240 volt Hour meter installed on pressure valve for 1 HP 2-person
residential water well with light usage.
After 12 days, the hour meter reading showed 3.5 hours
1 hp 735 Watts (start up amperage not included)
735 watts X 3.5 hours = 2572 wh = 2.572 Kwh per 12 days
Extrapolate for 1 year = 78 kwh per year @ 12 cents = $9.39 to operate
pump for 1 year
++++++++++++++++++
Pumping Energy/Cost
The annual energy cost to pump water can be calculated from the
following equation:
C = (DR/GPM) x HP x 4.5 x
0.08*
(2)
Where:
C = annual energy cost, dollars
DR = daily water requirement, gal
GPM = flow rate, gpm
HP = pump size, hp
4.5 = unit conversions
* 0.08 = assumed cost of electricity, $/kWh. This is a reasonable
average cost of electricity. Use your actual electric rate if you know
it.
Found interesting well water cost calculator:
http://www.pumpefficiency.org/Pumptesting/costanalysis.asp
water pump
water well
well pump
cost to pump water
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