This building demonstrates two important aspects of innovative construction: firstly, the contractor's requirements with regard to energy efficiency and occupant comfort are set very high, and secondly a particular financing model is applied: the "public private partnership", or PPP for short. The contractor (the Region of Hanover), despite a tight public budget, is able to build a consistently energy-optimised building for 300 staff.
more details PPP model for new Regionshaus building in Hanover