Wolfgang and Jost

Plexim is a global leader in simulation software for power electronic systems. Our software, PLECS, enables customers to speed up product development and innovation by reducing design time and cost.

Our leadership is based on the latest software technologies and simulation algorithms combined with pioneering concepts for modeling. By carefully listening to engineering experts, we offer our new solutions for our customers' needs, today and tomorrow.

Since 2002, our software is the industry standard for power electronics simulation across various industries. Typical applications are renewable energy, automotive, aerospace, industrial and traction drives, and power supplies. Our customers include market leaders such as ABB, Bombardier, Bosch, Danfoss, GE, Philips, Siemens and SMA.

With offices in Zurich and the Boston area, and the support of local representatives worldwide, we are always close to our customers. 


Plexim GmbH was founded as a spinoff company from the Swiss Federal Institute of Technology ETH Zurich in June 2002.  It was first hosted by the Power Systems Laboratory at the Department of Information Technology and Electrical Engineering.  In February 2005, the headquarters were moved to Technopark Zurich to accommodate the company's growth.

In April 2009, Plexim opened an office in Cambridge, Massachusetts to provide direct technical support to our North American customers.


Plexim's principal activity is the development and marketing of PLECS simulation software.  Plexim also regularly conducts seminars and hands-on workshops on simulation of power electronic systems.

Careers at Plexim

Plexim is growing rapidly.  We are continually looking for talented professionals in the field of power electronics to join our team. Please see our list of open positions!

Authorized Distributors

Plexim GmbH has many distributors around the world. For a complete list please visit our contact page.

"We congratulate Plexim on achieving life-time climate neutrality and thereby becoming a pioneer for climate action in their industry. We are delighted to be Plexim's sustainability partner on their climate leadership journey and are looking forward to future collaborations."
— Julia Hunziker, Sustainability Advisor at South Pole