ClueLuma

Net annual savings calculator

Subtract added maintenance from energy savings to obtain the recurring cash benefit.

A=ΔCenergy−ΔCOMA = {\Delta C_{\text{energy}}} - {\Delta C_{\text{OM}}}

Calculator

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

$/year
$/year
$/year

Worked example

Given

  • ΔCenergy{\Delta C_{\text{energy}}} = 12,000 $/year
  • ΔCOM{\Delta C_{\text{OM}}} = 1,500 $/year
A=12,000−1500=10,500A = 12{,}000 - 1500 = 10{,}500

Symbols and units

SymbolMeaningUnit
AAnet annual savings$/year
ΔCenergy{\Delta C_{\text{energy}}}annual energy cost saving$/year
ΔCOM{\Delta C_{\text{OM}}}added annual O&M cost$/year

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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.