Company lists · Data refreshed September 2026

Top 25 Commercial building decarbonization firms based in Germany

Name: Commercial building decarbonization firms based in Germany
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 16, 2026 660 companies tracked

RevenueBase identified 660 commercial building decarbonization firms headquartered in Germany as of September 2026 and tracks 6,050 professional contacts across them, including 2,370 with verified work emails. Berlin is the largest hub.

This list covers commercial building decarbonization firms 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 16, 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 16, 2026 86% judged on-target in blind review

660Companies

6,050Contacts tracked

2,370Verified emails

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The 25 largest commercial building decarbonization firms based in Germany

Ranked by team size

Top 25 of 660 commercial building decarbonization firms based in Germany, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to commercial building decarbonization firms: 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	ISTA	Indirect evidence	Essen, GermanyHQ checked Sep 16, 2026	5,001-10,000	1,406 contacts →
	Indirect evidence “Wir geben Häusern eine Zukunft.” Source: RevenueBase Database · checked Sep 16, 2026
2	Kieback&peter	Partial evidence	Berlin, GermanyHQ checked Sep 16, 2026	1,001-5,000	580 contacts →
	Partial evidence “Our DNA are sustainable buildings As a Smart Building Solutioneer, we combine intelligent building technologies, data-based services, sustainable excellence and multiple synergy…” Source: RevenueBase Database · checked Sep 16, 2026
3	Paul Tech AG	Indirect evidence	Mannheim, GermanyHQ checked Sep 16, 2026	51-200	155 contacts →
	Indirect evidence “Die PAUL Tech AG mit Sitz in Mannheim macht Bestandsimmobilien grün und werthaltig.” Source: RevenueBase Database · checked Sep 16, 2026
4	Westbridge Advisory	Indirect evidence	Frankfurt, GermanyHQ checked Sep 16, 2026	51-200	147 contacts →
	Indirect evidence “Wir sind ein führender europäischer Energie- und Nachhaltigkeitsberater in der Immobilienwirtschaft.” Source: RevenueBase Database · checked Sep 16, 2026
5	Enviria	Partial evidence	Frankfurt, GermanyHQ checked Sep 16, 2026	51-200	132 contacts →
	Partial evidence “Since 2017, ENVIRIA develops comprehensive, integrated energy solutions for commercial and industrial clients.” Source: RevenueBase Database · checked Sep 16, 2026
6	Plan A	Indirect evidence	Berlin, GermanyHQ checked Sep 16, 2026	51-200	114 contacts →
	Indirect evidence “Plan A, a Diginex Company, is Europe’s leading provider of corporate carbon accounting and decarbonisation software, enabling companies to turn emissions intelligence into…” Source: RevenueBase Database · checked Sep 16, 2026
7	Aedifion	Partial evidence	Köln, GermanyHQ checked Sep 16, 2026	51-200	100 contacts →
	Partial evidence “Based in Cologne (Germany) with over 100 employees, we operate Germany’s leading software solution for optimizing building operations.” Source: RevenueBase Database · checked Sep 16, 2026
8	Einhundert	Indirect evidence	Köln, GermanyHQ checked Sep 16, 2026	51-200	87 contacts →
	Indirect evidence “Your partner for the energy transition in the real estate industry Since 2017, einhundert Energie GmbH has been supporting real estate companies in electrifying and decarbonizing…” Source: RevenueBase Database · checked Sep 16, 2026
9	Meteoviva	Partial evidence	52064 Aachen, GermanyHQ checked Sep 16, 2026	51-200	81 contacts →
	Partial evidence “With about 14 million hours of operation, meteoviva is the leading provider for AI-based solutions for optimised building operations worldwide - and ISO 27001 certified.” Source: RevenueBase Database · checked Sep 16, 2026
10	Fuchs & Eule	Indirect evidence	Metropolregion Berlin/brandenburg, GermanyHQ checked Sep 16, 2026	51-200	81 contacts →
	Indirect evidence “Wir wollen, dass so viele Immobilien wie möglich energieeffizient saniert werden.” Source: RevenueBase Database · checked Sep 16, 2026
11	Greenflash	Indirect evidence	Essen, GermanyHQ checked Sep 16, 2026	51-200	81 contacts →
	Indirect evidence “Wir als End-to-End Partner denken Energie ganzheitlich, wie kein anderer: Wir realisieren die Energieversorgung unserer Kunden als integriertes Gesamtsystem und übernehmen dabei…” Source: RevenueBase Database · checked Sep 16, 2026
12	First Climate	Indirect evidence	Bad Vilbel, GermanyHQ checked Sep 16, 2026	51-200	79 contacts →
	Indirect evidence “With 25 years of experience, First Climate is a leading global provider of carbon management and green energy services for hundreds of corporate and public sector clients.” Source: RevenueBase Database · checked Sep 16, 2026
13	Empact Gmbh	Indirect evidence	Köln, GermanyHQ checked Sep 16, 2026	51-200	73 contacts →
	Indirect evidence “Wir bringen grüne Infrastruktur in Ihre Gebäude!” Source: RevenueBase Database · checked Sep 16, 2026
14	BFE Institut FÜR Energie UND Umwelt Gmbh	Indirect evidence	Mannheim, GermanyHQ checked Sep 16, 2026	51-200	57 contacts →
	Indirect 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 16, 2026
15	Envistra Gmbh	Indirect evidence	Hürth, GermanyHQ checked Sep 16, 2026	51-200	57 contacts →
	Indirect evidence “Die Dienstleistungen der envistra GmbH zielen auf eine schnelle und langfristige Kostenreduktion und leisten einen wesentlichen Beitrag zu einer nachhaltigen…” Source: RevenueBase Database · checked Sep 16, 2026
16	Metiundo Gmbh	Indirect evidence	Berlin, GermanyHQ checked Sep 16, 2026	51-200	56 contacts →
	Indirect evidence “CO2 emissions in the real estate sector must be reduced quickly.” Source: RevenueBase Database · checked Sep 16, 2026
17	Purpose Green	Indirect evidence	Berlin, GermanyHQ checked Sep 16, 2026	51-200	53 contacts →
	Indirect evidence “End-to-end solution for energy retrofits and long-term ESG management.” Source: RevenueBase Database · checked Sep 16, 2026
18	42watt	Partial evidence	Munich, GermanyHQ checked Sep 16, 2026	51-200	47 contacts →
	Partial 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 16, 2026
19	E-Con	Indirect evidence	Memmingen, GermanyHQ checked Sep 16, 2026	51-200	47 contacts →
	Indirect evidence “e-con AG Die e-con AG ist seit 20 Jahren im Einsatz für erneuerbare Energien und versteht sich als Partner für die Energiewende.” Source: RevenueBase Database · checked Sep 16, 2026
20	Ökotec Energiemanagement Gmbh	Indirect evidence	Berlin, GermanyHQ checked Sep 16, 2026	51-200	46 contacts →
	Indirect 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 16, 2026
21	Egs-Plan Gmbh	Indirect evidence	Stuttgart, GermanyHQ checked Sep 16, 2026	51-200	45 contacts →
	Indirect evidence “Wir entwickeln energieeffiziente Gebäude und klimaneutrale Quartiere für die Zukunft.” Source: RevenueBase Database · checked Sep 16, 2026
22	Futurecamp Climate Gmbh	Indirect evidence	München, GermanyHQ checked Sep 16, 2026	51-200	44 contacts →
	Indirect evidence “Nachhaltige Transformation für eine zukunftsfähige Wirtschaft Als spezialisierte Unternehmensberatung für Emissionshandel, CBAM, Treibhausgasbilanzierung, Energieeffizienz sowie…” Source: RevenueBase Database · checked Sep 16, 2026
23	Recogizer	Indirect evidence	Bonn, GermanyHQ checked Sep 16, 2026	51-200	41 contacts →
	Indirect evidence “Recogizer unterstützt Bestandshalter, Eigentümer und Dienstleister dabei, die Nachhaltigkeit von Gewerbeimmobilien messbar zu steigern.” Source: RevenueBase Database · checked Sep 16, 2026
24	E.Distherm Wärmedienstleistungen Gmbh	Indirect evidence	Schönefeld, GermanyHQ checked Sep 16, 2026	51-200	39 contacts →
	Indirect evidence “e.distherm ist darauf spezialisiert, dezentrale Energielösungen auf Basis effizienter, nachhaltiger und innovativer Konzepte zu entwickeln.” Source: RevenueBase Database · checked Sep 16, 2026
25	Metr Building Management Systems Gmbh	Partial evidence	Berlin, GermanyHQ checked Sep 16, 2026	11-50	37 contacts →
	Partial evidence “metr aims to accelerate the reduction of global CO2 emissions and make buildings more energy-efficient and sustainable.” Source: RevenueBase Database · checked Sep 16, 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: commercial building decarbonization firms. 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 commercial building decarbonization firms.
Partial evidence: Its own public description names part of commercial building decarbonization firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name commercial building decarbonization firms. 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 660 commercial building decarbonization firms based in Germany

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Commercial building decarbonization firms based in Germany at a glance

As of Sep 16, 2026

39.2%Verified-email coverage

9.2Average contacts per company

1-10Median size (employees)

9.1%Largest-city concentration · Berlin

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

442

11-50

148

51-200

501-1,000

1,001-5,000

5,001-10,000

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 660 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 commercial building decarbonization firms, 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 “commercial building decarbonization firms”. 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 commercial building decarbonization firms), 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 commercial building decarbonization firms, 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, 2,370 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 16, 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.

Commercial building decarbonization firms by metro

Commercial building decarbonization firms in Berlin60
Commercial building decarbonization firms in Hamburg31

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 commercial building decarbonization firms, 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 commercial building decarbonization firms are there based in Germany?

RevenueBase identified 660 commercial building decarbonization firms 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?

ISTA, headquartered in Essen, tops this list with the largest team on record.

Which city has the most commercial building decarbonization firms?

Berlin leads with 60 headquartered companies, followed by Hamburg (31) and Munich (19).

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 2,370 verified decision-maker contacts tracked across these 660 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 16, 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.