Company lists · Data refreshed October 2026

Top 25 Energy efficiency nonprofits based in Germany

Name: Energy efficiency nonprofits based in Germany
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 12, 2026 174 companies tracked

RevenueBase identified 174 company matches for energy efficiency nonprofits associated with Germany as of October 2026 and tracks 1,959 professional contacts across them, including 983 with verified work emails. Berlin is the largest hub.

This list covers company matches for energy efficiency nonprofits 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.

How to read this list RevenueBase SmartSearch · Exact Recorded Oct 12, 2026 How this list was built

174Companies

1,959Contacts tracked

983Verified emails

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The 25 largest energy efficiency nonprofits based in Germany

Ranked by team size

Top 25 of 174 company matches for energy efficiency nonprofits based in Germany, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 12, 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Sonnen Gmbh	Exact match	Wildpoldsried, GermanyHQ recorded Oct 12, 2026	501-1,000	487 contacts →
	Exact match “Clean, affordable energy for all is one of the greatest challenges of our time.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
2	Thermondo	Exact match	Berlin, GermanyHQ recorded Oct 12, 2026	1,001-5,000	440 contacts →
	Exact match “Gemeinsam machen wir Wohnen klimaneutral!” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
3	TADO	Exact match	Munich, GermanyHQ recorded Oct 12, 2026	51-200	146 contacts →
	Exact match “At tado° we believe that unnecessarily wasting energy should be a thing of the past.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
4	TRAWA	Exact match	Berlin, GermanyHQ recorded Oct 12, 2026	51-200	136 contacts →
	Exact match “Make energy a driver of business success.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
5	Co2online Ggmbh NON Profit	Exact match	Berlin, GermanyHQ recorded Oct 12, 2026	51-200	51 contacts →
	Exact match “Klimaschutz ist die größte Herausforderung unserer Zeit.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
6	Berliner Energieagentur Gmbh BEA	Exact match	Berlin, GermanyHQ recorded Oct 12, 2026	11-50	34 contacts →
	Exact match “Die Berliner Energieagentur GmbH (BEA) ist ein modernes Energiedienstleistungsunternehmen.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
7	Effizienzpioniere	Exact match	Stuttgart, GermanyHQ recorded Oct 12, 2026	51-200	32 contacts →
	Exact match “Energy-efficient building renovations are complex.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
8	ASEW	Exact match	Cologne, GermanyHQ recorded Oct 12, 2026	11-50	29 contacts →
	Exact match “Die Arbeitsgemeinschaft für sparsame Energie- und Wasserverwendung (ASEW) ist das Effizienz-Netzwerk für Stadtwerke.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
9	Bremer Energie Konsens Gmbh, Bremen	Exact match	Bremen, GermanyHQ recorded Oct 12, 2026	11-50	27 contacts →
	Exact match “energiekonsens is the not-for-profit and independent climate protection agency of the Land Bremen.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
10	Deutsche Unternehmensinitiative Energieeffizienz E. V. Deneff	Exact match	Berlin, GermanyHQ recorded Oct 12, 2026	11-50	25 contacts →
	Exact match “Die Deutsche Unternehmensinitiative Energieeffizienz e.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
11	Carbonfreed	Exact match	Meldorf, GermanyHQ recorded Oct 12, 2026	11-50	24 contacts →
	Exact match “We are CarbonFreed.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
12	Encore Efficiency SE	Exact match	Osnabrück, GermanyHQ recorded Oct 12, 2026	11-50	19 contacts →
	Exact match “We take responsibility for the efficiency of energy supply for the entire life cycle of a project.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
13	Envidatec	Exact match	Hamburg, GermanyHQ recorded Oct 12, 2026	11-50	18 contacts →
	Exact match “Consulting businesses on Energy Efficiency and Renewable Energy UN Sustainable Development Goals and International Cooperation Envidatec offers consulting services on all things…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
14	Optenda	Exact match	Stuttgart, GermanyHQ recorded Oct 12, 2026	11-50	15 contacts →
	Exact match “OPTENDA steht für OPTimize ENergy by DAta.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
15	Energie Effizienz Profi	Exact match	Balve, GermanyHQ recorded Oct 12, 2026	11-50	12 contacts →
	Exact match “Seit sind wir Experten für die Beantragung von Förderanträgen.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
16	Werk.E Energie-Effizienz-Beratung	Exact match	Paderborn, GermanyHQ recorded Oct 12, 2026	11-50	12 contacts →
	Exact match “Menschen brauchen Energie.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
17	Energy-Center Gmbh	Exact match	Bochum, GermanyHQ recorded Oct 12, 2026	11-50	12 contacts →
	Exact match “Energy-Center ist ein junges Start-up mitten aus dem Herzen des Ruhrgebiets.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
18	Senercon Gmbh	Exact match	Berlin, GermanyHQ recorded Oct 12, 2026	11-50	9 contacts →
	Exact match “Die SEnerCon (SigmaEnergyConsulting) GmbH berät seit 1992 erfolgreich Hauseigentümer und Mieter bei der Senkung des Heizenergie- und Stromverbrauchs.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
19	Itgb Gmbh	Exact match	Dinslaken, GermanyHQ recorded Oct 12, 2026	11-50	9 contacts →
	Exact match “Es war Mitte der Siebzigerjahre, als ITGB gegründet wurde.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
20	Heliokraft	Exact match	Unterschleißheim, GermanyHQ recorded Oct 12, 2026	1-10	8 contacts →
	Exact match “Mit der Kraft der Sonne möchten wir unseren Beitrag für eine bessere Zukunft unserer Erde leisten – nur durch die effizientere Ausnutzung von Ressourcen und Flächen können wir…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
21	Nbrx AG	Exact match	Erfurt, GermanyHQ recorded Oct 12, 2026	1-10	7 contacts →
	Exact match “We are a startup based in Erfurt and Göttingen that would like to set key elements for sustainable energy efficiency Our goal: With professional know-how and the appropriate…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
22	Enion Energieberatung	Exact match	Berlin, GermanyHQ recorded Oct 12, 2026	11-50	6 contacts →
	Exact match “Sie möchten Ihre Immobilie umfassend sanieren?” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
23	20	Exact match	Berlin, GermanyHQ recorded Oct 12, 2026	1-10	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
24	Energiebüro Jenninger	Exact match	Bad Mergentheim, GermanyHQ recorded Oct 12, 2026	11-50	6 contacts →
	Exact match “Willkommen beim Energiebüro Jenninger aus Bad Mergentheim Seit fast 10 Jahren sind wir Ihr verlässlicher Partner für Energieeffizienz und Nachhaltigkeit.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
25	Schoofs Umwelt- UND Energieberatung Gmbh	Exact match	Kleve, GermanyHQ recorded Oct 12, 2026	1-10	5 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 · 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 efficiency nonprofits”. 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 174 energy efficiency nonprofits based in Germany

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Energy efficiency nonprofits based in Germany at a glance

As of Oct 12, 2026

50.2%Verified-email coverage

11.3Average contacts per company

1-10Median size (employees)

9.8%Largest-city concentration · Berlin

Oct 12, 2026Page data refreshed

Companies by employee count

1-10

121

11-50

51-200

201-500

501-1,000

1,001-5,000

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 174 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 efficiency nonprofits” 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 983 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 efficiency nonprofits”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many energy efficiency nonprofits are there based in Germany?

RevenueBase identified 174 company matches for energy efficiency nonprofits 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?

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

Which city has the most energy efficiency nonprofits?

Berlin leads with 17 company records, followed by Munich (11) and Hamburg (10).

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 983 professional contacts with verified work emails tracked across these 174 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.

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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.