What difference does Grundfos CR efficiency make?

Grundfos CR versus an average multistage pump:

Application		Typical duty point		Operating hours per day		Average kWh reduction per year with CR
Water supply		350 gpm @85 psi		24 hours		18,500 kWh
Boiler feed		175 gpm @225 psi		15 hours		12,700 kWh
Water treatment		10 gpm @225 psi		15 hours		3,200 kWh
Industrial washing and cleaning		25 gpm @225 psi		5 hours		1,600 kWh
General industrial pump task		25 gpm @145 psi		10 hours		2,200 kWh