Freqcon Freqcon is a systems integrator that is using Maxwell Technologies' supercapacitors to create 1 MW systems for grid stabilisation. Dr Lorenzo Grande interviewed Gregor Scheppelmann for an update. History -Freqcon is a German manufacturer of power converters and control systems for renewable energy systems and energy storage applications.
-The family-owned company was founded in 1988 and trades as Freqcon GmbH since 2005. Freqcon was one of the pioneering companies providing power electronics and controllers to the wind turbine industry.