Company lists · Data refreshed September 2026
Top 25 Building energy retrofit consultants based in Germany
RevenueBase identified 592 building energy retrofit consultants headquartered in Germany as of September 2026 and tracks 1,945 professional contacts across them, including 630 with verified work emails. Berlin is the largest hub.
This list covers building energy retrofit consultants headquartered in 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 27, 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 building energy retrofit consultants based in Germany
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 57 contacts → | ||||
Partial evidence “Das BFE Institut für Energie und Umwelt GmbH ist ein Unternehmen der MVV Energie AG und zählt mit über Projekten und ca.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 2 | 53 contacts → | ||||
Strong evidence “End-to-end solution for energy retrofits and long-term ESG management.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 3 | 49 contacts → | ||||
Partial evidence “WOLFF & MÜLLER ENERGY GMBH ist Teil der traditionsreichen Unternehmensgruppe WOLFF & MÜLLER, einem mittelständischen Familienunternehmen mit Stammsitz in Stuttgart.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 4 | 47 contacts → | ||||
Strong evidence “In a market full of complexity and empty promises, 42watt makes energy-efficient building modernization simple, reliable, and actionable.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 5 | 46 contacts → | ||||
Partial evidence “Since its founding 20 years ago, ÖKOTEC stands for intelligent solutions for the reduction of energy and resource consumption.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 6 | 34 contacts → | ||||
Indirect evidence “Als inhabergeführtes Ingenieurbüro mit 35 Mitarbeitenden liegt peil und partner ingenieure GmbH zentral im Herzen Berlins.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 7 | 29 contacts → | ||||
Partial evidence “RENEWA ist dein unabhängiger Partner für energetische Sanierung.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 8 | 27 contacts → | ||||
Strong evidence “Energy-efficient building renovations are complex.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 9 | 22 contacts → | ||||
Partial evidence “Wir sind seit 2009 spezialisierter Dienstleister im Bereich der Energie- und Fördergeldberatung mit einer Vielzahl namhafter Kunden aller Gewerke.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 10 | 21 contacts → | ||||
Partial evidence “Sind Ihnen Ihre Energiekosten ein Dorn im Auge?” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 11 | 20 contacts → | ||||
Indirect evidence “Die Etanomics Service GmbH wurde gegründet aus dem Nachhaltigkeitsprojekt „Effizienz Plus" der Viessmann Group: Mit unserer Hilfe wurde der Verbrauch von Öl und Gas um 60 Prozent…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 12 | 19 contacts → | ||||
Indirect evidence “MorgenGrün – Innovationen von ZWP Wir wollen vor allem eines: mit der Kraft von Innovationen Gebäude und Liegenschaften so gestalten, dass sie langfristig unserer ökologischen und…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 13 | 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 27, 2026Thanks. The Data Team will review it. | |||||
| 14 | 16 contacts → | ||||
Indirect evidence “Ideen gemeinsam verwirklichen.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 15 | 16 contacts → | ||||
Partial evidence “We take responsibility for the efficiency of energy supply for the entire life cycle of a project.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 16 | 16 contacts → | ||||
Indirect evidence “SCHOLZE-THOST GmbH ist die Fortführung von langjähriger Beratungskompetenz im Facility Management und Planungsleistungen in der Technischen Gebäudeausrüstung in Verbindung mit…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 17 | 15 contacts → | ||||
Partial evidence “Als Energieberater decken wir alle Aspekte deines Bauvorhabens ab, von der Planung bis hin zur Inbetriebnahme sowie dem Nachtrags- und Mängelmanagement.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 18 | 15 contacts → | ||||
Strong evidence “En-Concept Energy Consultancy GmbH – Ihr Partner für nachhaltiges Energiemanagement Die En-Concept Energy Consultancy GmbH unterstützt Unternehmen aller Branchen und…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 19 | 15 contacts → | ||||
Partial evidence “Energy Partners offers a 360-degree service for the implementation of integrated rooftop energy projects for companies and organizations in the industrial and commercial sectors.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 20 | 14 contacts → | ||||
Indirect evidence “Easy to reach, we share our extensive knowledge and never owe an answer.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 21 | 13 contacts → | ||||
Indirect evidence “Seit sind wir Experten für die Beantragung von Förderanträgen.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 22 | 13 contacts → | ||||
Partial evidence “tga bodensee GmbH ist ein Unternehmen, das die Beratung und Umsetzung von zukunftsweisender Haus- und Energietechnik sowohl für Privat- als auch Gewerbekunden anbietet.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 23 | 13 contacts → | ||||
Partial evidence “Planning, consulting and execution for technical building equipment (tbe)- HVAC+R Basic services: Consulting / Concept / Planning / Tendering and awarding of contracts / Site…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 24 | 12 contacts → | ||||
Partial evidence “Menschen brauchen Energie.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 25 | 11 contacts → | ||||
Partial evidence “Denken Sie darüber nach energieeffizient zu sanieren oder ein Gebäude abzureißen?” Source: RevenueBase Database · checked Sep 27, 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: building energy retrofit 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 building energy retrofit consultants.
- Partial evidence
- Its own public description names part of building energy retrofit consultants, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name building energy retrofit 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 592 building energy retrofit consultants based in Germany
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Building energy retrofit consultants based in Germany at a glance
As of Sep 27, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for Germany, so it is reported there. Company counts and contact totals on this page are exact for Germany, over 592 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 building energy retrofit 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 Germany whose own description of what they do matches “building energy retrofit 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 building energy retrofit 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 building energy retrofit consultants, and records with no verified work email. Companies headquartered outside Germany 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, 630 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 27, 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 building energy retrofit 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 building energy retrofit consultants are there based in Germany?
RevenueBase identified 592 building energy retrofit consultants headquartered in 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?
BFE Institut FÜR Energie UND Umwelt Gmbh, headquartered in Mannheim, tops this list with the largest team on record.
Which city has the most building energy retrofit consultants?
Berlin leads with 41 headquartered companies, followed by Hamburg (27) and Koln (12).
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 630 verified decision-maker contacts tracked across these 592 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 27, 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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