What chargepoint speed should a fleet use for overnight depot charging?

For overnight depot charging of vans and cars, 7kW AC chargepoints (Type 2 connector) are the most cost-effective option. A van with a 75kWh battery charged at 7kW will reach full charge in approximately 10–11 hours — suitable for overnight dwell times. For fleets with shorter overnight windows (less than 8 hours) or larger vehicle batteries, 22kW AC or DC rapid chargers may be necessary. A charging infrastructure specialist should model the specific dwell time and battery capacity mix for your fleet.

How does smart charging reduce electricity costs for fleets?

Smart charging systems allow the fleet operator to schedule charging during off-peak tariff periods — typically between 23:00 and 07:00 — when grid electricity is cheapest. Some smart charging platforms also support demand management, preventing multiple vehicles from drawing peak current simultaneously, which avoids expensive demand charges on business electricity tariffs. For fleets on Time-of-Use (TOU) tariffs, smart charging can cut charging costs by 30–50% compared to unmanaged overnight charging.

How should fleet managers handle drivers charging at home?

Where fleet drivers charge company vehicles at home overnight, the employer is responsible for installing an appropriate chargepoint (typically a 7kW wallbox) and reimbursing the driver for the electricity used. HMRC sets an Advisory Electricity Rate (AER) — currently 9p per mile — that employers can use to reimburse drivers without triggering a benefit-in-kind charge. Alternatively, employers can use actual cost reimbursement with supporting evidence from a smart charger that separates business and personal charging.

How do I manage range anxiety for fleet drivers switching to EVs?

Range anxiety is most effectively managed by data, not reassurance. Before transitioning a vehicle, use GPS tracking data from the fleet management system to analyse actual daily mileage for each vehicle. Most UK fleet vans travel under 100 miles per day — well within the range of current electric LCVs. Providing drivers with real-time range data via the vehicle or driver app, pre-planned charging stops for longer journeys, and a clear process for public charging reimbursement removes the practical barriers that underlie range anxiety.

Operations11 min read

Electric Fleet Charging Management UK: A Practical Guide for Fleet Managers

Transitioning to an electric fleet is not just a vehicle procurement decision — it's an energy infrastructure project. The charging strategy you design before the first EV arrives will determine whether your transition delivers on its cost and carbon promises, or creates a new category of operational headache.

By 2035, the UK government will phase out the sale of new petrol and diesel vans. For most UK fleet operators, this means the electrification of at least part of the fleet is not a distant strategic question — it's an immediate operational one. Vehicles leased today on 3–4 year terms will be up for renewal right as the new-vehicle market tilts decisively toward electric.

The good news is that for most UK fleet operations — especially trades, field service, last-mile delivery, and urban logistics — the electricity case already stacks up on pure economics, not just carbon. A full charge for a typical electric van costs £3–£7 at a depot overnight tariff, compared to £18–£25 for an equivalent diesel fill. Over 30,000 miles a year, that's a saving of £3,000–£5,000 per vehicle in fuel alone — before accounting for lower servicing costs.

The challenge is not the vehicles. It's the charging infrastructure, the energy management, and the operational integration. This guide covers all three.

EV charging options for UK fleets

Not all charging is equal — speed, cost, infrastructure investment, and operational suitability vary significantly. Most fleets use a combination of charging types depending on their operations:

Option	Best for	Cost per kWh	Notes
Depot AC charging (7kW)	Overnight dwell, standard vans and cars	8–16p (off-peak tariff)	Most cost-effective for standard fleet use. Eligible for Workplace Charging Scheme grant.
Depot AC charging (22kW)	Shorter dwell times, larger batteries	12–22p	Three-phase power required. Higher chargepoint and installation cost.
Depot DC rapid (50–150kW)	Mid-shift top-ups, vehicle rotation	25–45p	Highest infrastructure cost. Useful for 24-hour operations or vehicles with minimal dwell time.
Public rapid/ultra-rapid	En-route charging on longer journeys	55–85p	Highest per-kWh cost. Use fleet charge cards (Allstar, Fuel Card Services) for VAT reclaim and cost control.
Home charging (7kW wallbox)	Drivers who home-park company vehicles	7–13p (residential off-peak)	Employer installs chargepoint and reimburses electricity at HMRC AER (9p/mile).

Government grants for fleet EV charging

The Workplace Charging Scheme (WCS) remains the primary grant available to UK businesses installing EV chargepoints. Key details:

Grant value

Up to £350 per socket, maximum 40 sockets per applicant

Eligible businesses

UK businesses, charities, and public sector bodies

Eligible chargepoints

OZEV-approved smart chargepoints only

Application process

Apply before installation via the OZEV portal

Combined savings

A 10-socket installation can attract up to £3,500 in grant funding

Additional schemes

Local authority EV infrastructure grants may be available depending on your region

Fleet managers planning a larger charging installation should also explore the Rapid Charging Fund (for motorway service areas) and local enterprise partnership (LEP) grants, which vary by region. For a broader view of the EV fleet transition picture, see our guide to electric vehicle fleet management in the UK and our fleet carbon reporting guide.

How to plan a fleet EV charging transition — step by step

Step 1

Audit actual daily mileage

Pull 90 days of GPS tracking data for each vehicle in the fleet. For each vehicle, calculate the 95th percentile daily mileage — the distance that 95% of all working days fall within. This is the range floor your replacement EV must exceed. Most UK fleet vans fall well under 120 miles, putting the full electric LCV range well inside the operational requirement.

Step 2

Identify vehicles for early transition

Prioritise vehicles that have predictable routes, return to base each night (enabling overnight charging), and carry loads within EV payload limits. Vehicles used for multi-drop delivery, short-range trades work, or urban service calls are typically the strongest EV candidates. Skip vehicles with unpredictable long-distance requirements until the charging network matures.

Step 3

Design the charging infrastructure

For each depot, calculate the number of vehicles returning overnight, the available dwell time, and the battery capacity of the chosen vehicles. From these inputs, a charging infrastructure specialist can specify the number and speed of chargepoints, the required electrical supply upgrade (if any), and the load management system needed to prevent demand charge spikes. Apply for the Workplace Charging Scheme grant before installation.

Step 4

Choose a smart charging platform

A smart charging platform allows you to schedule overnight charging during off-peak tariff windows, set per-vehicle or per-site energy budgets, and produce charging cost reports for fleet accounting. Most platforms integrate with Time-of-Use electricity tariffs and support RFID card or app-based driver authentication. This is the layer that turns raw chargepoints into a manageable fleet cost.

Step 5

Train drivers and monitor range data

Driver engagement is the most commonly underestimated step in fleet electrification. Before transition, explain how charging works, how to use the chargepoint, what to do on a longer journey, and how to report a charging problem. After transition, monitor daily state-of-charge and charging event data to identify drivers who are not plugging in consistently — early intervention prevents the range anxiety spiral.

Smart charging: the key to cost control

Unmanaged EV charging — where every vehicle plugs in as soon as it returns to depot — creates a peak demand event that can trigger expensive demand charges on business electricity tariffs. For a depot with 20 vans all returning between 17:30 and 18:30, simultaneous charging at 7kW each represents a 140kW demand spike that most business premises are not contracted for.

Smart charging solves this by spreading the load across the overnight window, prioritising vehicles that need to leave earliest, and scheduling bulk charging during the cheapest tariff period. For fleets on Time-of-Use tariffs — such as EDF's EV tariff or Octopus Go — this means charging at 7p/kWh overnight versus 28–35p/kWh during peak hours. The annual difference across a 15-van depot is approximately £4,000–£8,000.

Integration between the smart charging platform and the fleet management system allows fleet managers to see vehicle state of charge alongside live tracking data — so the morning debrief includes both where vehicles are and whether they're charged for the day ahead. For operational context on how tracking data supports fleet-wide planning, see our live tracking feature page and our guide on reducing fleet costs.

Tracking and reporting EV charging costs

Replacing fuel cards with EV charge cards introduces new cost tracking requirements. Fleet managers need to be able to attribute charging costs to individual vehicles and drivers, reconcile depot charging (billed via electricity invoice) with public charging (billed via charge card), and claim VAT back on business charging.

Depot charging costs

Tracked via smart charging platform — per-vehicle session data exported monthly

Public charging costs

Managed via fleet charge card (Allstar EV, Fuel Card Services) — VAT invoiced

Home charging reimbursement

HMRC AER (9p/mile) or smart charger actual cost — driver submits mileage claim

Carbon reporting

kWh consumed feeds into Scope 1 (owned vehicles) and Scope 3 emissions reporting

Frequently asked questions

The Workplace Charging Scheme (WCS) provides a grant of up to £350 per socket (maximum 40 sockets per applicant) toward the cost of purchasing and installing EV charge points at business premises. The scheme is administered by OZEV (Office for Zero Emission Vehicles). Separate grants are available for chargepoints in residential properties (for fleet managers charging company vehicles at home) under the Electric Vehicle Chargepoint Grant. Both schemes require OZEV-approved chargepoints and installers.

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