Cost per kWh Formula:
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Definition: This calculator estimates the cost per kilowatt-hour (kWh) of electricity generated by a propane generator.
Purpose: It helps homeowners, businesses, and contractors evaluate the operating costs of propane-powered generators.
The calculator uses the formula:
Where:
Explanation: The formula multiplies fuel consumption by fuel cost to get total fuel expense, then divides by energy output to determine cost per unit of electricity.
Details: Understanding generator operating costs helps in budgeting, comparing fuel options, and making informed decisions about backup power solutions.
Tips: Enter the fuel consumption rate (default 0.10 gal/kWh), current propane cost per gallon, and energy output (default 1 kWh). All values must be > 0.
Q1: What's a typical propane consumption rate for generators?
A: Most propane generators consume 0.08–0.15 gallons per kWh, depending on size and efficiency.
Q2: How do I find my generator's fuel consumption rate?
A: Check the manufacturer's specifications or divide fuel consumption (gallons/hour) by generator output (kW).
Q3: Why is energy output typically set to 1?
A: Setting EkWh to 1 calculates the cost per single kWh, which is the standard unit for comparison.
Q4: How does propane cost compare to other fuels?
A: Propane typically costs more per kWh than natural gas but less than gasoline in most markets.
Q5: Does this include maintenance or other costs?
A: No, this calculates only fuel costs. Consider adding 10-20% for maintenance and other operational expenses.