Pay-per-use charging is an EV charging commercial model in which drivers pay only when they charge—without a subscription or a fixed monthly fee. Pricing is applied per session based on kWh delivered, time connected, a session fee, or a combination, depending on the operator’s tariff design and local billing rules.
Pay-per-use charging is often used interchangeably with pay-as-you-go charging and ad-hoc charging, although “ad-hoc” sometimes specifically implies instant access without prior registration.
Why Pay-per-use Charging Matters
Pay-per-use charging is important because it lowers barriers for occasional users and visitors while giving operators a straightforward way to monetize public and destination charging. It helps:
– Provide broad public access without membership commitments
– Improve adoption by simplifying pricing for infrequent users
– Support mixed-use sites (retail, hospitality, municipal parking)
– Enable clear cost allocation per session for fleets and corporate users
– Pair naturally with overstay management through time-based or idle fees
How Pay-per-use Charging Works
A typical pay-per-use flow includes:
– User starts a session via contactless payment, QR code, mobile app, or RFID
– The charger meters energy/time and reports the session to the CPMS
– The tariff is applied (€/kWh, €/min, session fee, idle fee rules)
– Payment is captured and a receipt is issued (operator-dependent)
– Optional penalties apply for overstays or bay blocking
Common Pay-per-use Tariff Structures
– Per kWh billing: users pay for energy delivered (most intuitive and fair)
– Per minute/hour billing: helps manage bay turnover where parking is constrained
– Session fee + per kWh: covers transaction and fixed operating costs
– Tiered pricing: rate increases after a set time or energy threshold
– Idle fees: apply after charging ends to discourage blocking
Where Pay-per-use Charging Is Most Common
– Public destination charging at retail and leisure sites
– Urban curbside charging and municipal parking
– Hotel and visitor charging where users are not regular members
– Backup charging for fleets outside depot environments
– Mixed networks that rely on roaming and occasional users
Key Benefits
– No subscription required, simple access for occasional drivers
– Clear session-based costs and easier expense reporting
– Works well with contactless payment and ad-hoc access requirements
– Flexible tariff options for different site objectives (revenue vs turnover)
Limitations and Considerations
– Per-use pricing can be higher than membership plans for frequent users
– Time-based fees can feel unfair when charging speed varies by vehicle
– Payment processing costs can increase the effective minimum session price
– Requires transparent signage and tariff display to avoid customer disputes
– Some markets require compliant metering (e.g., MID metering) for kWh billing
Related Glossary Terms
Pay-as-you-go Charging
Ad-hoc Charging
Contactless Charging Payments
kWh-Based Billing
Charging Session Revenue
Idle Fee Policy
Idle Fees
Roaming
eMSP
CPMS
MID Metering