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EV Battery Cost per kWh

Free EV Battery Cost per kWh calculator with clear step-by-step results.

About EV Battery Cost per kWh

Pack price divided by nameplate capacity is the headline figure, but it flatters the pack twice - by counting buffer capacity you can never use, and by ignoring how many kilowatt-hours it will actually deliver before retirement. Averaging capacity between new and end-of-life gives lifetime throughput and a levelised capital cost.

Formulas

Cost per usable kWh

Cost = pack price / (nameplate capacity x usable share)

Lifetime throughput

kWh = usable capacity x (1 + end-of-life retention) / 2 x rated cycles

Worked example

With the default values below, EV Battery Cost per kWh returns Cost per usable kWh of capacity of $181.16. Change any input above and every figure here is recalculated in your browser.

Inputs used

Battery pack priceminimum 0 $
12,500 $
Nameplate capacityminimum 0.1 kWh
75 kWh
Usable share of capacityaccepts 50–100 %
92 %
Rated cycle lifeminimum 1 cycles
1,500 cycles
Capacity retained at end of lifeaccepts 40–100 %
70 %

Results

Cost per usable kWh of capacity
$181.16
Cost per nameplate kWh
$166.67
Energy the pack will deliver over its life
87,975 kWh
Capital cost per kWh cycled
$0.1421

Step by step

  1. 1Values used
  2. 2Cost per usable kWh
  3. 3Lifetime throughput
  4. 4Cost per usable kWh of capacity= $181.16/kWh
  5. 5Cost per nameplate kWh= $166.67/kWh
  6. 6Energy the pack will deliver over its life= 87,975 kWh
  7. 7Capital cost per kWh cycled= $0.1421/kWh

Assumptions and limits

  • The result is derived only from the 5 inputs listed above. Anything not among them is not part of the calculation.
  • In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
  • Figures are rounded for display to 4 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Frequently Asked Questions

Why is usable capacity below nameplate?

Manufacturers reserve a buffer at both ends of the state-of-charge range to protect cycle life and to hide early degradation from the driver. Buffers of 5-10% are normal.

What does cost per kWh cycled tell me?

It is the capital component of the cost of storing energy, which is the right basis for comparing packs with different chemistries and cycle lives. Add electricity and efficiency losses for a full storage cost.

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