Company lists · Data refreshed September 2026

Top 25 Energy efficiency program software based in Germany

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

Compiled by the RevenueBase Data Team Data refreshed Sep 2, 2026 322 companies tracked

RevenueBase identified 322 energy efficiency program software headquartered in Germany as of September 2026 and tracks 4,849 professional contacts across them, including 2,062 with verified work emails and 199 with mobile numbers. Berlin is the largest hub.

This list covers energy efficiency program software 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 2, 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 RevenueBase Smart Search rating on every row Refreshed Sep 2, 2026 86% judged on-target in blind review

322Companies

4,849Contacts tracked

2,062Verified emails

199Mobile numbers

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The 25 largest energy efficiency program software based in Germany

Ranked by team size

Top 25 of 322 energy efficiency program software based in Germany, ranked by team size, largest first. Data refreshed Sep 2, 2026. RevenueBase Smart Search rates how each company's information relates to energy efficiency program software: 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	PSI Software	Strong evidence	Berlin, Germany	1,001-5,000	443 contacts →
	Strong evidence “The PSI Group develops software products for optimizing the flow of energy and materials for utilities and industry.” Source: RevenueBase Database · checked Sep 2, 2026
2	Stem, INC	Partial evidence	Berlin, Germany	501-1,000	432 contacts →
	Partial evidence “At Stem, we’re reimagining technology to drive the energy transition.” Source: RevenueBase Database · checked Sep 2, 2026
3	Kisters Group	Indirect evidence	Aachen, Germany	501-1,000	363 contacts →
	Indirect evidence “KISTERS specialises in the collection, processing and reporting of environmental data from around the world, creating innovative and data-driven solutions that harness the power…” Source: RevenueBase Database · checked Sep 2, 2026
4	Janitza Electronics Gmbh	Partial evidence	Lahnau, Germany	501-1,000	264 contacts →
	Partial evidence “Janitza energy measurement technology Nowadays, energy management is not only relevant for the environment and for society but is also a critical competitive factor.” Source: RevenueBase Database · checked Sep 2, 2026
5	Schleupen SE	Strong evidence	Moers, Germany	501-1,000	253 contacts →
	Strong evidence “With around 450 employees at five national locations, Schleupen SE is one of the leading innovative software manufacturers in the fields of energy and water management (EWW) as…” Source: RevenueBase Database · checked Sep 2, 2026
6	Soptim AG	Partial evidence	Aachen, Germany	201-500	211 contacts →
	Partial evidence “Our heart has been beating for the energy industry for over fifty years now.” Source: RevenueBase Database · checked Sep 2, 2026
7	TADO	Partial evidence	Munchen, Germany	51-200	160 contacts →
	Partial evidence “At tado° we believe that unnecessarily wasting energy should be a thing of the past.” Source: RevenueBase Database · checked Sep 2, 2026
8	Advizeo	Partial evidence	Berlin, Germany	51-200	148 contacts →
	Partial evidence “advizeo supports companies and local authorities in reducing the energy consumption of their buildings.” Source: RevenueBase Database · checked Sep 2, 2026
9	Lynqtech	Partial evidence	Hannover, Germany	51-200	89 contacts →
	Partial evidence “LYNQTECH verbindet modernstes Tech-Know-how mit langjährigem Wissen aus der Energiewirtschaft - und gibt damit die Antwort auf eine immer komplexer werdende Energiewelt.” Source: RevenueBase Database · checked Sep 2, 2026
10	Alfa Energy An Edison Energy Company	Partial evidence	Germany	201-500	89 contacts →
	Partial evidence “Alfa Energy Group (an Edison Energy company) is an international energy, sustainability and technology consultant partner with 200 employees over four international locations.” Source: RevenueBase Database · checked Sep 2, 2026
11	Ecoplanet	Strong evidence	Munich, Germany	51-200	82 contacts →
	Strong evidence “ecoplanet ist die weltweite erste Software für integriertes Energiemanagement: Verbrauchssteuerung, intelligente Beschaffung und Regulatorik an einem Ort & KI-basiert optimiert.” Source: RevenueBase Database · checked Sep 2, 2026
12	Green Fusion	Partial evidence	Hohen Neuendorf, Germany	51-200	81 contacts →
	Partial evidence “The energy-saving pilot for all boiler rooms.” Source: RevenueBase Database · checked Sep 2, 2026
13	TANSO	Partial evidence	Munich, Germany	51-200	67 contacts →
	Partial evidence “Tanso is the ESG and carbon accounting software that industrial companies in DACH rely on to stay competitive and compliant.” Source: RevenueBase Database · checked Sep 2, 2026
14	Limón Gmbh	Partial evidence	Kassel, Germany	51-200	55 contacts →
	Partial evidence “Limón ist Ihr Dienstleister und Lösungsanbieter für Energieeffizienz in der Industrie.” Source: RevenueBase Database · checked Sep 2, 2026
15	Metiundo Gmbh	Indirect evidence	Berlin, Germany	51-200	55 contacts →
	Indirect evidence “CO2 emissions in the real estate sector must be reduced quickly.” Source: RevenueBase Database · checked Sep 2, 2026
16	Klafka & Hinz Energie-Informations-Systeme Gmbh	Strong evidence	Aachen, Germany	51-200	55 contacts →
	Strong evidence “Willkommen bei FirstX, der innovativen Softwareplattform von Klafka & Hinz Energie-Informations-Systeme GmbH.” Source: RevenueBase Database · checked Sep 2, 2026
17	Ökotec Energiemanagement Gmbh	Partial evidence	Berlin, Germany	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 2, 2026
18	Enoplan Gmbh	Partial evidence	Bruchsal, Germany	51-200	44 contacts →
	Partial evidence “Wir bei Enoplan haben es uns zur Aufgabe gemacht, Unternehmen beim Thema Energie Transparenz und Sicherheit zu geben.” Source: RevenueBase Database · checked Sep 2, 2026
19	Betterspace Gmbh	Partial evidence	Ilmenau, Germany	51-200	42 contacts →
	Partial evidence “Betterspace develops smart software solutions that make your day-to-day work easier.” Source: RevenueBase Database · checked Sep 2, 2026
20	Seven2one Informationssysteme Gmbh	Strong evidence	Karlsruhe, Germany	11-50	39 contacts →
	Strong evidence “INDIVIDUALIZED SOFTWARE FOR THE ENERGY TOPICS OF THE FUTURE Seven2one is passionate about developing software for a sustainable energy world The solution is our focus.” Source: RevenueBase Database · checked Sep 2, 2026
21	Consolinno Energy Gmbh	Indirect evidence	Regensburg, Germany	51-200	38 contacts →
	Indirect evidence “Wir sind ein junges, schnell wachsendes Unternehmen und entwickeln seit 2017 innovative Lösungen in Regensburg.” Source: RevenueBase Database · checked Sep 2, 2026
22	Metr Building Management Systems Gmbh	Strong evidence	Berlin, Germany	11-50	37 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 2, 2026
23	Global Climate	Partial evidence	Munchen, Germany	11-50	33 contacts →
	Partial evidence “Turning Data into Value – Aus CO₂-Daten wird unternehmerischer Mehrwert GLOBAL CLIMATE ist Softwareanbieter und Nachhaltigkeitsberatung in einem.” Source: RevenueBase Database · checked Sep 2, 2026
24	Ingsoft Gmbh	Strong evidence	Nurnberg, Germany	51-200	30 contacts →
	Strong evidence “IngSoft is a pioneer in software-engineering for effective and long-term energy management in accordance with ISO With its intelligent software solution IngSoft InterWatt, the…” Source: RevenueBase Database · checked Sep 2, 2026
25	Kühn Elektrotechnik Gmbh	Partial evidence	Renchen, Germany	51-200	28 contacts →
	Partial evidence “Energieeffizienzmaßnahmen sind nicht immer mit hohen Investitionen verbunden.” Source: RevenueBase Database · checked Sep 2, 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 program software. 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 program software.
Partial evidence: Its own public description names part of energy efficiency program software, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name energy efficiency program software. 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 322 energy efficiency program software based in Germany

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Energy efficiency program software based in Germany at a glance

As of Sep 2, 2026

42.5%Verified-email coverage

4.1%Mobile-number coverage

15.1Average contacts per company

1-10Median size (employees)

10.2%Largest-city concentration · Berlin

Sep 2, 2026Page data refreshed

Companies by employee count

1-10

168

11-50

107

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

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 program software, 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 program software”. 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 program software), 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 program software, 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, 2,062 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 2, 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 program software by metro

Energy efficiency program software in Berlin33

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 program software, 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 program software are there based in Germany?

RevenueBase identified 322 energy efficiency program software 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?

PSI Software, headquartered in Berlin, tops this list with the largest team on record.

Which city has the most energy efficiency program software?

Berlin leads with 33 headquartered companies, followed by Stuttgart (11) and Munich (10).

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 2,062 verified decision-maker contacts tracked across these 322 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 2, 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.