Electricity savings are calculated as the global energy savings generated by all Grundfos A-labelled pumps sold between 2005 and 2011.
The estimate is based on the actual sales figures for the year and assumptions about which previous models the sold pumps replace. The figure is calculated as energy savings in kWh a year.
Since 2009 the savings have doubled. The total sale of A-pumps from 2005 up to 31 December 2011 has by the end of 2011 lead to energy savings of 1.5 billion kWh per year (2010: 1.1 billion kWh per year). The savings per year are accumulated as each pump leads to energy savings for several years.