Founded by the German engineer Anton Piller in 1909, more than a century on Piller is No. 1 in High End Power Protection. Today the company has subsidiaries across Europe, the Americas, Asia and Australia and employs approaching 1000 people worldwide.
In November 2016, Piller Power Systems Inc, the US subsidiary of Piller Group GmbH, acquired the assets and business of Active Power Inc, the US kinetic energy storage specialist.