Description
newInputKwh = shiftedKwh/efficiency; savings = shiftedKwh*oldPrice-newInputKwh*newPrice.
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.
newInputKwh = shiftedKwh/efficiency; savings = shiftedKwh*oldPrice-newInputKwh*newPrice.
When to use this tool
Use Time Of Use Weekend Shift Price Gap when checking one supplied energy-price normalization or cost contribution.
How to use the tool and how it works
- Enter shiftedKwh, oldPrice, newPrice, efficiency. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read newInputKwh, savings. Use the output convention below.
Require nonnegative shiftedKwh and efficiency in (0,1]. newInputKwh = shiftedKwh/efficiency; savings = shiftedKwh*oldPrice-newInputKwh*newPrice. Prices are currency/kWh on comparable tariff bases.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| shiftedKwh | Shifted Kwh | Required. Finite number; minimum 0. |
| oldPrice | Old Price | Required. Finite number. |
| newPrice | New Price | Required. Finite number. |
| efficiency | Dimensionless efficiency under the stated input/output quantity convention. | Required. Finite number; maximum 1; strictly above 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| newInputKwh | New Input Kwh | Required. Finite number. |
| savings | Savings | Required. Finite number. |
{
"input": {
"shiftedKwh": 100,
"oldPrice": 0.3,
"newPrice": 0.1,
"efficiency": 1
},
"output": {
"newInputKwh": 100,
"savings": 20
}
}Limitations and assumptions
- Efficiency losses can erase a nominal price advantage. The tool does not establish weekend eligibility, actual tariffs, fixed charges or feasible load shifting.
- 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
Similar or alternative tools
- Renewable Capture Price Weight One Hour
Return one interval’s generation weight, capture-price contribution and revenue.
- Fuel Heat Price Reference Gap
deliveredPricePerHeat = pricePerFuelUnit/(heatPerFuelUnit*deliveredEfficiency); referenceGap subtracts suppliedReferencePricePerHeat.