Company lists · Data refreshed September 2026
Top 25 Energy consultants based in Hamburg, Germany
RevenueBase identified 119 energy consultants headquartered in Hamburg, Germany as of September 2026 and tracks 982 professional contacts across them, including 421 with verified work emails. Berlin is the largest hub.
This list covers energy consultants 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 15, 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.
The 25 largest energy consultants based in Hamburg, Germany
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 70 contacts → | ||||
Indirect evidence “We are visionaries and engineers, generalists and specialists.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 2 | 42 contacts → | ||||
Partial evidence “Die DAA GmbH bietet Saleslösungen für die Energiewende.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 3 | 41 contacts → | ||||
Partial evidence “Als Problemlöser und Beschleuniger für die Energiewende leisten wir unseren Beitrag als kreativer und kompetenter Partner.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 4 | 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 15, 2026Thanks. The Data Team will review it. | |||||
| 5 | 39 contacts → | ||||
Partial evidence “encentive helps industrial companies reduce energy costs and CO₂ emissions.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 6 | 33 contacts → | ||||
Indirect evidence “SCI Verkehr is an independent consulting firm that is specialized on traffic economy and traffic engineering.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 7 | 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 15, 2026Thanks. The Data Team will review it. | |||||
| 8 | 29 contacts → | ||||
Partial evidence “RENEWA ist dein unabhängiger Partner für energetische Sanierung.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 9 | 29 contacts → | ||||
Partial evidence “Die Ingenion GmbH mit Sitz in Hamburg ist ein Ingenieurbüro, das seit 20 Jahren erfolgreich in den Bereichen Energie, Luftfahrt und Anlagenbau tätig ist.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 10 | 28 contacts → | ||||
Partial evidence “Das Hamburg Institut ist eine Strategieberatung für eine erfolgreiche Energiewende.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 11 | 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 15, 2026Thanks. The Data Team will review it. | |||||
| 12 | 22 contacts → | ||||
Partial 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 15, 2026Thanks. The Data Team will review it. | |||||
| 13 | 20 contacts → | ||||
Partial evidence “8.2 Renewable Energy Experts Hamburg GmbH is part of the 8.2 Group - one of the leading independent renewable energy experts in Germany and Europe with more than MWp solar PV…” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 14 | 18 contacts → | ||||
Partial evidence “Consulting businesses on Energy Efficiency and Renewable Energy UN Sustainable Development Goals and International Cooperation Envidatec offers consulting services on all things…” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 15 | 17 contacts → | ||||
Indirect evidence “Die REESE Ingenieure GmbH & Co.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 16 | 16 contacts → | ||||
Partial evidence “CBR Sustainability Partners is a pioneering consultancy dedicated to advancing green transition through technological innovation and sustainable practices across various…” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 17 | 15 contacts → | ||||
Partial evidence “cervacon ist eine Beratungs-Boutique mit klarer Ausrichtung: Wir beraten und begleiten Führungskräfte der Energiewirtschaft bei der strategischen und operativen Ausrichtung ihrer…” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 18 | 15 contacts → | ||||
Partial evidence “Wir engagieren uns für die Realisierung der Energiewende und konzentrieren uns darauf, aus komplexen Zusammenhängen erfolgreiche Projekte zu machen.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 19 | 14 contacts → | ||||
Partial evidence “Die E1 Management Consulting GmbH mit Sitz in Hamburg ist eine auf die Energiewirtschaft spezialisierte deutsche Unternehmensberatung.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 20 | 13 contacts → | ||||
Partial evidence “h2 supports its clients in optimizing and classifying project concepts within the framework of the energy system of the future.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 21 | 10 contacts → | ||||
Indirect evidence “Wir bieten Beratung, Analyse, Planung, Controlling und Bauüberwachung für die Anlagen der Technischen Ausrüstung und Sondertechnik.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 22 | 9 contacts → | ||||
Indirect evidence “CARNEADES - experience and best practice in legal and commercial project management!” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 23 | 9 contacts → | ||||
Indirect evidence “Was macht costconsult seit über 25 Jahren?” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 24 | 7 contacts → | ||||
Partial evidence “Klima Kontor - Atmosphäre schaffen Über uns: Klima Kontor ist ein führendes Architektur- und Ingenieurbüro, das sich auf nachhaltige und energieeffiziente Lösungen spezialisiert…” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 25 | 7 contacts → | ||||
Indirect evidence “Planhof entwickelt, strukturiert und realisiert anspruchsvolle technische Großprojekte.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
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: energy consultants. 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 energy consultants.
- Partial evidence
- Its own public description names part of energy consultants, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name energy consultants. 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 119 energy consultants based in Hamburg, Germany
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Energy consultants based in Hamburg, Germany at a glance
As of Sep 15, 2026Companies by employee count
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 119 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 energy consultants, 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 “energy consultants”. 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 energy consultants), 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 energy consultants, 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, 421 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 15, 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.
Energy consultants by metro in Germany
- Energy consultants in Berlin206
- Energy consultants in Hamburg119
- Energy consultants in Munchen77
- Energy consultants in Dusseldorf57
- Energy consultants in Munich46
- Energy consultants in Stuttgart42
- Energy consultants in Koln41
- Energy consultants in Hannover37
- Energy consultants in Bremen30
- Energy consultants in Dresden27
- Energy consultants in Leipzig27
- Energy consultants in Frankfurt26
- Energy consultants 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 energy consultants, 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 energy consultants are there based in Hamburg, Germany?
RevenueBase identified 119 energy consultants 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?
JBO Engineering Group Gmbh, headquartered in Hamburg, tops this list with the largest team on record.
Which city has the most energy consultants?
Berlin leads with 206 headquartered companies, followed by Hamburg (119) and Munchen (77).
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 421 verified decision-maker contacts tracked across these 119 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 15, 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.
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