Lyoid Fussell's

Fuel Gas Flow Calculator

Natural Gas Turbine — Fuel Consumption & Cost Estimator

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Turbine Parameters

BTU / kWh
Auto-calculated weighted average from Multiple Units table
MW
Auto-calculated sum from Multiple Units table
BTU / scf
Default 1,020 BTU/scf (HHV). Use ~909 BTU/scf for LHV. Adjust for your specific gas composition.
Mix up to 6 turbine types — heat rate auto-weights by MW contribution
# Heat Rate (BTU/kWh) MW per Unit # of Units Subtotal MW
Weighted Avg Heat Rate Total Facility Load
Weighted Avg = Σ(HR × MW × Qty) ÷ Σ(MW × Qty)
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Fuel Consumption at Max Load — Hourly

Thermal Energy
BTU / hr
Dekatherms (Dth)
Dth / hr  (= MMBtu / hr)
Volume — scf
scf / hr
Volume — Mscf
Mscf / hr
Volume — MMscf
MMscf / hr
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Gas Flow Rate Schedule

Unit Per Hour Per Day (24 hrs) Per Month (avg 730.5 hrs) Per Year (8,760 hrs)
BTU British Thermal Units
Dth  /  MMBtu Dekatherms (1 Dth = 1,000,000 BTU)
scf Standard Cubic Feet
Mscf Thousand Standard Cubic Feet
MMscf Million Standard Cubic Feet
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Gas Cost Calculator

$
per
Cost Per Hour Per Day Per Month (avg) Per Year
Gas Fuel Cost Based on entered unit price & turbine parameters