EV & Battery Manufacturing worked example

EV Charging Bay Capacity at 99% charging bay uptime: a worked example

Push charging bay uptime up to 99% and the picture changes. This example computes every intermediate figure at that operating point. an EV plant or battery facility needs to verify charging capacity for EOL, shipping, service, or pack conditioning

The inputs for this scenario

  • Vehicles or packs charged per bay cycle: 12 vehicles/packs per cycle (unchanged)
  • Available charging cycles in the period: 18 cycles (unchanged)
  • Charging bay uptime: 99 % (raised for this scenario; the documented default is 90)
  • First-pass charge completion yield: 96 % (unchanged)

Working through the calculation

  • Applying the documented formula (Gross charging capacity = units charged per cycle × available charging cycles) to the inputs above produces each figure below.
  • At this operating point the engine returns 205 units for good charging bay capacity, the number this scenario is built around.
  • At this operating point the engine returns 216 units for gross charging capacity.
  • At this operating point the engine returns 2.16 units for units lost to charger downtime.
  • At this operating point the engine returns 8.55 units for units lost to charge faults.

How this compares with the baseline

  • Against the tool's baseline example, where charging bay uptime sits at 90% and the headline result is 187 units, this scenario comes in 10% above the baseline at 205 units.
  • It computes good (deliverable) charging capacity by multiplying units per cycle and available cycles, then derating by bay uptime and first-pass charge yield. The value of this scenario is the size of the gap it exposes: that gap, priced out over a year, is the budget you can justify spending to close it.

Results at a glance

  • Good charging bay capacity: 205 units (headline result)
  • Gross charging capacity: 216 units
  • Units lost to charger downtime: 2.16 units
  • Units lost to charge faults: 8.55 units

Run it with your numbers

  • Every input above is editable in the live EV Charging Bay Capacity calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.