ClueLuma

Compressor annual energy and demand cost calculator

The example adds energy and demand charges; use actual motor input and billed demand.

Ctotal=P×h×ce+Ppeak×cdC_{\text{total}} = P \times h \times c_{e} + P_{\text{peak}} \times c_{d}

Calculator

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

kW
h/yr
$/kWh
kW
$/kW·yr
$/yr

Worked example

Given

  • PP = 56 kW
  • hh = 4,200 h/yr
  • cec_{e} = 0.13 $/kWh
  • PpeakP_{\text{peak}} = 61 kW
  • cdc_{d} = 135 $/kW·yr
Ctotal=56×4200×0.13+61×135=38,811C_{\text{total}} = 56 \times 4200 \times 0.13 + 61 \times 135 = 38{,}811

Symbols and units

SymbolMeaningUnit
CtotalC_{\text{total}}annual electricity cost$/yr
PPoperating electric inputkW
hhannual operating hoursh/yr
cec_{e}energy price$/kWh
PpeakP_{\text{peak}}billed demand contributionkW
cdc_{d}annual demand price$/kW·yr

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