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Farm Machinery Energy Cost Estimator

The Farm Machinery Energy Cost Estimator calculates the operating energy expense of a machine from its hourly energy use, operating hours, and price per energy unit. It can be used for diesel, gasoline, electricity, or another energy source as long as the consumption rate and price use matching units.

The result provides total energy cost for the planned operating period, plus total energy consumed and cost per operating hour. This makes it easier to compare jobs, estimate a seasonal machinery budget, or test the effect of changing fuel or electricity prices without mixing energy costs with labor, depreciation, repairs, or ownership expenses.

Energy use assumptions

units/hr
hr
$/unit
%
Result
—
Estimated energy cost
Total energy consumed—
Productive-operation cost—
Average energy cost per hour—

1. Use matching energy units
If consumption is in gallons per hour, enter a price per gallon; if it is in kWh per hour, enter a price per kWh.

2. Enter the machine's use rate
Use a measured or representative hourly consumption rate for the planned work.

3. Set operating hours
Include all hours during which the machine consumes energy for this job or period.

4. Add the energy price
Enter the current or scenario price per matching unit.

5. Optionally note idle share
Use the idle percentage to separate the portion of cost associated with productive operating time from nonproductive time.

Total energy use = Energy use rate × Operating hours Total energy cost = Total energy use × Price per energy unit Productive-operation cost = Total energy cost × (1 − Idle share ÷ 100)

The main result includes all entered operating hours, including the idle share. The idle adjustment is shown only as a planning breakdown and does not reduce the total amount paid for energy.

What the result means

The main result is the energy expense attributable to the entered operating period before labor, maintenance, depreciation, financing, or other machinery costs.

For scenario analysis, keep the consumption rate and hours constant and change only the energy price; for operating-efficiency analysis, compare different use rates or idle shares.

Given:

  • Energy use rate = 6.5 units/hr
  • Operating time = 120 hr
  • Energy price = $3.85/unit
  • Idle share = 8%

Calculation:
Total use = 6.5 × 120 = 780 units. Total cost = 780 × $3.85 = $3,003.00. Productive-operation share = $3,003 × 0.92 = $2,762.76.

Result:
Estimated energy cost = $3,003.00.

Interpretation:
The machine uses 780 energy units over the period, averaging $25.03 of energy cost per operating hour.

Can I use this for electricity?

Yes. Enter consumption in kWh per hour and the price in dollars per kWh. The units only need to match.

Does the idle percentage reduce total energy cost?

No. Total cost is based on all entered operating hours. The idle percentage only separates the productive-share estimate for analysis.

Should I include maintenance or depreciation?

No. Those are separate machinery costs and are not part of this energy-only estimate.

Can the energy use rate be zero?

Yes. A zero rate produces zero energy use and cost, which can be useful for comparison or when a machine is not operating.

Why use cost per hour?

It gives a normalized figure for comparing jobs of different duration or machines with different consumption rates, although it does not represent full ownership and operating cost.