Workplace EV charging is quickly moving from a staff perk to a practical part of commercial electrical infrastructure. Employees want to charge while they work, businesses are transitioning fleet vehicles, and customers increasingly expect charging to be available at the places they visit.

Installing a few chargers may appear straightforward, but charger selection is only one part of the project. A successful workplace system needs to suit the site’s electrical capacity, parking patterns, users, operating hours and plans for future growth.

Here are the main questions to answer before choosing the equipment.

Who will use the chargers?

Start by defining the purpose of the installation. Workplace charging may be intended for:

• employees using their own vehicles;
• company passenger vehicles or light commercial fleets;
• customers and visitors;
• pool vehicles that must be ready at short notice; or
• a combination of these users.

These groups do not all have the same charging requirements. An employee’s car may remain parked for most of the day, while a fleet vehicle may need a guaranteed amount of energy before a scheduled departure. A visitor may only remain on site for an hour.

Without clear priorities, a business can invest in chargers that are faster or more complex than needed, or install a system that does not deliver enough energy to its operational vehicles.

How fast does the charging need to be?

The most powerful charger is not automatically the best choice. Charging speed should be matched to the time vehicles are parked and the energy they need before leaving.

AC charging is often suitable for workplaces where vehicles remain parked for several hours. Depending on the vehicle, electrical supply and charger configuration, common AC charging rates include 7.4 kW single-phase and 11 kW or 22 kW three-phase.

DC charging may be appropriate where vehicles have short turnaround times, high daily kilometres or a defined operational need for rapid charging. It generally requires a larger electrical allocation and a higher investment, so the business case needs to be clear.

A charging assessment should focus on required energy rather than charger nameplate ratings. If a fleet vehicle returns with 40 kWh to replace and is parked for eight hours, its average charging requirement is very different from a vehicle that needs the same energy in one hour.

Can the electrical supply support it?

EV charging introduces a substantial new electrical load. The site assessment should review the incoming supply, switchboards, current demand, distribution routes and the capacity that can be allocated without affecting normal operations.

Where several chargers are installed, load management can control their combined demand. Dynamic load management can reduce charging power when the building is heavily loaded and increase it when capacity becomes available. This allows the charging system to operate within a defined site limit.

Load management does not create electricity and it cannot solve every capacity constraint. It can, however, make far better use of the power already available and may reduce the scale or eliminate the need for electrical upgrades.

Who should have access?

An unrestricted charger may be suitable for a small private car park, but many workplaces need to control who can charge. RFID cards, user accounts or a charge point operator platform can be used to authorise drivers and record charging sessions.

Before deciding on a platform, consider:

• whether charging will be free, subsidised or fully charged to the user;
• whether employees, fleets and visitors require different access rules;
• who will manage users and pricing;
• what reporting the business needs;
• whether the chargers need to integrate with fleet or building systems; and
• whether public access may be offered later.

It is easier to establish these requirements before installation than to retrofit a billing or access system after the chargers are in daily use.

How will the system expand?

Many workplace projects begin with a small number of charging points. The expensive part of future expansion is often not the charger itself, but reopening cable routes, replacing switchboards or rebuilding communications infrastructure.

Future planning may include:

• sizing the EV distribution board and submains for later stages;
• providing spare conduits, pits or cable tray capacity;
• installing network infrastructure that can support more chargers;
• selecting scalable load management and access systems; and
• reserving practical car spaces for future charging.

Future-proofing does not mean paying for every future charger now. It means making sensible decisions during the initial work so later stages are less disruptive and expensive.

What happens after installation?

Commercial charging infrastructure should be commissioned, documented and supported. The business should know who to contact when a charger faults, how users are added, how software is accessed and what routine maintenance is required.

Clear handover information is particularly important when the charging system includes load management, networking, RFID access or a charge point operator. A charger that is electrically operational but poorly administered will still frustrate its users.

Start with requirements, not products

The best workplace charging system is designed around the organisation’s real use case. Before recommending equipment, we take the time to understand who will charge, how long vehicles are parked, what electrical capacity is available and how the system may grow.

Charging EVolution supplies and installs Schneider Electric EV charging infrastructure for workplaces and commercial sites across Victoria. We can assess your site, design the electrical and communications infrastructure, configure load management (if required) and provide a clear pathway for future expansion.