made in germany for the entire world

From our base in Frankfurt, Germany, we design, build and ship PV measurement technology worldwide. We manufacture strictly in compliance with ISO 9001 and ISO 14001 standards. Our product portfolio ranges from advanced IV testers for the mass production of solar modules to solutions for the entire photovoltaic chain. All instruments are supplied with state-of-the-art halm software. Our in-house development ensures the seamless operation of the equipment and offers leading-edge data visualization, analysis, and monitoring.

In addition to well-known PV manufacturers, our clients include many testing institutes such as TÜV Rheinland, Fraunhofer ISE, TÜV Süd, CPVT, PV EL, ISFH, and CFV.

halm is owner-operated and looks back on more than 20 years of experience in the PV metrology field. Our unmatched technology combined with meticulous attention to detail, exceptional customer service and unlimited product upgradeability have made us the undisputed technology leader in our field.

the halm philosophy in a nutshell: 
we create solutions!

halm – the story behind the name

Our company name is derived from the last names of our founders: H. Hellmann, H. Albert, A. Laux and A. Meixner. Four scientists who established the company in 1981 as an owner-run German technology company. Today the company is owned and run by brothers Moritz and Michael Meixner. Their strong affinity to Frankfurt ensures that R&D, sales and administration as well as in-house production will remain anchored in the Rhine-Main area in the future.


halm originally catered for several different sectors, including materials testing in the chemical, pharmaceutical and automotive industries, and also manufactured audio systems.

At the end of the 1990s, halm was one of the first German suppliers to enter the up-and-coming PV industry. With its IV tester for the production of solar cells and modules, the company soon captured a major share of the global market.

Today, halm can look back on more than 20 years of experience in PV measurement technology. The company is acknowledged internationally as a technology leader and one of the premium suppliers in this field.

All halm products are engineered and manufactured at the company's headquarters in Frankfurt, where about one-third of the employees are engaged in the development of state-of-the-art equipment and solutions.

strong products – strong support

For halm, excellent service is just as important as top-quality products. To achieve this, we have established a global support network that ensures a fast and constructive response. To assist our clients in implementing our products, we also offer purpose-built demo centers for cell and module measurement systems in Germany and China. Our integration partners include numerous renowned companies such as Applied Baccini, Folungwin, J&R, Maxwell and many more.

Moritz & Michael Meixner

halm is a family business with high ethical standards and a strong belief in the future of renewable energies

halm timeline

Before evolving into its current market specialization, halm was engaged in a multitude of other fields and sectors. As a result, the company looks back on a highly diversified and rich history of innovative solutions. This passion for tackling challenges and devising ingenious solutions still characterizes the company today and ensures that an unexpected solution to even the trickiest of cases can almost always be found!

This timeline presents the most significant events in the company's history and a small selection of the varied projects the company has implemented in its history.


There are now 100 of us in Frankfurt! And a further 15 employees at halm Suzhou!


Completion of new warehouse and assembly shop


Management takeover of company shares, halm once again owner-run company


Relocation to Friesstrasse


halm headcount reaches 50


halm founders withdraw from operative business. New management begins activities at start of year


Founding of Chinese subsidiary in Suzhou


Relocation to Burgstrasse


First systems installed in Asia (China, Korea & Taiwan)


Module test system with integrated module temperature control, ISFH


halm 20th anniversary, first PV projects implemented

First LED-flasher, Staffelstein Innovation Award 2001


Frauenkirche exhibit for EXPO 2000 Hanover, IO Lorke Hörner

1990 – 1999

Mattress measuring system for furniture stores, femira

1990 – 1998

Test stand 9000, underfloor pressure distribution of Testoval® laboratory, Conti Wietze


Multimedia installation, Springer-Passage Hamburg, Springer


cetisSMS, subway station announcements, RMV


cetisAKF/SMS, airport voice distribution with memory, Sittig

1991 – 1996

Speech recognition, NEC


cetis-NOWA standardized heat meter, Landis & Gyr


Speech management, Luxembourg Parliament, Sittig


Steering wheel measuring scales, Daimler


First salaried employee hired


PD16 underfoot pressure distribution, Nike


The partnership becomes a proper company and changes its legal form to a GmbH (limited liability company)


Flexitest, ski boot testing machine, Raichle


halm elektronik founded in Frankfurt by an engineer and three physicists as a GbR (partnership under civil law)