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Diesel Generator Fuel Consumption

Gallons per hour from BSFC or from the manufacturer's own full-load number, at any load fraction.

Inputs

Inputs and assumptions

Diesel generators run 0.35 to 0.45 lb per brake horsepower-hour.

Diesel is about 7.1 lb per gallon. Cold weather and winter blends change it slightly.

Enter the data sheet gallons per hour at 100% load to override the generic curve. Leave 0 to use the curve.

Price per gallon, delivered, including any service fee.

Result

Fuel cost per hour
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Fuel cost per kWh
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Fuel at this load
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Electrical energy per gallon
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Fuel in liters
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What to check

  • Manufacturer fuel curve at this load and ambient
  • Actual delivered fuel price and tank capacity

Related calculators

Fuel figures are estimator-grade. A manufacturer fuel curve at your load and ambient beats any generic curve; verify the nameplate rating, the actual load fraction, and the delivered fuel price before you size a tank or promise a runtime.

Saved calculations

Keep the assumptions with the result.

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