Pay-as-you-go charging is an EV charging payment model in which drivers pay only for each charging session, without a subscription or long-term contract. Pricing is typically based on energy delivered (kWh), time connected, a session fee, or a combination of these—depending on local regulations and the operator’s tariff design.
Why Pay-as-You-Go Charging Matters
Pay-as-you-go is the most accessible pricing option for occasional users and visitors because it avoids membership commitments. For charge point operators and site owners, it can:
– Expand usage by lowering the barrier to entry
– Support public-access charging requirements in many locations
– Simplify onboarding for tourists, guests, and infrequent drivers
– Improve revenue capture in destination and opportunistic charging sites
– Reduce customer support load compared to complex subscription plans (site-dependent)
How Pay-as-You-Go Charging Works
A typical pay-as-you-go flow includes:
– Driver authenticates via contactless payment, mobile app, QR code, or RFID (operator-dependent)
– The session starts and the charger records metered energy and session time
– The CPMS applies a tariff (e.g., €/kWh + parking/idle fees)
– Payment is captured per session and a receipt may be issued
– Optional rules apply, such as idle fees after charging ends
Common Pay-as-You-Go Tariff Structures
Operators often use one of these structures to balance fairness and bay turnover:
– Per kWh pricing: pay for energy delivered (best reflects consumption)
– Per minute/hour pricing: useful where parking time management is critical
– Session fee + per kWh: covers fixed transaction and operational costs
– Tiered time blocks: price changes after a set duration (encourages turnover)
– Idle fees: applied after charge completion to prevent bay blocking
Where Pay-as-You-Go Charging Is Most Common
– Public destination charging (retail, leisure, municipal parking)
– Highway hubs and mixed networks that serve non-members
– Hotels and visitor parking where guests may be occasional EV drivers
– Urban curbside charging where quick access is essential
– Backup charging for fleets when depot charging is unavailable
Key Benefits
– No subscription required; simple for occasional users
– Transparent session-based billing and easier cost control
– Supports interoperability when combined with roaming and ad-hoc payment
– Encourages broader EV adoption by reducing friction
Limitations and Considerations
– Higher per-session fees may apply due to payment processing costs
– Pricing can be inconsistent across networks, creating user confusion
– Time-based tariffs can be unfair when charging power varies by vehicle
– Without good overstay rules, bays may still be blocked after charging
– Some sites require reliable fiscal metering or MID metering depending on market rules
Related Glossary Terms
Ad-hoc Charging
Contactless Charging Payments
kWh-Based Billing
Charging Session Revenue
Idle Fee Policy
Idle Fees
MID Metering
Roaming
eMSP
CPMS