ClueLuma

Net annual on-bill benefit calculator

Compare utility-bill repayments and additional costs with actual annual energy-cost savings.

Bnet=Senergy−N×Amonth−CotherB_{\text{net}} = S_{\text{energy}} - N \times A_{\text{month}} - C_{\text{other}}

Calculator

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

$/yr
payment/yr
$/payment
$/yr
$/yr

Worked example

Given

  • SenergyS_{\text{energy}} = 18,000 $/yr
  • NN = 12 payment/yr
  • AmonthA_{\text{month}} = 950 $/payment
  • CotherC_{\text{other}} = 600 $/yr
Bnet=18,000−12×950−600=6,000B_{\text{net}} = 18{,}000 - 12 \times 950 - 600 = 6{,}000

Symbols and units

SymbolMeaningUnit
BnetB_{\text{net}}annual customer net benefit$/yr
SenergyS_{\text{energy}}annual energy-cost saving$/yr
NNinstallments per yearpayment/yr
AmonthA_{\text{month}}installment amount$/payment
CotherC_{\text{other}}additional annual cost$/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.