Company lists · Data refreshed September 2026

Top 25 Energy efficiency contractors based in Germany

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

Compiled by the RevenueBase Data Team Data refreshed Sep 16, 2026 479 companies tracked

RevenueBase identified 479 energy efficiency contractors headquartered in Germany as of September 2026 and tracks 1,787 professional contacts across them, including 656 with verified work emails. Berlin is the largest hub.

This list covers energy efficiency contractors 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

479Companies

1,787Contacts tracked

656Verified emails

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The 25 largest energy efficiency contractors based in Germany

Ranked by team size

Top 25 of 479 energy efficiency contractors 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 energy efficiency contractors: 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	Enloc AG	Partial evidence	Dresden, GermanyHQ checked Sep 16, 2026	51-200	80 contacts →
	Partial evidence “ENLOC – Energiedienstleister der Wohnungswirtschaft Die Enloc bietet innovative Lösungen unter Einbeziehung erneuerbarer Energien im Rahmen der Wärmelieferung/Contracting.” Source: RevenueBase Database · checked Sep 16, 2026
2	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
3	Wolff & Müller Energy Gmbh	Partial evidence	Ludwigsburg, GermanyHQ checked Sep 16, 2026	51-200	49 contacts →
	Partial evidence “WOLFF & MÜLLER ENERGY GMBH ist Teil der traditionsreichen Unternehmensgruppe WOLFF & MÜLLER, einem mittelständischen Familienunternehmen mit Stammsitz in Stuttgart.” Source: RevenueBase Database · checked Sep 16, 2026
4	42watt	Strong evidence	Munich, GermanyHQ checked Sep 16, 2026	51-200	47 contacts →
	Strong 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
5	Ökotec Energiemanagement Gmbh	Partial evidence	Berlin, GermanyHQ checked Sep 16, 2026	51-200	46 contacts →
	Partial 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
6	Präg Gruppe	Partial evidence	Kempten (allgäu), GermanyHQ checked Sep 16, 2026	201-500	45 contacts →
	Partial evidence “ENERGIE IN VIELEN FACETTEN PRÄG berät seine Kunden in allen Energiefragen und deckt die gesamte Bandbreite des Energiebedarfs ab: von der Mobilität, über die Wärmeversorgung, bis…” Source: RevenueBase Database · checked Sep 16, 2026
7	Berliner Energieagentur Gmbh BEA	Partial evidence	Berlin, GermanyHQ checked Sep 16, 2026	11-50	35 contacts →
	Partial evidence “Die Berliner Energieagentur GmbH (BEA) ist ein modernes Energiedienstleistungsunternehmen.” Source: RevenueBase Database · checked Sep 16, 2026
8	Renewa Gmbh	Partial evidence	Hamburg, GermanyHQ checked Sep 16, 2026	51-200	29 contacts →
	Partial evidence “RENEWA ist dein unabhängiger Partner für energetische Sanierung.” Source: RevenueBase Database · checked Sep 16, 2026
9	Kühn Elektrotechnik Gmbh	Partial evidence	Karlsruhe, GermanyHQ checked Sep 16, 2026	51-200	29 contacts →
	Partial evidence “Energieeffizienzmaßnahmen sind nicht immer mit hohen Investitionen verbunden.” Source: RevenueBase Database · checked Sep 16, 2026
10	Effizienzpioniere	Strong evidence	Stuttgart, GermanyHQ checked Sep 16, 2026	51-200	27 contacts →
	Strong evidence “Energy-efficient building renovations are complex.” Source: RevenueBase Database · checked Sep 16, 2026
11	Sunshine Energieberatung Gmbh	Partial evidence	Hannover, GermanyHQ checked Sep 16, 2026	51-200	22 contacts →
	Partial evidence “Wir sind seit 2009 spezialisierter Dienstleister im Bereich der Energie- und Fördergeldberatung mit einer Vielzahl namhafter Kunden aller Gewerke.” Source: RevenueBase Database · checked Sep 16, 2026
12	Encadi Gmbh	Partial evidence	Münster, GermanyHQ checked Sep 16, 2026	11-50	21 contacts →
	Partial evidence “Sind Ihnen Ihre Energiekosten ein Dorn im Auge?” Source: RevenueBase Database · checked Sep 16, 2026
13	Etanomics Service Gmbh	Indirect evidence	Neu-isenburg, GermanyHQ checked Sep 16, 2026	11-50	20 contacts →
	Indirect evidence “Die Etanomics Service GmbH wurde gegründet aus dem Nachhaltigkeitsprojekt „Effizienz Plus" der Viessmann Group: Mit unserer Hilfe wurde der Verbrauch von Öl und Gas um 60 Prozent…” Source: RevenueBase Database · checked Sep 16, 2026
14	PERTO	Strong evidence	Berlin, GermanyHQ checked Sep 16, 2026	11-50	19 contacts →
	Strong evidence “perto is an energy efficiency service provider for large properties.” Source: RevenueBase Database · checked Sep 16, 2026
15	Envidatec	Strong evidence	Hamburg, GermanyHQ checked Sep 16, 2026	11-50	18 contacts →
	Strong evidence “Consulting businesses on Energy Efficiency and Renewable Energy UN Sustainable Development Goals and International Cooperation Envidatec offers consulting services on all things…” Source: RevenueBase Database · checked Sep 16, 2026
16	Meerx Group Gmbh	Partial evidence	Oberhausen, GermanyHQ checked Sep 16, 2026	11-50	18 contacts →
	Partial evidence “MEERX ist Effizienzdienstleister in den Bereichen Energieeffizienz, Einkauf und Prozessdigitalisierung.” Source: RevenueBase Database · checked Sep 16, 2026
17	Encore Efficiency SE	Strong evidence	Osnabrück, GermanyHQ checked Sep 16, 2026	11-50	16 contacts →
	Strong evidence “We take responsibility for the efficiency of energy supply for the entire life cycle of a project.” Source: RevenueBase Database · checked Sep 16, 2026
18	Energieberater IM Land Brandenburg Gmbh	Partial evidence	Potsdam, GermanyHQ checked Sep 16, 2026	11-50	15 contacts →
	Partial evidence “Als Energieberater decken wir alle Aspekte deines Bauvorhabens ab, von der Planung bis hin zur Inbetriebnahme sowie dem Nachtrags- und Mängelmanagement.” Source: RevenueBase Database · checked Sep 16, 2026
19	En-Concept Energy Consultancy Gmbh	Partial evidence	Offenburg, GermanyHQ checked Sep 16, 2026	11-50	15 contacts →
	Partial evidence “En-Concept Energy Consultancy GmbH – Ihr Partner für nachhaltiges Energiemanagement Die En-Concept Energy Consultancy GmbH unterstützt Unternehmen aller Branchen und…” Source: RevenueBase Database · checked Sep 16, 2026
20	Energy Partners Gmbh	Partial evidence	Traunstein, GermanyHQ checked Sep 16, 2026	11-50	15 contacts →
	Partial evidence “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.” Source: RevenueBase Database · checked Sep 16, 2026
21	Energie Effizienz Profi	Indirect evidence	Balve, GermanyHQ checked Sep 16, 2026	11-50	13 contacts →
	Indirect evidence “Seit sind wir Experten für die Beantragung von Förderanträgen.” Source: RevenueBase Database · checked Sep 16, 2026
22	TGA Bodensee Gmbh	Partial evidence	Salem, GermanyHQ checked Sep 16, 2026	51-200	13 contacts →
	Partial evidence “tga bodensee GmbH ist ein Unternehmen, das die Beratung und Umsetzung von zukunftsweisender Haus- und Energietechnik sowohl für Privat- als auch Gewerbekunden anbietet.” Source: RevenueBase Database · checked Sep 16, 2026
23	Werk.E Energie-Effizienz-Beratung	Partial evidence	Paderborn, GermanyHQ checked Sep 16, 2026	11-50	12 contacts →
	Partial evidence “Menschen brauchen Energie.” Source: RevenueBase Database · checked Sep 16, 2026
24	Senercon Gmbh	Indirect evidence	Berlin, GermanyHQ checked Sep 16, 2026	11-50	10 contacts →
	Indirect evidence “Die SEnerCon (SigmaEnergyConsulting) GmbH berät seit 1992 erfolgreich Hauseigentümer und Mieter bei der Senkung des Heizenergie- und Stromverbrauchs.” Source: RevenueBase Database · checked Sep 16, 2026
25	JM Projektinvest Gmbh & Co. KG	Partial evidence	Magdeburg, GermanyHQ checked Sep 16, 2026	11-50	10 contacts →
	Partial evidence “Die JM Unternehmensgruppe ist seit ihrer Gründung 2010 spezialisiert auf die Entwicklung, den Bau, den Betrieb und die Finanzierung von Energieeffizienzprojekten.” 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: energy efficiency contractors. 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 energy efficiency contractors.
Partial evidence: Its own public description names part of energy efficiency contractors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name energy efficiency contractors. 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 479 energy efficiency contractors based in Germany

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Energy efficiency contractors based in Germany at a glance

As of Sep 16, 2026

36.7%Verified-email coverage

3.7Average contacts per company

1-10Median size (employees)

7.9%Largest-city concentration · Berlin

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

357

11-50

51-200

201-500

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 479 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 energy efficiency contractors, 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 “energy efficiency contractors”. 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 energy efficiency contractors), 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 energy efficiency contractors, 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, 656 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.

Energy efficiency contractors by metro

Energy efficiency contractors in Berlin38

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 energy efficiency contractors, 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 energy efficiency contractors are there based in Germany?

RevenueBase identified 479 energy efficiency contractors 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?

Enloc AG, headquartered in Dresden, tops this list with the largest team on record.

Which city has the most energy efficiency contractors?

Berlin leads with 38 headquartered companies, followed by Hamburg (22) and Koln (11).

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 656 verified decision-maker contacts tracked across these 479 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.