ClueLuma

TOU energy charge calculator

Multiply peak and off-peak energy separately by their applicable prices before summing the costs.

CTOU=Eon×ron+Eoff×roffC_{\text{TOU}} = E_{\text{on}} \times r_{\text{on}} + E_{\text{off}} \times r_{\text{off}}

Calculator

Enter the values you know and leave one box empty. Calculate finds the empty one, the result or any input.

kWh
kWh
$/kWh
$/kWh
$

Worked example

Given

  • EonE_{\text{on}} = 13,000 kWh
  • EoffE_{\text{off}} = 27,000 kWh
  • ronr_{\text{on}} = 0.18 $/kWh
  • roffr_{\text{off}} = 0.07 $/kWh
CTOU=13,000×0.18+27,000×0.07=4,230C_{\text{TOU}} = 13{,}000 \times 0.18 + 27{,}000 \times 0.07 = 4{,}230

Symbols and units

SymbolMeaningUnit
CTOUC_{\text{TOU}}time-of-use energy charge$
EonE_{\text{on}}on-peak energykWh
EoffE_{\text{off}}off-peak energykWh
ronr_{\text{on}}on-peak unit price$/kWh
roffr_{\text{off}}off-peak unit price$/kWh

Related calculators

Results are estimates for study and screening. Check the inputs, units and assumptions before you use them for design, billing or contract decisions.