Intermatic timer hardwired into my breaker box. Runs from 10 PM to 4 AM each night because the rates are 50% less. I have a 2 speed pump and run it on low speed which means it takes just 1/4 or so of the electrical power. I cannot tell in the summers that my pool pump is added to the load because the A/C uses ever so much more power. I run the pump on low speed for an hour or so after a swim session to skim the dog hair off the surface. The timer has definitely improved my life. I don't have to remember to do yet another thing