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Thread: How to calculate energy costs for pump

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    How to calculate energy costs for pump

    Does anyone have a method for calculating cost per hour to run a pool pump? I'd also like to figure out how to estimate the savings if I install a 2 speed pump. I currently have a 2HP Jandy Stealth.


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    Mod Squad Bama Rambler's Avatar
    Join Date
    Jun 2009
    SouthWest Alabama

    Re: How to calculate energy costs for pump

    It's actually pretty easy to figure. Take volts x amps = watts, watts / 1000 = kilowatts, kilowatts x hours running = KWH's (kiolwatt/hours), KWH's x your electric cost per KWH = cost.

    You can figure it by any time frame you want (hour, day, week, month, etc.). It gets a little trickier if your electric utility has stepped rates. Then you have to figure out when the pump will be running and what the breakdown of charges will be.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
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    mas985's Avatar
    Join Date
    May 2007
    Pleasanton, CA

    Re: How to calculate energy costs for pump

    You can use the spreadsheet I put together some time ago (see signature). You can put your existing pump into the reference column and compare it to any other pump.
    Hydraulics 101; Pump Ed 101; Pump/Pool Spreadsheets; Pump Run Time Study; DIY Acid Dosing; DIY Cover Roller
    18'x36' 20k plaster, MaxFlo SP2303VSP, Aqualogic PS8 SWCG, 420 sq-ft Cartridge, Solar, 6 jet spa, 1 HP jet pump, 400k BTU NG Heater

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