First a little background...
I'm looking to add a grid tied solar system to the house that provides 100% of my yearly kWh use. This has nothing to do with the pool except that the solar array needs to be sized to account for whatever power the pool equipment uses.
The pool is small, approx 10,000 gallons, sand filter, salt generator, and in floor pop-up cleaning. The current pump is 1hp (3450rpm) which I've calculated to use about 1.9kWh (This roughly matches the hourly utility usage data). The pump runs for approx 5 hours per day which puts the annual power use at around 3600 kWh. Thats a rather large amount of power and by reducing it I can save money on the solar system by reducing it's size.
I'm looking at either the Intelliflo or Ecostar variable speed pumps which both appear to use far less electricty. From what I've been able to gather running either of these pumps at 1000 - 1500 should be enough for everything but the in floor cleaning and at those speeds would save a significant amount of power even if run all day long. I'm assuming that both the Pentair and Hayward power calculators use these low speeds in their calculations.
The piece I'm unsure of is how fast the pump will need to go for the in floor cleaning to operate and how much electricity would be used at that speed. Also I'm not sure how long the in floor cleaning needs to be run each day?
I'm currently guessing with 2 hours of infloor cleaning at 2720 watts (not sure why this would be higher than my current pump though) + 10 hours filtering at 200 watts. This leaves me at roughtly 7.5kWh per day which only about 13% less than the currnet 9.5kWh. Does this sound even remotely close?