Normalized model savings calculator

Evaluate both supported linear models at the same reference condition rather than mixing weather years.

S_{\text{norm}} = a_{b} + b_{b} \times X - \left(a_{r} + b_{r} \times X\right)

Calculator

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

Given

S_{\text{norm}} = 40{,}000 + 18 \times 5000 - \left(35{,}000 + 12 \times 5000\right) = 35{,}000

Symbol	Meaning	Unit
$S_{\text{norm}}$	normalized energy savings	kWh
$a_{b}$	baseline intercept	kWh
$b_{b}$	baseline slope	kWh/unit
$a_{r}$	reporting intercept	kWh
$b_{r}$	reporting slope	kWh/unit
$X$	common reference independent variable	unit

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