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Fuel Heat Price Reference Gap Tool

Calculate fuel heat price reference gap from explicit caller-supplied inputs.

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Description

deliveredPricePerHeat = pricePerFuelUnit/(heatPerFuelUnit*deliveredEfficiency); referenceGap subtracts suppliedReferencePricePerHeat.

Energy price comparisons require consistent delivered or input energy units, efficiency, calorific basis and reporting period. Dividing by efficiency increases the input needed for a delivered unit; nominal price differences alone need not represent a saving.

deliveredPricePerHeat = pricePerFuelUnit/(heatPerFuelUnit*deliveredEfficiency); referenceGap subtracts suppliedReferencePricePerHeat.

When to use this tool

Use Fuel Heat Price Reference Gap when checking one supplied energy-price normalization or cost contribution.

How to use the tool and how it works

  1. Enter pricePerFuelUnit, heatPerFuelUnit, deliveredEfficiency, suppliedReferencePricePerHeat. Use the units and conventions below.
  2. Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
  3. Read deliveredPricePerHeat, referenceGap. Use the output convention below.

Require nonnegative pricePerFuelUnit and reference price, positive heatPerFuelUnit and deliveredEfficiency in (0,1]. deliveredPricePerHeat = pricePerFuelUnit/(heatPerFuelUnit*deliveredEfficiency); referenceGap subtracts suppliedReferencePricePerHeat.1

Input fieldMeaning and unitsAccepted input
pricePerFuelUnitPrice Per Fuel UnitRequired. Finite number; minimum 0.
heatPerFuelUnitHeat Per Fuel UnitRequired. Finite number; strictly above 0.
deliveredEfficiencyDelivered EfficiencyRequired. Finite number; minimum 0; maximum 1; strictly above 0.
suppliedReferencePricePerHeatSupplied Reference Price Per HeatRequired. Finite number; minimum 0.
Output fieldInterpretationReturned shape
deliveredPricePerHeatDelivered Price Per HeatRequired. Finite number.
referenceGapReference GapRequired. Finite number.
json
{
  "input": {
    "pricePerFuelUnit": 12,
    "heatPerFuelUnit": 4,
    "deliveredEfficiency": 0.5,
    "suppliedReferencePricePerHeat": 5
  },
  "output": {
    "deliveredPricePerHeat": 6,
    "referenceGap": 1
  }
}

Limitations and assumptions

  • Use matching delivered-heat units. Fuel properties and efficiency are assumptions; this term omits fixed costs and does not select the correct heating-value basis.
  • Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
  • Numeric calculations use binary floating point unless exact decimal-integer arithmetic is explicitly stated. No hidden measurement tolerance or decimal rounding is added; nonfinite or out-of-contract results are rejected. Numeric signed-zero results are exported as zero.

Alternative or Complementary methods

Use the full tariff, operating profile and cost boundary when assessing real bills, investments or load-shifting decisions.

References

  1. Calculation and input contract: energy-economics/fuel-heat-price-reference-gap — tool.io

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