Company lists · Data refreshed October 2026
Top 25 Energy efficient home upgrade contractors based in Germany
RevenueBase identified 506 company matches for energy efficient home upgrade contractors associated with Germany as of October 2026 and tracks 1,298 professional contacts across them, including 336 with verified work emails. Berlin is the largest hub.
This list covers company matches for energy efficient home upgrade 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 October 12, 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.
The 25 largest energy efficient home upgrade contractors based in Germany
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 119 contacts → | ||||
Exact match “ecoworks is the trusted partner for the housing sector when it comes to affordable, energy-efficient renovations.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase | |||||
| 2 | 47 contacts → | ||||
Exact match “In a market full of complexity and empty promises, 42watt makes energy-efficient building modernization simple, reliable, and actionable.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase | |||||
| 3 | 30 contacts → | ||||
Exact match “RENEWA ist dein unabhängiger Partner für energetische Sanierung.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase | |||||
| 4 | 21 contacts → | ||||
Exact match “Der Solarteur bringt Solar auf Ihr Dach!” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase | |||||
| 5 | 16 contacts → | ||||
Exact match “Natelberg Gebäudetechnik GmbH is a computer networking company based out of 9 Schwarzmoorstraße, Rhauderfehn, Germany.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase | |||||
| 6 | 14 contacts → | ||||
Exact match “tga bodensee GmbH ist ein Unternehmen, das die Beratung und Umsetzung von zukunftsweisender Haus- und Energietechnik sowohl für Privat- als auch Gewerbekunden anbietet.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase | |||||
| 7 | 14 contacts → | ||||
Exact match “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.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase | |||||
| 8 | 13 contacts → | ||||
Exact match “Die Herausforderung unserer Generation ist der Klimawandel, eine Mammutaufgabe.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase | |||||
| 9 | 13 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase | |||||
| 10 | 12 contacts → | ||||
Exact match “Dein Haus.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase | |||||
| 11 | 12 contacts → | ||||
Exact match “Die Ever Energy Group GmbH wurde 2007 von den Geschäftsführern Matthias Streibel (li.) und Dominik Modrach (re.) gegründet.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase | |||||
| 12 | 11 contacts → | ||||
Exact match “revotec energy ist ein führender Anbieter von Solaranlagen in Baden-Württemberg installiert auf Industrie- und Gewerbeimmobilien sowie Gebäuden von Kommunen und Vereinen.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase | |||||
| 13 | 9 contacts → | ||||
Exact match “Heizung - Klima - Sanitär” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase | |||||
| 14 | 9 contacts → | ||||
Exact match “Wir sind Ihr Handwerkspartner im Bereich Modernisierung und energiesparende Maßnahmen.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase | |||||
| 15 | 9 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase | |||||
| 16 | 7 contacts → | ||||
Exact match “Herzlich willkommen bei Mein Haus Digital!” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase | |||||
| 17 | 7 contacts → | ||||
Exact match “Wbmax GmbH delivers reliable and efficient heating, ventilation, plumbing, and electrical solutions to ensure comfortable, safe, and efficient spaces.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase | |||||
| 18 | 6 contacts → | ||||
Exact match “Sie möchten Ihre Immobilie umfassend sanieren?” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase | |||||
| 19 | 6 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase | |||||
| 20 | 6 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 · Oct 12, 2026 · View company records in RevenueBase | |||||
| 21 | 6 contacts → | ||||
Exact match “Willkommen bei aTmos – dem Experten für energetische Industrie- und Gebäudehüllensanierung.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase | |||||
| 22 | 6 contacts → | ||||
Exact match “Photovoltaik Berg – Ihre Experten für solare Energie!” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase | |||||
| 23 | 5 contacts → | ||||
Exact match “Am 01.05.1997 wurde das Unternehmen Umwelt- und Energietechnik von Mike Lorenz gegründet.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase | |||||
| 24 | 5 contacts → | ||||
Exact match “Energiekompetenz für mehr Effizienz” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase | |||||
| 25 | 5 contacts → | ||||
Exact match “ENWI, die Abkürzung für "Energie und Wohntechnik Installation", ist ein Unternehmen, welches als Dienstleistungs- und Installations-Unternehmen, für Wärmepumpen & Smart Homes im…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “energy efficient home upgrade contractors”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 506 energy efficient home upgrade contractors based in Germany
See the full list, filter by size, metro and specialty, and access 336 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Energy efficient home upgrade contractors based in Germany at a glance
As of Oct 12, 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 506 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 “energy efficient home upgrade 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 336 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 October 12, 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 “energy efficient home upgrade contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many energy efficient home upgrade contractors are there based in Germany?
RevenueBase identified 506 company matches for energy efficient home upgrade contractors associated with Germany as of October 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?
Ecoworks tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most energy efficient home upgrade contractors?
Berlin leads with 20 company records, followed by Hamburg (17) and Munich (8).
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 336 professional contacts with verified work emails tracked across these 506 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 October 12, 2026.
Ready to reach these companies? Verified emails and direct dials for all 506 energy efficient home upgrade contractors based in Germany. Start with a free account, no credit card.
Download this list →Related lists
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- Energy efficient home upgrade contractors based in New York, United States
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- Energy efficient home upgrade contractors based in San Diego, United States
- Energy efficient home upgrade contractors based in Australia
- Energy efficient home upgrade contractors based in Austria
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.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Energy efficient home upgrade contractors based in Toronto, Canada
- Energy efficient home upgrade contractors based in Paris, France
- Energy efficient home upgrade contractors based in London, United Kingdom
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Company intelligence · public preview
Top 25 energy efficient home upgrade contractors based in Germany
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 506 matching company records for energy efficient home upgrade contractors based in Germany, with 1,298 tracked contacts and 336 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: October 12, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 energy efficient home upgrade contractors based in Germany
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Ecoworksecoworks.tech HQ: Berlin, GermanyReported employees: 51-200 | Berlin, Germany | 51-200 | Exact match | 119 contacts → |
“ecoworks is the trusted partner for the housing sector when it comes to affordable, energy-efficient renovations.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  42watt42watt.deHQ: Munich, GermanyReported employees: 51-200 | Munich, Germany | 51-200 | Exact match | 47 contacts → |
“In a market full of complexity and empty promises, 42watt makes energy-efficient building modernization simple, reliable, and actionable.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Renewa Gmbhrenewa.deHQ: Hamburg, GermanyReported employees: 51-200 | Hamburg, Germany | 51-200 | Exact match | 30 contacts → |
“RENEWA ist dein unabhängiger Partner für energetische Sanierung.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | DER Solarteurder-solarteur.com HQ: Dortmund, GermanyReported employees: 51-200 | Dortmund, Germany | 51-200 | Exact match | 21 contacts → |
“Der Solarteur bringt Solar auf Ihr Dach!” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Natelberg Gebäudetechnik Gmbhnatelberg.de HQ: Rhauderfehn, GermanyReported employees: 11-50 | Rhauderfehn, Germany | 11-50 | Exact match | 16 contacts → |
“Natelberg Gebäudetechnik GmbH is a computer networking company based out of 9 Schwarzmoorstraße, Rhauderfehn, Germany.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  TGA Bodensee Gmbhtga-bodensee.deHQ: Salem, GermanyReported employees: 51-200 | Salem, Germany | 51-200 | Exact match | 14 contacts → |
“tga bodensee GmbH ist ein Unternehmen, das die Beratung und Umsetzung von zukunftsweisender Haus- und Energietechnik sowohl für Privat- als auch Gewerbekunden anbietet.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Energy Partners Gmbhenergypartners.de HQ: Traunstein, GermanyReported employees: 11-50 | Traunstein, Germany | 11-50 | Exact match | 14 contacts → |
“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.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | H&s Energiesystemehs-energiesysteme.de HQ: Willich, GermanyReported employees: 11-50 | Willich, Germany | 11-50 | Exact match | 13 contacts → |
“Die Herausforderung unserer Generation ist der Klimawandel, eine Mammutaufgabe.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Wibau Haustechnik Gmbhwibau-haustechnik.de HQ: Schwerin, GermanyReported employees: 11-50 | Schwerin, Germany | 11-50 | Exact match | 13 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 10 | Mobau Wirtz Haussystemewirtz-haussysteme.de HQ: Heinsberg, GermanyReported employees: 51-200 | Heinsberg, Germany | 51-200 | Exact match | 12 contacts → |
“Dein Haus.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Ever Energy Group Gmbheverenergy.deHQ: Berlin, GermanyReported employees: 51-200 | Berlin, Germany | 51-200 | Exact match | 12 contacts → |
“Die Ever Energy Group GmbH wurde 2007 von den Geschäftsführern Matthias Streibel (li.) und Dominik Modrach (re.) gegründet.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Revotec Energy Gmbhrevotec-energy.deHQ: Weissach, GermanyReported employees: 11-50 | Weissach, Germany | 11-50 | Exact match | 11 contacts → |
“revotec energy ist ein führender Anbieter von Solaranlagen in Baden-Württemberg installiert auf Industrie- und Gewerbeimmobilien sowie Gebäuden von Kommunen und Vereinen.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | H. Maurer Gmbh & Co. KGmaurer-schramberg.de HQ: Schramberg, GermanyReported employees: 51-200 | Schramberg, Germany | 51-200 | Exact match | 9 contacts → |
“Heizung - Klima - Sanitär” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Dirks Bedachungen Gmbhdirks-bedachungen.de HQ: Heiden, GermanyReported employees: 11-50 | Heiden, Germany | 11-50 | Exact match | 9 contacts → |
“Wir sind Ihr Handwerkspartner im Bereich Modernisierung und energiesparende Maßnahmen.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | HQ: Biberach, GermanyReported employees: 51-200 | Biberach, Germany | 51-200 | Exact match | 9 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 16 | meinhaus.digitalmeinhaus.digital HQ: Schwäbisch Gmünd, GermanyReported employees: 11-50 | Schwäbisch Gmünd, Germany | 11-50 | Exact match | 7 contacts → |
“Herzlich willkommen bei Mein Haus Digital!” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Wbmax Gmbhwb-max.de HQ: Frankfurt, GermanyReported employees: 51-200 | Frankfurt, Germany | 51-200 | Exact match | 7 contacts → |
“Wbmax GmbH delivers reliable and efficient heating, ventilation, plumbing, and electrical solutions to ensure comfortable, safe, and efficient spaces.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Enion Energieberatungenion.deHQ: Berlin, GermanyReported employees: 11-50 | Berlin, Germany | 11-50 | Exact match | 6 contacts → |
“Sie möchten Ihre Immobilie umfassend sanieren?” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  B&k Energie UND Wärmelösungen Gmbhbk-energie.comHQ: Berlin, GermanyReported employees: 11-50 | Berlin, Germany | 11-50 | Exact match | 6 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 20 |  2020grad.deHQ: Berlin, GermanyReported employees: 1-10 | Berlin, Germany | 1-10 | Exact match | 6 contacts → |
“Wir gestalten die energetische Sanierung für Hausbesitzer in Deutschland so einfach, effizient und nachhaltig wie möglich.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Atmos Gruppeatmos-gruppe.deHQ: Riedstadt, GermanyReported employees: 51-200 | Riedstadt, Germany | 51-200 | Exact match | 6 contacts → |
“Willkommen bei aTmos – dem Experten für energetische Industrie- und Gebäudehüllensanierung.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Photovoltaik Bergphotovoltaik-berg.de HQ: Quakenbrück, GermanyReported employees: 1-10 | Quakenbrück, Germany | 1-10 | Exact match | 6 contacts → |
“Photovoltaik Berg – Ihre Experten für solare Energie!” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Lorenz Energie Gmbhlorenzenergie.de HQ: Gründau, GermanyReported employees: 51-200 | Gründau, Germany | 51-200 | Exact match | 5 contacts → |
“Am 01.05.1997 wurde das Unternehmen Umwelt- und Energietechnik von Mike Lorenz gegründet.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Energieberatung Mitteldeutschlandenergieberatung-mitteldeutschland.deHQ: Halle, GermanyReported employees: 1-10 | Halle, Germany | 1-10 | Exact match | 5 contacts → |
“Energiekompetenz für mehr Effizienz” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Enwi Gmbhgoenwi.comHQ: Hamburg, GermanyReported employees: 1-10 | Hamburg, Germany | 1-10 | Exact match | 5 contacts → |
“ENWI, die Abkürzung für "Energie und Wohntechnik Installation", ist ein Unternehmen, welches als Dienstleistungs- und Installations-Unternehmen, für Wärmepumpen & Smart Homes im…” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 506 company matches
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Energy efficient home upgrade contractors: dataset insights
October 12, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
433 records in the displayed employee bands.
73 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
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 506 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: October 12, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for energy efficient home upgrade contractors?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many energy efficient home upgrade contractors did RevenueBase find based in Germany?
The saved snapshot records 506 matching company records, 1,298 tracked contacts and 336 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: October 12, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Energy efficient home upgrade contractors by geography
- Energy efficient home upgrade contractors based in Toronto, Canada
- Energy efficient home upgrade contractors based in Paris, France
- Energy efficient home upgrade contractors based in London, United Kingdom
- Energy efficient home upgrade contractors based in Austin, United States
- Energy efficient home upgrade contractors based in Denver, United States
- Energy efficient home upgrade contractors based in Houston, United States
- Energy efficient home upgrade contractors based in Los Angeles, United States
- Energy efficient home upgrade contractors based in New York, United States
- Energy efficient home upgrade contractors based in Phoenix, United States
- Energy efficient home upgrade contractors based in San Diego, United States
- Energy efficient home upgrade contractors based in Australia
- Energy efficient home upgrade contractors based in Austria
Cite this list
RevenueBase Data Team. Top 25 energy efficient home upgrade contractors based in Germany. Snapshot: October 12, 2026. https://revenuebase.ai/companies/energy-efficient-home-upgrade-contractors/germany.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Energy efficient home upgrade contractors based in Toronto, Canada
- Energy efficient home upgrade contractors based in Paris, France
- Energy efficient home upgrade contractors based in London, United Kingdom
- Energy efficient home upgrade contractors based in Austin, United States
- Energy efficient home upgrade contractors based in Denver, United States
- Energy efficient home upgrade contractors based in Houston, United States
Company intelligence · public preview
Top 25 energy efficient home upgrade contractors based in Germany
RevenueBase records 506 matching company records for energy efficient home upgrade contractors based in Germany, with 1,298 tracked contacts and 336 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: October 12, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 energy efficient home upgrade contractors based in Germany
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Ecoworksecoworks.tech HQ: Berlin, GermanyReported employees: 51-200 | Berlin, Germany | 51-200 | Exact match | 119 contacts → |
“ecoworks is the trusted partner for the housing sector when it comes to affordable, energy-efficient renovations.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | 42watt42watt.de HQ: Munich, GermanyReported employees: 51-200 | Munich, Germany | 51-200 | Exact match | 47 contacts → |
“In a market full of complexity and empty promises, 42watt makes energy-efficient building modernization simple, reliable, and actionable.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Renewa Gmbhrenewa.de HQ: Hamburg, GermanyReported employees: 51-200 | Hamburg, Germany | 51-200 | Exact match | 30 contacts → |
“RENEWA ist dein unabhängiger Partner für energetische Sanierung.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | DER Solarteurder-solarteur.com HQ: Dortmund, GermanyReported employees: 51-200 | Dortmund, Germany | 51-200 | Exact match | 21 contacts → |
“Der Solarteur bringt Solar auf Ihr Dach!” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Natelberg Gebäudetechnik Gmbhnatelberg.de HQ: Rhauderfehn, GermanyReported employees: 11-50 | Rhauderfehn, Germany | 11-50 | Exact match | 16 contacts → |
“Natelberg Gebäudetechnik GmbH is a computer networking company based out of 9 Schwarzmoorstraße, Rhauderfehn, Germany.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | TGA Bodensee Gmbhtga-bodensee.de HQ: Salem, GermanyReported employees: 51-200 | Salem, Germany | 51-200 | Exact match | 14 contacts → |
“tga bodensee GmbH ist ein Unternehmen, das die Beratung und Umsetzung von zukunftsweisender Haus- und Energietechnik sowohl für Privat- als auch Gewerbekunden anbietet.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Energy Partners Gmbhenergypartners.de HQ: Traunstein, GermanyReported employees: 11-50 | Traunstein, Germany | 11-50 | Exact match | 14 contacts → |
“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.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | H&s Energiesystemehs-energiesysteme.de HQ: Willich, GermanyReported employees: 11-50 | Willich, Germany | 11-50 | Exact match | 13 contacts → |
“Die Herausforderung unserer Generation ist der Klimawandel, eine Mammutaufgabe.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Wibau Haustechnik Gmbhwibau-haustechnik.de HQ: Schwerin, GermanyReported employees: 11-50 | Schwerin, Germany | 11-50 | Exact match | 13 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 10 | Mobau Wirtz Haussystemewirtz-haussysteme.de HQ: Heinsberg, GermanyReported employees: 51-200 | Heinsberg, Germany | 51-200 | Exact match | 12 contacts → |
“Dein Haus.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Ever Energy Group Gmbheverenergy.de HQ: Berlin, GermanyReported employees: 51-200 | Berlin, Germany | 51-200 | Exact match | 12 contacts → |
“Die Ever Energy Group GmbH wurde 2007 von den Geschäftsführern Matthias Streibel (li.) und Dominik Modrach (re.) gegründet.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Revotec Energy Gmbhrevotec-energy.de HQ: Weissach, GermanyReported employees: 11-50 | Weissach, Germany | 11-50 | Exact match | 11 contacts → |
“revotec energy ist ein führender Anbieter von Solaranlagen in Baden-Württemberg installiert auf Industrie- und Gewerbeimmobilien sowie Gebäuden von Kommunen und Vereinen.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | H. Maurer Gmbh & Co. KGmaurer-schramberg.de HQ: Schramberg, GermanyReported employees: 51-200 | Schramberg, Germany | 51-200 | Exact match | 9 contacts → |
“Heizung - Klima - Sanitär” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Dirks Bedachungen Gmbhdirks-bedachungen.de HQ: Heiden, GermanyReported employees: 11-50 | Heiden, Germany | 11-50 | Exact match | 9 contacts → |
“Wir sind Ihr Handwerkspartner im Bereich Modernisierung und energiesparende Maßnahmen.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | HQ: Biberach, GermanyReported employees: 51-200 | Biberach, Germany | 51-200 | Exact match | 9 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 16 | meinhaus.digitalmeinhaus.digital HQ: Schwäbisch Gmünd, GermanyReported employees: 11-50 | Schwäbisch Gmünd, Germany | 11-50 | Exact match | 7 contacts → |
“Herzlich willkommen bei Mein Haus Digital!” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Wbmax Gmbhwb-max.de HQ: Frankfurt, GermanyReported employees: 51-200 | Frankfurt, Germany | 51-200 | Exact match | 7 contacts → |
“Wbmax GmbH delivers reliable and efficient heating, ventilation, plumbing, and electrical solutions to ensure comfortable, safe, and efficient spaces.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Enion Energieberatungenion.de HQ: Berlin, GermanyReported employees: 11-50 | Berlin, Germany | 11-50 | Exact match | 6 contacts → |
“Sie möchten Ihre Immobilie umfassend sanieren?” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | B&k Energie UND Wärmelösungen Gmbhbk-energie.com HQ: Berlin, GermanyReported employees: 11-50 | Berlin, Germany | 11-50 | Exact match | 6 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 20 | 2020grad.de HQ: Berlin, GermanyReported employees: 1-10 | Berlin, Germany | 1-10 | Exact match | 6 contacts → |
“Wir gestalten die energetische Sanierung für Hausbesitzer in Deutschland so einfach, effizient und nachhaltig wie möglich.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Atmos Gruppeatmos-gruppe.de HQ: Riedstadt, GermanyReported employees: 51-200 | Riedstadt, Germany | 51-200 | Exact match | 6 contacts → |
“Willkommen bei aTmos – dem Experten für energetische Industrie- und Gebäudehüllensanierung.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Photovoltaik Bergphotovoltaik-berg.de HQ: Quakenbrück, GermanyReported employees: 1-10 | Quakenbrück, Germany | 1-10 | Exact match | 6 contacts → |
“Photovoltaik Berg – Ihre Experten für solare Energie!” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Lorenz Energie Gmbhlorenzenergie.de HQ: Gründau, GermanyReported employees: 51-200 | Gründau, Germany | 51-200 | Exact match | 5 contacts → |
“Am 01.05.1997 wurde das Unternehmen Umwelt- und Energietechnik von Mike Lorenz gegründet.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Energieberatung Mitteldeutschlandenergieberatung-mitteldeutschland.de HQ: Halle, GermanyReported employees: 1-10 | Halle, Germany | 1-10 | Exact match | 5 contacts → |
“Energiekompetenz für mehr Effizienz” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Enwi Gmbhgoenwi.com HQ: Hamburg, GermanyReported employees: 1-10 | Hamburg, Germany | 1-10 | Exact match | 5 contacts → |
“ENWI, die Abkürzung für "Energie und Wohntechnik Installation", ist ein Unternehmen, welches als Dienstleistungs- und Installations-Unternehmen, für Wärmepumpen & Smart Homes im…” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
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Energy efficient home upgrade contractors: dataset insights
October 12, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
433 records in the displayed employee bands.
73 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
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 506 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: October 12, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for energy efficient home upgrade contractors?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many energy efficient home upgrade contractors did RevenueBase find based in Germany?
The saved snapshot records 506 matching company records, 1,298 tracked contacts and 336 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: October 12, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
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Cite this list
RevenueBase Data Team. Top 25 energy efficient home upgrade contractors based in Germany. Snapshot: October 12, 2026. https://revenuebase.ai/companies/energy-efficient-home-upgrade-contractors/germany.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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