Company lists · Data refreshed November 2026

Top 25 Home energy efficiency contractors based in Germany

RevenueBase identified 125 company matches for home energy efficiency contractors associated with Germany as of November 2026 and tracks 320 professional contacts across them, including 87 with verified work emails. Berlin is the largest hub.

This list covers company matches for home energy efficiency contractors associated with Germany, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built
125Companies
320Contacts tracked
87Verified emails
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The 25 largest home energy efficiency contractors based in Germany

Ranked by team size
Top 25 of 125 company matches for home energy efficiency contractors based in Germany, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchHamburg, GermanyHQ recorded Nov 6, 202651-20033 contacts →

Exact match

“RENEWA ist dein unabhängiger Partner für energetische Sanierung.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchPotsdam, GermanyHQ recorded Nov 6, 202611-5015 contacts →

Exact match

“Als Energieberater decken wir alle Aspekte deines Bauvorhabens ab, von der Planung bis hin zur Inbetriebnahme sowie dem Nachtrags- und Mängelmanagement.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchWillich, GermanyHQ recorded Nov 6, 202611-5013 contacts →

Exact match

“Die Herausforderung unserer Generation ist der Klimawandel, eine Mammutaufgabe.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchKleve, GermanyHQ recorded Nov 6, 20261-106 contacts →

Exact match

“Energieberatung für Wohngebäude | denkmalgeschützte Gebäude | Gewerbeimmobilien | die öffentliche Hand Schoofs ist die unabhängige Energieberatung am Niederrhein in Kleve.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchBerlin, GermanyHQ recorded Nov 6, 20261-106 contacts →

Exact match

“Wir gestalten die energetische Sanierung für Hausbesitzer in Deutschland so einfach, effizient und nachhaltig wie möglich.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchBerlin, GermanyHQ recorded Nov 6, 202611-505 contacts →

Exact match

“Sie möchten Ihre Immobilie umfassend sanieren?”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchHalle, GermanyHQ recorded Nov 6, 20261-105 contacts →

Exact match

“Energiekompetenz für mehr Effizienz”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchGeislingen An Der Steige, GermanyHQ recorded Nov 6, 20261-105 contacts →

Exact match

“viviania steht für eine gesamtheitliche Energieberatung, die nicht nur den umfangreichen Aufgabenbereich der Energieberatung technisch, kaufmännisch und administrativ abdeckt…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchRemchingen, GermanyHQ recorded Nov 6, 20261-104 contacts →

Exact match

“Wir unterstützen private Haushalte, Unternehmen und Kommunen bei allen Fragen rund um das Thema energieeffiziente Gebäude.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchWolfsburg, GermanyHQ recorded Nov 6, 20261-104 contacts →

Exact match

“Wir bieten- Energieausweise - Energieberatung - Baubegleitung - Förderantragsstellung - Effizienzhausplanung - Handwerkervermittlung - Auditierung Unsere Kundschaft sind-…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchStuttgart, GermanyHQ recorded Nov 6, 20261-104 contacts →

Exact match

“Ihre Individuelle Energieberatung und Partner bei der Umsetzung energetischer Maßnahmen an Ihrer Immobilie.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchBerlin, GermanyHQ recorded Nov 6, 20261-104 contacts →

Exact match

“Pfad A ist Ihr All-in-One-Partner für ganzheitliche Energieberatung.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchHeidelberg, GermanyHQ recorded Nov 6, 202651-2003 contacts →

Exact match

“Jahrelange Erfahrungen in der Planung und Ausführung von HLK Anlagen haben unsere Firma zu einem kompetenten Ansprechpartner in der Region geprägt.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchRostock, GermanyHQ recorded Nov 6, 20261-102 contacts →

Exact match

“Unser Ziel ist es, Gebäude in eine unabhängige und sichere Energieversorgung zu führen und dabei Klimaschutz und Wirtschaftlichkeit zu vereinen.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchWald-michelbach, GermanyHQ recorded Nov 6, 20261-102 contacts →

Exact match

“Ader Energy GmbH umfasst die Beratung von Hauseigentümern, Immobilienmaklern, Hausverwaltungen und Kommunen zur Steigerung der Energieeffizienz von Wohngebäuden.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchRaben Steinfeld, GermanyHQ recorded Nov 6, 20261-102 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchBerlin, GermanyHQ recorded Nov 6, 202611-502 contacts →

Exact match

“Willkommen bei Volgas Energy – Ihr zuverlässiger Partner in Sachen Energie!”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchCologne, GermanyHQ recorded Nov 6, 20261-102 contacts →

Exact match

“Wir bieten maßgeschneiderte Lösungen zur Senkung Ihrer Energiekosten.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchFrankfurt, GermanyHQ recorded Nov 6, 20261-102 contacts →

Exact match

“EMHAY Energieberatung is a company based out of Königsteiner Str, Frankfurt am Main, Germany.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchNördlingen, GermanyHQ recorded Nov 6, 20261-102 contacts →

Exact match

“unabhängige Gebäude-Energieberatung unabhängige Vor-Ort-Beratung individueller Sanierungsfahrplan (iSFP) energetische Gebäudesanierung energetische Planung und Bewertung von Wohn-…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchOlpe, GermanyHQ recorded Nov 6, 20261-102 contacts →

Exact match

“Wir bieten nicht nur Beratung und Lösungen an, sondern unterstützen Sie auch bei der Beantragung von Fördergeldern zur Umsetzung von energieeffizienten Maßnahmen.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchBremen, GermanyHQ recorded Nov 6, 20261-102 contacts →

Exact match

“Das Team der Leonhardt Solar GmbH bietet die ganzheitliche energetische Betrachtung für Unternehmen an.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchKalkar, GermanyHQ recorded Nov 6, 20261-102 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchMarktheidenfeld, GermanyHQ recorded Nov 6, 202611-501 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchKehl, GermanyHQ recorded Nov 6, 20261-101 contacts →

Exact match

“Energieberatung, Fördermittel”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 125 home energy efficiency contractors based in Germany

See the full list, filter by size, metro and specialty, and access 87 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Home energy efficiency contractors based in Germany at a glance

As of Nov 6, 2026
27.2%Verified-email coverage
2.6Average contacts per company
1-10Median size (employees)
12.0%Largest-city concentration · Berlin
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
96
11-50
14
51-200
3
201-500
1
1,001-5,000
1

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 125 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with Germany whose business descriptions match “home energy efficiency contractors” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 87 professional contacts with verified work emails across the full matched dataset. 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 November 6, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “home energy efficiency contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many home energy efficiency contractors are there based in Germany?

RevenueBase identified 125 company matches for home energy efficiency contractors associated with Germany as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Renewa Gmbh tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most home energy efficiency contractors?

Berlin leads with 15 company records, followed by Heidelberg (4) and Munich (4).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 87 professional contacts with verified work emails tracked across these 125 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 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 SmartSearch, 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.