EV Charging Guide
What Is a "Session Fee" in UK Electric Car Charging?
Updated April 2026
You just charged your electric car and the receipt shows a fee you did not expect. Session fees, connection fees, and idle fees are separate charges on top of the per-kWh energy price. Not all UK networks charge them, and the terminology is inconsistent. This guide explains what each fee means, which networks charge them, and how they affect the actual cost of your charge.
Fee information is approximate and based on publicly available data as of early 2026. Networks change their pricing regularly. Always check the network's app or the charger screen for current fees before starting a session. EVcourse is not affiliated with any charging network.
Quick Fix
- Session fee on your receipt? A flat charge per session, typically approximately £1. Covers payment processing and site costs.
- Idle fee? You stayed plugged in after charging finished. This is per-minute, approximately £0.50 to £1.00 per minute. Unplug promptly to avoid it.
- Unexpected total? The session fee hurts most on short top-ups. A £1 fee on a 5 kWh charge adds 20p/kWh to your effective rate.
Session Fee vs. Connection Fee vs. Idle Fee
Session fee / Connection fee
A flat charge applied once at the start of every session. This is on top of the per-kWh energy cost. Covers payment processing, site maintenance, and operational costs. Terms are used interchangeably by different networks.
Idle fee
A per-minute charge that kicks in after your car finishes charging but remains plugged in. Approximately £0.50 to £1.00 per minute. Designed to encourage you to move your car and free up the charger for others. Some networks send a notification when charging is complete.
Minimum charge
Some networks require a minimum spend per session. If your charge costs less than the minimum, you pay the minimum amount instead.
Which UK Networks Charge Session Fees?
- → GeniePoint: Approximately £1.00 connection fee for most sessions.
- → BP Pulse: Varies. Some older legacy units charge a flat connection fee for non-members. Newer units typically do not.
- → Pod Point: Usually no session fee for DC fast chargers. Some AC units have a flat "starting" price.
As of early 2026, many major UK networks including InstaVolt, GridServe, and Osprey do not charge a separate session fee, though pricing structures change regularly. Always check the charger screen or the network's app before you plug in.
How Session Fees Affect Short Charging Sessions
Session fees hit short sessions hardest. The flat fee is the same whether you charge 5 kWh or 50 kWh, so a quick top-up ends up being significantly more expensive per kWh.
Here is how a session fee changes the effective cost (using approximate example figures):
Quick top-up: 5 kWh
Energy: 5 kWh x ~80p = ~£4. Session fee: ~£1. Total: ~£5. Effective rate: ~£1.00/kWh (~25% increase).
Medium charge: 20 kWh
Energy: 20 kWh x ~80p = ~£16. Session fee: ~£1. Total: ~£17. Effective rate: ~£0.85/kWh (~6% increase).
Full charge: 50 kWh
Energy: 50 kWh x ~80p = ~£40. Session fee: ~£1. Total: ~£41. Effective rate: ~£0.82/kWh (~2.5% increase).
If a network charges a session fee, it is worth charging more per session to dilute the flat cost. Two sessions of 10 kWh cost you £2 in session fees. One session of 20 kWh costs £1.
How to Check for Fees Before You Plug In
- → Check the charger screen. Most networks display the full pricing breakdown (per-kWh rate, session fee, idle fee) on the charger before you authenticate.
- → Check the network's app. Select the station in the app to see pricing details, including any fees.
- → Look for fee notices on the charger. Some chargers have a sticker or printed notice with the full pricing structure.
If the charger screen is unclear about fees, scan it with the EVcourse app. The app reads the display and explains what you are being charged.
From Finn, engineer: Session fees are one of those things that catch new EV drivers off guard, especially in the UK where some networks are less transparent about them than others. Our advice: always check the charger screen or the app for the full pricing breakdown before you plug in. If the screen is unclear, scan it with EVcourse.
EVcourse app provides instant troubleshooting and expert explanations at the charger. Scan any station or car screen for step-by-step help, free to start on iOS.
Frequently Asked Questions
What is a session fee in UK EV charging?
A session fee is a flat charge applied each time you start a charging session, on top of the per-kWh energy cost. It covers the network's fixed costs like payment processing and site maintenance. Not all UK networks charge session fees.
Which UK charging networks charge session fees?
GeniePoint charges approximately 1 pound per session. Some older BP Pulse units have a connection fee for non-members. Most major networks like InstaVolt and GridServe do not charge separate session fees as of early 2026, but pricing structures change regularly.
What is the difference between a session fee and an idle fee?
A session fee is charged once when you start charging. An idle fee is charged per minute after your car finishes charging but remains plugged in. Idle fees are typically 50p to 1 pound per minute and are designed to encourage drivers to move their car when charging is complete.
How do session fees affect short charging sessions?
Session fees hit short sessions hardest. For example, charging 5 kWh at 80p per kWh costs 4 pounds for energy. Add a 1 pound session fee and the effective rate becomes 1 pound per kWh, a 25% increase. For a full 50 kWh charge, the same fee only adds 2p per kWh.
Unexpected charge on the screen?
Scan it with the EVcourse app. It reads the display and explains what each charge means.
Don't understand the screen? Scan it.
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