EV & Solar Service
EV Charging
EV charge point design and installation for commercial and industrial premises — OZEV guidance compliance, DNO application, smart load management, grid reinforcement and full BS 7671 commissioning.
What a commercial EV charging project actually has to solve
01
An existing supply that can't carry the EV load
Adding 7kW charge points at scale imposes significant additional load on the site supply. We carry out a load flow assessment and supply capacity review before specifying any charge point — so the electrical scope is fully costed before the project begins, and supply upgrades are planned rather than reactive.
02
Peak demand charges triggered by simultaneous charging
Unmanaged charging across a large fleet or car park triggers demand peaks that increase both network capacity charges and energy costs. Smart load management systems distribute the available capacity across charging sessions — we design and commission these systems as part of the installation.
03
A DNO application process you don't know how to manage
Larger EV installations require G99 notification or full engineering recommendation approval from the distribution network operator. We manage the full application process — including load flow modelling, protection coordination and formal DNO submission — so this doesn't become a programme blocker.
04
Future-proofing for a fleet that will grow
Installing the minimum number of charge points today at the minimum supply capacity creates an expensive upgrade problem tomorrow. We design EV infrastructure with the future fleet size in mind — providing supply headroom, cable routes and distribution capacity for the anticipated full deployment.
Technical detail
Standards & compliance
- BS 7671 — EV charge point circuit requirements
- OZEV PAS 1899 — electric vehicle smart charging
- Engineering Recommendation G99 / G98
- BS EN IEC 61851 — EV conductive charging systems
- Workplace Charging Scheme (WCS) compliance
Charge point types
- 7kW AC single-phase wallbox units
- 22kW AC three-phase units
- 50kW–150kW DC rapid chargers
- Smart OCPP-connected charge point management
- Tethered and untethered configurations
Electrical infrastructure
- Supply capacity assessment and reinforcement design
- Sub-main circuits from the main distribution board
- Cable routes, containment and cable management
- Load management system installation and commissioning
- Earthing and protection to BS 7671 and charge point spec
Grid connection & documentation
- DNO G99/G98 application management
- Smart metering and sub-metering provision
- As-installed drawings and circuit schedules
- BS 7671 test certificates
- OZEV Workplace Charging Scheme documentation
The Numbers
80
80 smart EV charge points installed across a multi-acre logistics depot — including DNO G99 application, grid reinforcement and load management system.
5MW
New HV transformer and LV distribution network installed under a DNO Section 16 contestable works agreement on our largest EV infrastructure project.
100%
Smart load management ensures all vehicles are charged by start of shift — without triggering demand penalty charges.
Why specify Con-Tec
EV Infrastructure Built for the Fleet You'll Have
Our EV Charging Approach
01
Supply & Fleet Assessment
Load flow assessment, supply capacity review and fleet charging demand modelling before any design work begins.
02
Design & DNO Application
Charge point layout, sub-main circuit design, load management specification and G99/G98 application submitted at the start of the design stage.
03
Installation
Sub-mains, cable routes, charge points and load management system installed by NICEIC-approved engineers — coordinated with the car park or site programme.
04
Commission & Handover
Smart charging system commissioned and tested, full BS 7671 testing, DNO confirmation and documentation package at handover.
Related Case Studies
Logistics operator
80-bay EV charging infrastructure for logistics hub
Eric Wright Group
Mixed-use commercial fit-out
North West Local Authority
Multi-site EICR programme across 47 public buildings
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What our clients say
“Con-Tec consistently meets the rigour our estates teams expect. Their compliance documentation, site discipline and turnaround on remedial works are exactly what large-scale healthcare contracts require.”
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We respond to every commercial and industrial enquiry within one working day. Share your scope and programme and we'll come back with lead engineers, approach and a clear cost envelope.