Company lists · Data refreshed September 2026

Top 22 Building efficiency venture firms based in Germany

RevenueBase identified 53 building efficiency venture firms headquartered in Germany as of September 2026 and tracks 698 professional contacts across them, including 298 with verified work emails. Berlin is the largest hub.

This list covers building efficiency venture 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
53Companies
698Contacts tracked
298Verified emails
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The 22 largest building efficiency venture firms based in Germany

Ranked by team size
Top 22 of 53 building efficiency venture 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 building efficiency venture 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceMannheim, GermanyHQ checked Sep 16, 202651-200155 contacts →

Indirect evidence

“Die PAUL Tech AG mit Sitz in Mannheim macht Bestandsimmobilien grün und werthaltig.”

Source: RevenueBase Database · checked Sep 16, 2026
2Indirect evidenceHamburg, GermanyHQ checked Sep 16, 202651-20078 contacts →

Indirect evidence

“Reneo is a leading asset and investment management platform for manage-to-green strategies.”

Source: RevenueBase Database · checked Sep 16, 2026
3Partial evidenceMunich, GermanyHQ checked Sep 16, 202611-5057 contacts →

Partial evidence

“27pilots helps companies to benefit strategically from startups through a breakthrough corporate venturing tool: The Venture Client model.”

Source: RevenueBase Database · checked Sep 16, 2026
4Indirect evidenceBerlin, GermanyHQ checked Sep 16, 202651-20049 contacts →

Indirect evidence

“Saxovent is a Berlin-based developer of projects in the fields of renewable energy, real estate and agriculture, with a track record of over twenty years of success.”

Source: RevenueBase Database · checked Sep 16, 2026
5Indirect evidenceDüsseldorf, GermanyHQ checked Sep 16, 202651-20039 contacts →

Indirect evidence

“The aream Group is a fully integrated investment and asset manager for institutional investors focusing on sustainable infrastructure in the renewable energy sector, including…”

Source: RevenueBase Database · checked Sep 16, 2026
6Strong evidenceBerlin, GermanyHQ checked Sep 16, 202611-5037 contacts →

Strong 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
7Indirect evidenceBerlin, GermanyHQ checked Sep 16, 202611-5022 contacts →

Indirect evidence

“We support and invest in early-stage companies that disrupt the established ways how we generate, manage, and use energy.”

Source: RevenueBase Database · checked Sep 16, 2026
8Partial evidenceKöln, GermanyHQ checked Sep 16, 202611-5018 contacts →

Partial evidence

“Realyze Ventures is a European venture capital fund specialising in the construction and real estate sector and its intersection with the energy industry.”

Source: RevenueBase Database · checked Sep 16, 2026
9Indirect evidenceHamburg, GermanyHQ checked Sep 16, 202611-5014 contacts →

Indirect evidence

“CutPower is one of Europe's leading sustainability investors committed to reduce energy and CO2 consumption in the real estate, energy and mobility sectors.”

Source: RevenueBase Database · checked Sep 16, 2026
10Indirect evidenceBerlin, GermanyHQ checked Sep 16, 20261-109 contacts →

Indirect evidence

“We invest into technologies that change the way we live in and interact with urban areas.”

Source: RevenueBase Database · checked Sep 16, 2026
11Partial evidenceDüsseldorf, GermanyHQ checked Sep 16, 202611-509 contacts →

Partial evidence

“DABBEL AI helps building owners and operators reduce energy costs and CO₂ emissions by an average of 20%, without any upfront investment or hardware replacement.”

Source: RevenueBase Database · checked Sep 16, 2026
12Indirect evidenceHamburg, GermanyHQ checked Sep 16, 20261-108 contacts →

Indirect evidence

“Wir bei Helio Connect bauen DIE Plattform für Investments im Bereich erneuerbare Energien.”

Source: RevenueBase Database · checked Sep 16, 2026
13Indirect evidenceEssen, GermanyHQ checked Sep 16, 20261-107 contacts →

Indirect evidence

“Die Brick Group GmbH ist eine inhabergeführte Beteiligungsgesellschaft, die sich auf die Bau- und Handwerksbranche spezialisiert hat, insbesondere auf energetische Sanierung und…”

Source: RevenueBase Database · checked Sep 16, 2026
14Partial evidenceKöln, GermanyHQ checked Sep 16, 20261-107 contacts →

Partial evidence

“BitStone Capital is a venture capital investor focusing on innovative and sustainable technology companies in the real estate and construction sector.”

Source: RevenueBase Database · checked Sep 16, 2026
15Indirect evidenceKöln, GermanyHQ checked Sep 16, 20261-105 contacts →

Indirect evidence

“While VCs generally invest in companies with a unicorn growth trajectory, not every company is made and able to fulfill those ambitious goals regardless of how hard they try.”

Source: RevenueBase Database · checked Sep 16, 2026
16Indirect evidenceHamburg, GermanyHQ checked Sep 16, 20261-104 contacts →

Indirect evidence

“We build long-term relationships with businesses that are designed to grow fast.”

Source: RevenueBase Database · checked Sep 16, 2026
17Indirect evidenceEschborn, GermanyHQ checked Sep 16, 20261-104 contacts →

Indirect evidence

“Investmentgesellschaft für erneuerbare Energie, 100% grün betriebene, dezentralisierte Technologie und moderne Immobilien-Projekte”

Source: RevenueBase Database · checked Sep 16, 2026
18Indirect evidenceMönchengladbach, GermanyHQ checked Sep 16, 20261-103 contacts →

Indirect evidence

“A home of brands and investments that are propelling the B2B market forward.”

Source: RevenueBase Database · checked Sep 16, 2026
19Indirect evidenceBüren, GermanyHQ checked Sep 16, 20261-103 contacts →

Indirect evidence

“Die GRP Gruppe ist auf Immobilien spezialisiert und verbindet langjährige Markterfahrung mit dem Ziel, nachhaltige und langfristige Werte zu schaffen.”

Source: RevenueBase Database · checked Sep 16, 2026
20Partial evidenceMunich, GermanyHQ checked Sep 16, 20261-103 contacts →

Partial evidence

“Presight4 is a venture builder, focusing on the whole value chain of systematically creating and scaling ventures.”

Source: RevenueBase Database · checked Sep 16, 2026
21Indirect evidenceMunich, GermanyHQ checked Sep 16, 20261-101 contacts →

Indirect evidence

“Tach2yone is an investment firm providing growth capital for Green Tech companies with the potential for significant scale-up.”

Source: RevenueBase Database · checked Sep 16, 2026
22Indirect evidenceTrier, GermanyHQ checked Sep 16, 20261-101 contacts →

Indirect evidence

“Bei WI Funding sprechen wir nicht nur von Nachhaltigkeit – wir leben sie!”

Source: RevenueBase Database · checked Sep 16, 2026

Showing 22 of 53 building efficiency venture firms based in Germany

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Building efficiency venture firms based in Germany at a glance

As of Sep 16, 2026
42.7%Verified-email coverage
13.2Average contacts per company
1-10Median size (employees)
20.8%Largest-city concentration · Berlin
Sep 16, 2026Page data refreshed

Companies by employee count

1-10
34
11-50
12
51-200
4
501-1,000
1
1,001-5,000
2

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 53 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 efficiency venture 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 “building efficiency venture 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 building efficiency venture 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 building efficiency venture 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, 298 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.

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 efficiency venture 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 building efficiency venture firms are there based in Germany?

RevenueBase identified 53 building efficiency venture 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?

Paul Tech AG, headquartered in Mannheim, tops this list with the largest team on record.

Which city has the most building efficiency venture firms?

Berlin leads with 11 headquartered companies, followed by Hamburg (5) and Munich (4).

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 298 verified decision-maker contacts tracked across these 53 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.