I understand what you mean about the Pentair calculator, however You can do the math yourself as well. I am getting 580 watts to get 40 GPM flow now, I was getting 50 GPM but down sized my return eyes to keep the pressure up for my chlorinator. So I get a complete turn in about 16 hours. This should cost me under a buck a day. My neighbor runs his pumps for 9 hours @ 70 GPM @ 5.4 amps to turn almost the same water. 38K gallons vs. my 39.4k gallons. Note these #’s are from memory which is questionable at times. I have done the math before and I saw savings of approx 50% per day of what my neighbor is using. So the savings is there, but who knows where power cost will be next year. Right now the power rates are coming down again, but just a little.

The 4x160 is also a little cheaper. If I was not going to go with a full Intellitouch system I would have gone the 4x160 route. Honestly you just use about 3-4 settings anyway. You can program the 4x160 to do what you want without the monitoring functions. According to the Pentair rep the equation was simple. Slower flow = more efficient power consumption. So I use more hours but at a much lower flow rate and lower power consumption.

If not an Intelliflo I would definitely look into two speed pumps or energy efficient pumps. Remember this sucker runs 7 days a week 6-10 hours a day and even more in the summer.