Building a bridge from the past to the future of power supply. A guest article by Dr. Nicolas Maier-Scheubeck, Managing Director of Reinhausen for the past 30 years.
The roots of Reinhausen GmbH date back to 1868. What began as a mechanical repair shop evolved into a machine factory and eventually became a global market leader in technically sophisticated niches of electrical power engineering. Today, under the MR brand, the company offers innovative products and solutions to ensure power flow, power quality, and the availability of critical grid assets for manufacturers, commissioning engineers, and operators.
The company has been dedicated to electrical power engineering since 1929. In doing so, the company – then operating under the name Maschinenfabrik Reinhausen Andreas Scheubeck – benefited from close collaboration with the inventor Dr. Bernhard Jansen. In 1925, he had written his dissertation titled “On the Economic Efficiency of Interconnection Lines Between Large Power Supply Areas”.
In just over two years, he laid the technical foundations for today’s high-speed resistor-type tap-changer through four groundbreaking patents. The seamless interconnection of power grids was a lifelong passion for the engineer, who later became CEO of a regional energy utility. By the time of his untimely death in 1958, he had obtained a total of 157 international patents. At the same time, he organized their implementation by manufacturers and operators of power transformers.

Progress always needs a pioneer to get it rolling, but it also needs tradition to serve as a foundation.
Progress always needs a pioneer to get it rolling, but it also needs tradition to serve as a foundation. In an era of interconnected power grids, Dr. Jansen knew how to establish his inventions as technical standards – despite the reservations of a conservative industry and competing concepts. The basic principle described in his patents for the stepwise regulation of transformers under load remains indispensable to this day for the safe and economical operation of a power supply system organized by voltage levels. In addition, he ensured that transformer manufacturers would be supplied by what is now Reinhausen GmbH.
The current challenges of the energy transition often raise similar questions to those posed 100 years ago. Following the global push toward non-fossil and more decentralized energy generation, the focus is shifting toward storage and grid technologies. By 2050, global electricity demand is projected to grow by 80 percent, transmission and distribution grids are expected to expand by 120 percent, and annual demand for transformers is forecast to increase by 200 percent.
In addition to unplanned performance demands on the installed base (asset management), there is the accelerated expansion of infrastructure (quality and logistics) as well as the support of entirely new applications (battery energy storage, data centers). This calls for a solution-oriented combination of mechatronics and power electronics, sensor technology and communications technology, as well as analytics and digitalization – all working in tandem with consulting, engineering, manufacturing, commissioning, and service.

We remain the consistently independent and reliable partner to manufacturers, commissioning engineers, and operators of critical grid infrastructure.
It is precisely in this comprehensive sense that Reinhausen GmbH’s heart beats at 60 locations worldwide through its 6,000 skilled employees. Driven by our self-image as “The Power behind Power”, we are consistently carrying forward into the future our application- and innovationoriented approach – practiced for nearly 100 years – along with the highest standards of quality and logistics performance.
The circular MR logo has long since ceased to represent the historical company abbreviation of a manufacturer of tap changers (“Maschinenfabrik Reinhausen”) and now stands for the forward-looking performance promise of a comprehensive solutions provider (“Made by Reinhausen”). In doing so, we remain the consistently independent and reliable partner to manufacturers, commissioning engineers, and operators of critical grid infrastructure. Together, we regulate the all-electric society.
About the author
For three decades, Dr. Nicolas Maier-Scheubeck (born in 1961) has played a key role in shaping the REINHAUSEN Group. After completing his studies and serving as a research assistant, he worked in industry and management consulting. Since joining Reinhausen GmbH in April 1996, he has helped position the company as a global market and technology leader in demanding niches of electrical power engineering. At the end of July 2026, he will step down from the Executive Board at his own request but will remain connected to the long-established family-owned company. Starting in August 2026, Wilfried Breuer will serve as spokesperson for the management board that will continue to consist of three members, which will then include – in addition to Holger Michalka – Dr. Manuel Sojer.


