There is no published break-even utilisation to aim at — the target is the result of your own division. Divide the site’s fixed monthly costs by the contribution each kWh leaves after energy and variable costs, and the result is the energy the site must sell. Against the chargers’ rated output over the month, that is your break-even utilisation.
Key Takeaways
- Break-even utilisation is a division, not a benchmark: fixed monthly costs ÷ contribution per kWh, against rated output.
- Use the energy measure — occupancy counts plugged-in hours, revenue counts kilowatt-hours.
- NEVI’s above-97% figure is an uptime duty under 23 CFR Part 680, never a utilisation target.
- Below the line, work the levers in order: contribution, fixed stack, energy per connection — ports only on queue evidence.
The Break-Even Worksheet
| Worksheet line | Where it comes from | Notes |
|---|---|---|
| Fixed monthly costs | Your contracts and bills: platform, connectivity, site lines, contracted visits, the demand-charge floor | The stack that arrives whether or not anyone plugs in |
| Contribution per kWh | Your price minus the energy cost per kWh and any per-kWh platform or payment share | From your own tariff and contracts; if you price per session, run the same worksheet per session |
| Break-even kWh per month | Fixed costs ÷ contribution per kWh | The energy the site must sell to cover its fixed stack |
| Break-even utilisation | Break-even kWh ÷ (rated kW × hours in the month), summed across ports | The energy measure — the one revenue follows |
Use the energy measure, not the clock: a port can sit plugged in all day by one car that finished mid-morning — full occupancy, very little energy sold. The wider profit picture is in our piece on whether an EV charging station business is profitable.
An illustration with invented round numbers — a teaching example, not a benchmark: fixed costs of $300 a month and a contribution of $0.20 per kWh give 1,500 kWh to break even. On one 7 kW port — inside the U.S. DOT’s typical 7–19 kW Level 2 band — a 30-day month offers at most 7 × 720 = 5,040 kWh, so that site breaks even at about 30% energy utilisation. Change any input and the target moves.
When the Target Won’t Come
- Raise the contribution. Price, or the structure carrying it, within your market’s rules — a thin contribution makes the required volume unreachable.
- Cut the fixed stack. Renegotiate the platform and site lines; check whether managing simultaneous draw lowers the demand-charge floor.
- Sell more energy per connection. Hardware serving two cars from one connection spreads the fixed lines; faster turnover sells more per occupied hour.
- Do not add ports. More hardware raises the fixed stack and lowers utilisation per port when demand has not arrived. Queues in the session records are the signal to expand, not hope.
Uptime Is Not Utilisation
Keep one number out of this worksheet. Corridor stations funded under the U.S. NEVI programme must hold average annual uptime above 97% under 23 CFR Part 680 — an availability duty, not a sales target. A charger can be available all month and sell nothing; another can sell heavily and still fail an uptime duty.
Hardware Choices That Move the Worksheet
Two stated facts change the arithmetic. The EV-AC03201T dual-connector AC station runs two Type 2 connectors sharing up to 43 kW (22 kW per connector), with OCPP 1.6J, RFID and IP54 — two selling connections carrying one station’s fixed lines. The EV-RHDC30K-L compact DC charger, at 22 kW DC with OCPP 1.6J and IP54, sells more energy per occupied hour where dwell is short. Both report sessions over OCPP to the operator’s platform — the records that make utilisation countable, as our OCPP explainer sets out. EVDANCE was founded in 2011, with a 3-year standard warranty. Site planning starts via our commercial EV charging team or contact us.
Frequently Asked Questions
What utilisation do charging sites typically need to break even?
There is no sourced typical figure, and this article will not invent one. Break-even is an output of a site’s own fixed costs, price, tariff and hardware: two sites with the same chargers can land far apart.
Should break-even be measured on time or energy utilisation?
Energy. Revenue follows kilowatt-hours sold; time utilisation counts hours plugged in, including cars sitting full after charging ends. Only the energy figure pays the fixed stack.
If my site is below break-even, should I cut the price to lift volume?
Not first. Cutting the price cuts the contribution per kWh, which raises the volume the worksheet demands — it only works if volume grows faster than the contribution shrinks. Check both sides of the division first: a fixed stack too heavy for the site, or a contribution too thin for the stack.
Related Reading
- Is an EV Charging Station Business Profitable?
- How Much Do EV Charging Stations Charge? Pricing Models Explained
- Where to Install an EV Charging Station: Site Selection Guide
- How Much Does It Cost to Install a Commercial EV Charging Station?
