Quick Answer
When calculating fuel costs for diesel generators, consider the generator's power output, fuel efficiency, fuel type, usage hours, and maintenance expenses. You should also factor in the cost of fuel per gallon or liter, and the cost of generator maintenance, repair, and replacement parts. Accurate estimation of these factors will help you determine the total cost of operation.
Fuel Costs Calculation
To estimate fuel costs, you need to know the generator’s power output in kilowatts (kW), its fuel efficiency in gallons or liters per hour, and the cost of fuel per gallon or liter. For example, a 10 kW diesel generator with an efficiency of 0.3 gallons per hour and a fuel cost of $3.50 per gallon will cost approximately $1.05 per hour to operate. Multiply this by the number of hours of usage to determine the total fuel cost.
Generator Maintenance and Repair Expenses
In addition to fuel costs, you should also factor in the cost of generator maintenance, repair, and replacement parts. A typical diesel generator requires an annual maintenance cost of $200 to $500, depending on usage and the generator’s age and condition. You should also budget for repairs, which can range from $500 to $5,000 per year, depending on the frequency and severity of breakdowns. Divide these costs by the number of hours of usage to determine the cost per kilowatt.
Cost per Kilowatt Calculation
To determine the cost per kilowatt, divide the total fuel cost and maintenance expense by the generator’s power output in kilowatts. For example, if the total fuel cost is $1.05 per hour and the maintenance cost is $300 per year, and the generator produces 10 kW, the cost per kilowatt would be approximately $13.50 per year.
Find more answers
Browse the full Q&A library by topic, or jump back to the topic this question belongs to.