Fuel Cost Comparison Calculator
Compares natural gas vs diesel operating costs for compressors, generators, and prime movers. Calculates fuel consumption, CO₂ emissions, and payback period for fuel switching. Uses EIA heating values (138,500 Btu/gal diesel, 1,020 Btu/scf gas) and EPA emission factors.
Engine Specifications
HP
%
hrs/yr
Fuel Prices
$/gal
$/Mcf
Btu/scf
Thermal Efficiency
%
%
Typical: Diesel 35-42%, Rich-burn gas 28-35%, Lean-burn gas 32-38%
Maintenance & Investment
$/hp-hr
$/hp-hr
$
%
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Gas vs diesel cost analysis: energy equivalency, efficiency comparisons, and economic breakeven