilities and energy suppliers in Germany.” Source: RevenueBase Database · checked Sep 17, 2026
16	Sunnic Lighthouse Gmbh	Strong evidence	Hamburg, GermanyHQ checked Sep 17, 2026	51-200	34 contacts →
	Strong evidence “Whether for system operators, business customers or trading partners: Sunnic takes care of optimal marketing and supply structures for renewable energies.” Source: RevenueBase Database · checked Sep 17, 2026
17	Consulectra Gmbh	Partial evidence	Hamburg, GermanyHQ checked Sep 17, 2026	51-200	29 contacts →
	Partial evidence “Since more than 45 years we have been supporting as a leading consulting and planning office customers primarily from the energy sector.” Source: RevenueBase Database · checked Sep 17, 2026
18	8.2 Obst & Hamm Gmbh	Indirect evidence	Hamburg, GermanyHQ checked Sep 17, 2026	11-50	29 contacts →
	Indirect evidence “8.2 Obst & Hamm GmbH was founded in 2003 and is part of the 8.2 group which traces back to 1995.” Source: RevenueBase Database · checked Sep 17, 2026
19	HBT	Indirect evidence	Hamburg, GermanyHQ checked Sep 17, 2026	51-200	28 contacts →
	Indirect evidence “HBT Hamburger Berater Team is a company based out of STADTHAUSBRÜCKE 3, Hamburg, Germany.” Source: RevenueBase Database · checked Sep 17, 2026
20	Tuleva AG	Indirect evidence	Hamburg, GermanyHQ checked Sep 17, 2026	51-200	27 contacts →
	Indirect evidence “Wir können digitale Zukunft!” Source: RevenueBase Database · checked Sep 17, 2026
21	Ison Gmbh	Partial evidence	Hamburg, GermanyHQ checked Sep 17, 2026	11-50	24 contacts →
	Partial evidence “With the most advanced Energy as a Service solution, we seamlessly connect our partners and their products to the energy market unlocking the flex potential of decentralized…” Source: RevenueBase Database · checked Sep 17, 2026
22	Elbe1 Renewable Energy Advisors	Indirect evidence	Hamburg, GermanyHQ checked Sep 17, 2026	11-50	22 contacts →
	Indirect evidence “As a member of the SeaRenergy group, headquartered in Hamburg, Germany, Elbe1 is a leading consultancy specialized in the development and construction of offshore wind and…” Source: RevenueBase Database · checked Sep 17, 2026
23	Btdynamics Gmbh	Indirect evidence	Hamburg, GermanyHQ checked Sep 17, 2026	11-50	20 contacts →
	Indirect evidence “Wir sind immer auf der Suche nach dynamischen und engagierten Mitarbeitern - Jetzt Stellenangebote entdecken: Seit 1993 sind wir in Hamburg Lösungsfinder und persönlicher…” Source: RevenueBase Database · checked Sep 17, 2026
24	Soft-Park Gmbh	Partial evidence	Hamburg, GermanyHQ checked Sep 17, 2026	11-50	19 contacts →
	Partial evidence “IT with a We.” Source: RevenueBase Database · checked Sep 17, 2026
25	Green Planet Projects Gmbh	Partial evidence	Hamburg, GermanyHQ checked Sep 17, 2026	11-50	18 contacts →
	Partial evidence “Wir - die Green Planet Projects GmbH (früher: Planet energy GmbH)- sind eine 100%ige Tochter der Green Planet Energy eG, einer der größten Energiegenossenschaften Deutschlands.” Source: RevenueBase Database · checked Sep 17, 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: renewable energy IT service providers. 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 renewable energy IT service providers.
Partial evidence: Its own public description names part of renewable energy IT service providers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name renewable energy IT service providers. 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 148 renewable energy IT service providers based in Hamburg, Germany

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Renewable energy IT service providers based in Hamburg, Germany at a glance

As of Sep 17, 2026

40.2%Verified-email coverage

25.1Average contacts per company

11-50Median size (employees)

143.2%Largest-city concentration · Berlin

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

Email recency for this list is measured across the whole Germany list rather than for Hamburg, so it is reported there. Company counts and contact totals on this page are exact for Hamburg, over 148 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 renewable energy IT service providers, 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 Hamburg, Germany whose own description of what they do matches “renewable energy IT service providers”. 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 renewable energy IT service providers), 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 renewable energy IT service providers, and records with no verified work email. Companies headquartered outside Hamburg 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, 1,493 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 17, 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.

Renewable energy IT service providers by metro in Germany

Renewable energy IT service providers in Berlin212
Renewable energy IT service providers in Hamburg148
Renewable energy IT service providers in Dusseldorf64
Renewable energy IT service providers in Munchen64
Renewable energy IT service providers in Munich54
Renewable energy IT service providers in Koln41
Renewable energy IT service providers in Bremen40
Renewable energy IT service providers in Frankfurt Am Main33
Renewable energy IT service providers in Stuttgart33
Renewable energy IT service providers in Leipzig31
Renewable energy IT service providers in Hannover28
Renewable energy IT service providers in Dresden26
Renewable energy IT service providers in Essen25

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 renewable energy IT service providers, 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 renewable energy IT service providers are there based in Hamburg, Germany?

RevenueBase identified 148 renewable energy IT service providers headquartered in Hamburg, Germany 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?

1komma5, headquartered in Hamburg, tops this list with the largest team on record.

Which city has the most renewable energy IT service providers?

Berlin leads with 212 headquartered companies, followed by Hamburg (148) and Dusseldorf (64).

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 1,493 verified decision-maker contacts tracked across these 148 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 17, 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.