Loss-adjusted charging price limit calculator

For energy-only arbitrage, set avoided purchase cost equal to charging cost after round-trip losses; exclude demand charges, capital cost and other operating cost.

p_{\text{off,max}} = \frac{p_{\text{peak}} \times \mathrm{RTE}}{100}

Calculator

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

Worked example

Given

$p_{\text{peak}}$ = 0.26 $/kWh
$\mathrm{RTE}$ = 78 %

p_{\text{off,max}} = \frac{0.26 \times 78}{100} = 0.2028

Symbols and units

Symbol	Meaning	Unit
$p_{\text{off,max}}$	maximum off-peak energy price	$/kWh
$p_{\text{peak}}$	avoided peak energy price	$/kWh
$\mathrm{RTE}$	AC round-trip efficiency	%

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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.