The calculation
Fuel input cost/GJ = landed price per tonne ÷ NCV in MJ/kg.
Useful heat cost/GJ = price ÷ (NCV × efficiency as a decimal).
Fuel kg/h = useful heat kW × 3.6 ÷ (NCV × efficiency).
Monthly tonnes = kg/h × hours/day × days/month ÷ 1,000.
Fuel cost calculator
Compare the cost of useful heat.
Use the same currency and delivered-cost boundary for each fuel. The prefilled values below are demonstration data, not product specifications.
Your estimate
Transparent inputs.
Comparable results.
Choose your inputs and select Calculate.
Results rounded to two decimal places. Estimates are not an equipment selection, performance guarantee or emissions assessment.