Workplace and fleet EV charging in 2026 sits on three regulatory and commercial foundations. First, the Workplace Charging Scheme (WCS) continues to fund £350 per socket up to 40 sockets per applicant — eligible to businesses, charities and public-sector bodies registered in England, Wales, Scotland or Northern Ireland. Second, OCPP back-office is essentially mandatory beyond 4 sockets — fleet managers need session-level reporting, driver authorisation, billing integration with payroll/expenses, and remote diagnostics across the bank. Third, the Electric Vehicles (Smart Charge Points) Regulations 2021 require all new workplace chargers to support smart charging, demand-side response and DC residual current detection at 6mA.
Dynamic Load Management (DLM) becomes the central design problem at scale. A typical London office or fleet depot has a contracted maximum demand of 100–250 kVA — 8 chargers at 22kW each would peak at 176kW and trip the incomer well before all 8 cars finished charging. DLM distributes the available current dynamically: when only two cars are plugged in they each get 22kW; when all eight are plugged in they each get 22kW × eight chargers shared. Modern OCPP back-offices (ABB Terra Config, Alfen Eve management, EO Genius, Zaptec Pro, Driivz) handle the DLM math centrally and report the active load distribution in real time.
Three-phase supply is mandatory at meaningful fleet scale. 22kW per charger is three-phase only; single-phase 7.4kW banks bottleneck quickly on any fleet doing more than 50 miles per vehicle per day. Where the incoming supply isn\'t already three-phase we coordinate the DNO G99 application and the supply upgrade. For depots already on three-phase, the install is a board extension plus the OCPP back-office subscription and the WCS paperwork — typically 4–6 weeks from signed quote to commissioning.
Why Electrician London
OZEV-approved installer cert
OZEV-approved installer registration — required for both WCS £350/socket and EVHS landlord grants. We hold the cert and handle the paperwork.
OCPP back-office selection
Independent advice on the OCPP 1.6/2.0 back-office that fits — ABB Terra, Alfen Eve, EO Genius, Zaptec Pro, Driivz or Monta. No vendor lock-in.
DLM design + commissioning
Dynamic load management designed against your kVA contracted demand, with CT clamp at the incomer and OCPP-side current distribution across all chargers.
Three-phase G99 liaison
Full G99 DNO application — UKPN, SSEN or relevant DNO — for any install above 16A per phase. Single-line diagram, commissioning witness, supply upgrade where needed.
Commercial EV charging pricing
Indicative pricing for typical office, hotel, retail and fleet depot installs. All projects are surveyed in person — pricing reflects supply size, cable runs and back-office choice.
Single 7–22kW commercial charger
Standalone unit, three-phase where available, OCPP smart, OZEV WCS paperwork
From £1,195
8-charger DLM-managed bank
Eight 7–22kW units, DLM commissioning, CT clamp, OCPP back-office onboarding
From £8,000
22kW three-phase station bank (per unit)
Per-charger price within a multi-unit bank, three-phase G99 included
From £3,995
OCPP back-office subscription
Indicative — ABB, Alfen, EO Genius, Zaptec Pro and Monta pricing varies by feature set
From £15/charger/month
OZEV Workplace Charging Scheme paperwork
WCS application, voucher administration, post-install evidence pack
£150
What's included in a commercial EV install
- Site survey and contracted demand assessment
- OCPP back-office shortlist with feature-fit analysis
- DLM design against existing kVA capacity
- Three-phase upgrade scoping where needed
- Full G99 DNO application and single-line diagram
- Cable trays, ducting and weatherproof TP&N distribution
- Per-charger Type A RCBO and Type 2 SPD
- CT clamp at the incomer for live DLM
- OCPP commissioning and driver/RFID enrolment
- WCS £350/socket voucher claim and evidence pack
Frequently asked questions
What are the leading OCPP back-offices in 2026?
For fleet-scale installs the strongest mainstream choices are ABB Terra Config (hardware + back-office bundled, strong on heavy-duty fleet), Alfen Eve management (very strong DLM math, popular in UK office parks), EO Genius (UK-built, simple commissioning, strong DLM), Zaptec Pro (Norwegian, slim chargers, good multi-tenant residential), Driivz (white-label, popular with CPOs) and Monta (open OCPP, strong UX, expanding fleet feature set). We help you pick based on fleet size, billing model and growth path — no kickback to vendors.
Who is eligible for the Workplace Charging Scheme?
Businesses, charities and public-sector bodies registered in England, Wales, Scotland or Northern Ireland with off-street parking that is owned or leased. £350 per socket up to 40 sockets per applicant lifetime, claimed as a voucher applied at install by an OZEV-approved installer. Sole traders are eligible. Pure residential addresses are not — those route through the EVHS scheme (flats/landlords) instead.
How is DLM designed against contracted kVA?
We pull the most recent 12 months of half-hourly demand data from the supplier (or a 4-week CT-clamp survey if data isn't available), identify the 95th-percentile peak demand and the spare headroom against the contracted kVA. The DLM ceiling is set just below the contracted limit minus the existing site demand, with a safety margin for cold-snap heating spikes. The OCPP back-office distributes that ceiling across plugged-in chargers in real time.
Three-phase upgrade or HV/MV alternative?
Most London commercial sites stay LV three-phase. Going HV (11kV) only makes sense at very large fleet depots — 50+ rapid 50kW+ chargers — where the cost of an HV substation amortises across the load. For 8–30 socket workplace installs, an LV three-phase upgrade (or a higher contracted kVA on existing three-phase) is the right answer.
How does RFID and driver authorisation work?
OCPP back-offices issue RFID cards or app-based virtual tokens to authorised drivers. The charger reads the RFID on plug-in, looks up the driver in the back-office, applies the right tariff and starts the session. Session data lands in the back-office with driver ID, kWh delivered, start/stop times and total cost — exportable to payroll, expenses or fleet management software.
What billing and payment models are supported?
Three common models: (1) free-to-driver workplace (employer absorbs the cost as a benefit), (2) employee-pays via app or RFID-linked card with monthly statement, (3) public-charging hybrid where company drivers get a tariff and visitors pay a higher casual rate. The OCPP back-office handles all three; Open Charge Alliance roaming brings in cross-network billing where the bank is also open to public users.
What warranty and maintenance contracts do we offer?
Hardware warranty varies by manufacturer (typically 2–5 years parts). Our installation carries a 2-year workmanship warranty. We offer annual maintenance contracts at £125–£200/charger covering electrical inspection, RCBO test, firmware update, OCPP back-office health check and a same-business-day response SLA on any breakdown. SLAs scale with fleet criticality.
Related services
NICEIC engineers, same-day across London.
Director-led, no call-centre. Same-day digital certificate, no upfront payment.
Call 020 3633 5557