Modern, purpose built manufacturing and R&D facilities at Piller's Osterode headquarters in Germany, and purpose built assembly and testing facility at nearby Bilshausen, Germany are absolutely state-of-the-art. These facilities are widely regarded as the most comprehensive of their kind situated in 14 hectares with more than 50,000m² of accommodation.

The Bilshausen facility, which was built in 2001 houses state-of-the-art equipment for the assembly and test of Piller's renowned high-capacity diesel UNIBLOCK rotary range; the facility was expanded in 2009 significantly increasing the assembly areas and incorporating additional test bays capable of testing systems up to 3000kVA, making Bilshausen the most modern facility of its' kind anywhere.