Huge energy savings can be achieved when using variable speed drives on pumps in variable flow systems. However most systems are still equipped with fixed speed pumps due to first cost. For this reason, pump performance regulations are about to be adopted in EU and USA. These regulations comprise the combined unit consisting of the pump, motor and VSD i.e. the Extended Product. Methodologies have been developed which rates the Extended Product according to the overall efficiency. This presentation gives an overview of these regulations and highlights the differences between the US and EU regulation.