ClueLuma

Facility monthly electric load factor (FMELF) calculator

Compare actual energy with continuous operation at the billing-period peak.

FMELF=EmonthDpeak×hmonth\mathrm{FMELF} = \frac{E_{\text{month}}}{D_{\text{peak}} \times h_{\text{month}}}

Calculator

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

kWh
h
kW
decimal

Worked example

Given

  • EmonthE_{\text{month}} = 216,000 kWh
  • hmonthh_{\text{month}} = 720 h
  • DpeakD_{\text{peak}} = 500 kW
FMELF=216,000500×720=0.6\mathrm{FMELF} = \frac{216{,}000}{500 \times 720} = 0.6

Symbols and units

SymbolMeaningUnit
FMELF\mathrm{FMELF}monthly load factordecimal
EmonthE_{\text{month}}metered energy during billing periodkWh
hmonthh_{\text{month}}hours during the actual billing periodh
DpeakD_{\text{peak}}peak demand during that periodkW

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.