Irrigation Energy Cost Calculator

Calculate pumping energy cost from Total Dynamic Head, flow rate, pump and motor efficiency, and electricity or diesel prices.

Flow rate (GPM)

Static lift (ft)

Friction loss (ft)

Operating pressure (PSI)

Pump efficiency (%)

Motor efficiency (%)

Electric rate ($/kWh)

Diesel price ($/gal)

Operating hours/season

Fuel type (0=Electric, 1=Diesel)

Tab to move between fields

Total Dynamic Head (ft)

279

Cost per hour ($)

$6.34

Cost per acre-inch ($)

$3.59

Water horsepower (WHP)56.4

Brake horsepower (BHP)78.3

Power demand (kW)63.4

Overall plant efficiency (%)66.2

Cost per 1,000 gal ($)$0.13

Seasonal energy cost ($)$7,613

Seasonal energy (kWh)76,128

Seasonal diesel (gal)4,133

Capacity (acre-in/hr)1.77

How to Use This Calculator

Enter Flow rate (GPM), Static lift (ft), and Friction loss (ft).
Set Operating pressure (PSI), Pump efficiency (%), and Motor efficiency (%).
Adjust Electric rate ($/kWh), Diesel price ($/gal) as needed.
Review Total Dynamic Head (ft), Cost per hour ($) ($), and Cost per acre-inch ($) ($).
Use Water horsepower (WHP) and Brake horsepower (BHP) to inform your decision.

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