Commercial EV charging: DC rapid chargers for business

Who this is for, and who it isn't

This page covers chargers your business buys and controls: depots, forecourts, short-stay car parks and sites opening rapid charging to the public. Cars parked for the working day need slower, cheaper AC charging, covered on our workplace EV charging page. Hotels, attractions and shops whose visitors stay for hours should read destination EV charging; home chargers sit under EV charger installation.

We'll be straight with you: a rapid charger is the wrong purchase for cars that sit for eight hours. It can cost more than ten times as much as an AC socket and usually needs network approval. It earns its place where vans turn round mid-shift or drivers won't wait longer than a coffee.

AC or DC: match the charger to the stop

The difference is where the conversion happens. An AC charger feeds the car's onboard charger, which converts the power to DC for the battery; a DC charger converts it itself and feeds the battery directly, bypassing the onboard charger's limit. Rapid DC charging in the UK uses the CCS connector; AC charging uses Type 2.

The car still sets the ceiling: Energy Saving Trust notes that where a chargepoint offers more power than the vehicle can take, the vehicle's charge rate is the limit.

The grid connection comes first

An EV charger is a load, not a generator, so the G98 and G99 forms used for solar panels and batteries don't apply to it. Government guidance sends chargers through the Energy Networks Association's EV and heat pump process: depending on the site, the installer either connects and then notifies the network operator within 28 days, or applies and waits for approval before installing. G98 or G99 only come in if you add solar, a battery or a bi-directional (vehicle-to-grid) charger.

The operator is SP Energy Networks across central and southern Scotland and SSEN in the north. SSEN allows connect-and-notify where the property's total demand stays at 60 A or less with no safety concerns. SP Energy Networks asks for a load survey before any chargepoint and works in the bands below.

One 50 kW DC charger draws more than 70 A per phase at full output on a 400 V three-phase supply, so rapid charging always means applying first, and often a larger or new connection. Government guidance says network operators quote within 5 to 65 working days depending on size, and you have 90 days to accept; very large connections can take many months or years. Our network operator page explains each Scottish operator's process.

What a new connection costs since April 2023

Since Ofgem's reforms of 1 April 2023, a site connecting to use electricity, such as a charging depot, no longer pays towards wider network reinforcement, with limited exceptions. You still pay for the "extension assets" that serve only your site, and Energy Saving Trust explains that reinforcement above a high-cost cap of £1,720 per kVA is still charged: a 1,000 kVA connection pays nothing for reinforcement costing under £1.72 million.

Two options can cut cost or delay. A flexible or time-profiled connection lets you draw less at agreed times; Ofgem's own worked example is a fleet charging station accepting some curtailment for a faster connection. Independent connection providers can also do the "contestable" work, such as trenching and cable laying.

For scale, the indicative figure SP Energy Networks gave Energy Saving Trust (as of June 2024) for a 120 to 350 kW rapid connection in its English and Welsh area was £15,000 to £120,000. That guide has no figure for Scotland, so your connection offer is the real number.

Charger costs, grants and tax

Reonic's August 2026 price guide for UK installers puts a 50 kW DC rapid at £18,000 to £28,000 per charger and a 7 kW AC socket at £900 to £1,800 fitted. These are third-party figures, not an Ecoaim quote; the connection charge is separate, and business installations carry 20% VAT.

Chargepoint equipment qualifies for a 100% first-year capital allowance until 31 March 2027 for companies (5 April 2027 for income tax), but only on the share you pay yourself; any part met by a public grant is excluded. Speak to your accountant; our business funding page covers the wider rules.

Grants for rapid charging are narrow. The Workplace Charging Scheme can fund approved DC chargers in staff or fleet parking, but its £500-per-socket cap covers a small share of a rapid unit, and it closes on 31 March 2027. In rural and island Scotland, Energy Saving Trust's Rural and Island Infrastructure Fund pays towards public chargers: for a 50 to 124 kW DC unit, 75% up to £33,750 or 100% up to £45,000 depending on location, and up to £300,000 for projects pairing chargers with battery storage. Both correct as of 15 October 2026.

Public rapid chargers: the 2023 regulations

If the public can use your chargers, the Public Charge Point Regulations 2023 apply anywhere in the UK. A car park open to customers counts, even if it's only open at set hours; one reserved for your staff or fleet doesn't. Duties fall on the charge point operator: the owner, or whoever runs the chargers for the owner.

Operators that aren't micro businesses (broadly, those with 10 or more staff) must provide: - contactless payment on new public chargers of 8 kW and above - payment through at least one roaming provider - a free, staffed helpline open 24 hours a day - open data on each public charger, including where it is and whether it's available - 99% reliability across their network of rapid (50 kW and above) chargers, with an annual report

Every operator, micro businesses included, must show the maximum price in pence per kWh before a session starts, with fixed fees included. The Office for Product Safety and Standards can impose penalties of up to £10,000 per breach.

Load management and battery support

Load management lets several chargers share a fixed connection, slowing some sessions so the total stays inside the capacity you've agreed. Government guidance lists smart chargers and on-site solar or battery storage among the ways to cut the demand you need from the network.

A battery can supply part of a charging peak where the connection is the bottleneck. It isn't free capacity: it must recharge between busy spells, and the battery itself comes under G98 or G99. See what a commercial battery and inverter can do on our Sigenergy commercial page and in our commercial battery storage guide, or start with commercial renewable energy if solar is on the table.

Siting and planning in Scotland

In an off-street car park, chargers are usually permitted development in Scotland within limits, including: upstands no higher than 2.7 metres, at least 2 metres from a road and one per space; wall units up to 0.5 cubic metres; and equipment housing up to 29 cubic metres and 3 metres high, 5 metres from a road and 10 metres from a home's curtilage. A rapid charger's separate power unit counts as equipment housing.

For context, Scotland had 59.1 public chargers of 50 kW and above per 100,000 people on 1 July 2026, against 41.7 across the UK (Department for Transport).

How we deliver a commercial charging project

We install commercial DC chargers from AE Auto. Before you order, we check the model is on the Energy Networks Association's low carbon technology register, since network operators may need longer to assess an unlisted model. A Workplace Charging Scheme installation also needs a model on OZEV's approved commercial list, and only an OZEV-authorised installer can claim that grant.

Book a free feasibility study and we'll tell you plainly whether your site has the capacity, or what it would take to get it.

What's included

• Free feasibility study: your vehicles, dwell times, meter data and spare supply capacity
• Network operator application to SP Energy Networks or SSEN, on the ENA form or as a new connection
• Charger mix designed around your connection, with load management and battery support where they help
• Commercial DC chargers from AE Auto, checked against the ENA register before you order
• Installation to BS 7671 and the IET Code of Practice for EV charging equipment
• Public charging compliance check: contactless, price display, helpline and open data
• Commissioning, back-office set-up and handover documents

Frequently asked questions