Company lists · Data refreshed September 2026

Top 25 Photovoltaic research and development companies based in Germany

Name: Photovoltaic research and development companies based in Germany
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 16, 2026 284 companies tracked

RevenueBase identified 284 photovoltaic research and development companies headquartered in Germany as of September 2026 and tracks 6,543 professional contacts across them, including 1,641 with verified work emails. Berlin is the largest hub.

This list covers photovoltaic research and development companies 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

284Companies

6,543Contacts tracked

1,641Verified emails

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The 25 largest photovoltaic research and development companies based in Germany

Ranked by team size

Top 25 of 284 photovoltaic research and development companies 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 photovoltaic research and development companies: 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	Fraunhofer-Institut FÜR Solare Energiesysteme ISE	Partial evidence	Freiburg, GermanyHQ checked Sep 16, 2026	1,001-5,000	894 contacts →
	Partial evidence “The Fraunhofer Institute for Solar Energy Systems ISE in Freiburg, Germany is the largest solar research institute in Europe.” Source: RevenueBase Database · checked Sep 16, 2026
2	IB Vogt Gmbh	Indirect evidence	Berlin, GermanyHQ checked Sep 16, 2026	501-1,000	784 contacts →
	Indirect evidence “ib vogt is firmly committed to supporting the decarbonisation of the global electricity sector.” Source: RevenueBase Database · checked Sep 16, 2026
3	Goldbeck Solar Group	Partial evidence	Hirschberg An Der Bergstraße, GermanyHQ checked Sep 16, 2026	501-1,000	336 contacts →
	Partial evidence “GOLDBECK SOLAR is an internationally leading company specializing in the turnkey construction of industrial, commercial, and large‑scale photovoltaic systems.” Source: RevenueBase Database · checked Sep 16, 2026
4	Centrotherm International AG	Indirect evidence	Blaubeuren, GermanyHQ checked Sep 16, 2026	501-1,000	318 contacts →
	Indirect evidence “Thermische Produktionslösungen und Beschichtungstechnologien zählen zu den Kernkompetenzen von centrotherm.” Source: RevenueBase Database · checked Sep 16, 2026
5	Enerparc AG	Partial evidence	Hamburg, GermanyHQ checked Sep 16, 2026	201-500	305 contacts →
	Partial evidence “ENERPARC AG is an internationally oriented specialist for all business related to photovoltaics, whether it's in a technical or commercial role, pure consultation or…” Source: RevenueBase Database · checked Sep 16, 2026
6	Zentrum FÜR Sonnenenergie- UND Wasserstoff-Forschung Baden-Württemberg ZSW	Partial evidence	Stuttgart, GermanyHQ checked Sep 16, 2026	201-500	168 contacts →
	Partial evidence “The Zentrum für Sonnenenergie-und Wasserstoff-Forschung Baden-Württemberg (Centre for Solar Energy and Hydrogen Research Baden-Württemberg, ZSW) is one of the leading institutes…” Source: RevenueBase Database · checked Sep 16, 2026
7	Aesolar	Indirect evidence	Gersthofen, GermanyHQ checked Sep 16, 2026	501-1,000	117 contacts →
	Indirect evidence “AESOLAR, The German TIER 1 brand has proven itself to be a dynamic and progressive enterprise, the leading privately-owned business since its inception in 2003.” Source: RevenueBase Database · checked Sep 16, 2026
8	Avancis Gmbh	Indirect evidence	Torgau, GermanyHQ checked Sep 16, 2026	201-500	85 contacts →
	Indirect evidence “We provide technologies for the energy of the future.” Source: RevenueBase Database · checked Sep 16, 2026
9	Kiwa PI Berlin	Partial evidence	Berlin, GermanyHQ checked Sep 16, 2026	51-200	84 contacts →
	Partial evidence “Kiwa PI Berlin \| Independent Experts in Photovoltaics At Kiwa PI Berlin, we specialize in providing independent, customer-focused support for solar energy projects-from the…” Source: RevenueBase Database · checked Sep 16, 2026
10	Viridi RE Group	Strong evidence	Neckarsulm, GermanyHQ checked Sep 16, 2026	51-200	77 contacts →
	Strong evidence “The Viridi RE Group (Viridi RE GmbH and its subsidiaries) is dedicated to the development of Photovoltaic (PV) Power Plants with a strong EPC background (engineering, procurement…” Source: RevenueBase Database · checked Sep 16, 2026
11	Azur Space Solar Power Gmbh	Indirect evidence	Heilbronn, GermanyHQ checked Sep 16, 2026	201-500	71 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 16, 2026
12	Nexwafe	Indirect evidence	Freiburg Im Breisgau, GermanyHQ checked Sep 16, 2026	51-200	67 contacts →
	Indirect evidence “NexWafe, based in Freiburg, is commercializing an engineered green solar wafer production process to make the PV industry more sustainable.” Source: RevenueBase Database · checked Sep 16, 2026
13	WI Energy Gmbh	Indirect evidence	Trier, GermanyHQ checked Sep 16, 2026	51-200	55 contacts →
	Indirect evidence “Alle sprechen von der Energiewende.” Source: RevenueBase Database · checked Sep 16, 2026
14	Isfh Institut FÜR Solarenergieforschung Hameln	Partial evidence	Emmerthal, GermanyHQ checked Sep 16, 2026	51-200	55 contacts →
	Partial evidence “Am ISFH - Institut für Solarenergieforschung Hameln werden innovative Komponenten für die photovoltaische sowie solarthermische Nutzung der Sonnenenergie entwickelt.” Source: RevenueBase Database · checked Sep 16, 2026
15	Halm Elektronik Gmbh	Indirect evidence	Frankfurt Am Main, GermanyHQ checked Sep 16, 2026	51-200	49 contacts →
	Indirect evidence “halm elektronik is the world leading supplier of measurement solutions for the pv industry.” Source: RevenueBase Database · checked Sep 16, 2026
16	ISC Konstanz	Partial evidence	Konstanz, GermanyHQ checked Sep 16, 2026	51-200	48 contacts →
	Partial evidence “The International Solar Energy Research Center Konstanz e.V.(ISC Konstanz) researches and develops crystalline silicon solar cells, solar modules and energy systems.” Source: RevenueBase Database · checked Sep 16, 2026
17	Sinn Power	Indirect evidence	Gauting, GermanyHQ checked Sep 16, 2026	11-50	40 contacts →
	Indirect evidence “SINN Power versorgt die Welt mit erneuerbarer Energie – auf dem Land und auf dem Wasser.” Source: RevenueBase Database · checked Sep 16, 2026
18	RCT Solutions Gmbh	Partial evidence	Constance, GermanyHQ checked Sep 16, 2026	51-200	36 contacts →
	Partial evidence “RCT Solutions GmbH covers the full range of photovoltaic value chain providing customised services from FEED & owner's engineering to business & financial modeling and PV…” Source: RevenueBase Database · checked Sep 16, 2026
19	Wirsol Roof Solutions	Partial evidence	Waghäusel, GermanyHQ checked Sep 16, 2026	51-200	35 contacts →
	Partial evidence “WIRSOL Roof Solutions – Die Experten für Photovoltaik Als traditionsreiches, mittelständisches Unternehmen helfen wir Gewerbebetrieben, Privathaushalten und Kommunen dabei…” Source: RevenueBase Database · checked Sep 16, 2026
20	ESG Energy Service Group	Indirect evidence	Trollenhagen, GermanyHQ checked Sep 16, 2026	51-200	34 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 16, 2026
21	Freqcon Gmbh	Indirect evidence	Rethem, GermanyHQ checked Sep 16, 2026	51-200	32 contacts →
	Indirect evidence “FREQCON is one of the leading German manufacturers of power converters and control systems for renewable energy systems and energy storage applications.” Source: RevenueBase Database · checked Sep 16, 2026
22	Access To Energy Institute	Strong evidence	Berlin, GermanyHQ checked Sep 16, 2026	11-50	31 contacts →
	Strong evidence “The Access to Energy Institute (A2EI) is the first not-for-profit and collaborative research and development institute aiming to advance the solar revolution in emerging economies.” Source: RevenueBase Database · checked Sep 16, 2026
23	Home Of Solar	Indirect evidence	Hamburg, GermanyHQ checked Sep 16, 2026	11-50	30 contacts →
	Indirect evidence “Home of Solar ist Ihr Partner für großflächige PV-Anlagen.” Source: RevenueBase Database · checked Sep 16, 2026
24	Maxx Solar & Energie Gmbh & Co. KG	Partial evidence	Waltershausen, GermanyHQ checked Sep 16, 2026	51-200	27 contacts →
	Partial evidence “maxx-solar & energie, your specialist for photovoltaic plants in Central Germany Since foundation of maxx-solar in 2008, we have become specialist in solar energy production for…” Source: RevenueBase Database · checked Sep 16, 2026
25	Blis Solar Gmbh	Partial evidence	Hannover, GermanyHQ checked Sep 16, 2026	51-200	27 contacts →
	Partial evidence “BLIS Solar realisiert seit 2006 Photovoltaikprojekte für Industrie- und Gewerbekunden.” 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: photovoltaic research and development companies. 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 photovoltaic research and development companies.
Partial evidence: Its own public description names part of photovoltaic research and development companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name photovoltaic research and development companies. 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 284 photovoltaic research and development companies based in Germany

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Photovoltaic research and development companies based in Germany at a glance

As of Sep 16, 2026

25.1%Verified-email coverage

23.0Average contacts per company

11-50Median size (employees)

8.8%Largest-city concentration · Berlin

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

130

11-50

51-200

201-500

501-1,000

1,001-5,000

10001+

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 284 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 photovoltaic research and development companies, 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 “photovoltaic research and development companies”. 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 photovoltaic research and development companies), 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 photovoltaic research and development companies, 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, 1,641 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.

Photovoltaic research and development companies by metro

Photovoltaic research and development companies in Berlin25

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 photovoltaic research and development companies, 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 photovoltaic research and development companies are there based in Germany?

RevenueBase identified 284 photovoltaic research and development companies 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?

Fraunhofer-Institut FÜR Solare Energiesysteme ISE, headquartered in Freiburg, tops this list with the largest team on record.

Which city has the most photovoltaic research and development companies?

Berlin leads with 25 headquartered companies, followed by Hamburg (15) and Stuttgart (8).

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 1,641 verified decision-maker contacts tracked across these 284 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.