EV charging for business and fleets: where to begin?

The most common mistake on a professional charging project? Buying the chargers first. You pick an appealing model, place the order, schedule the installation… then discover on site that the available power can't keep up, that the vehicles don't stay parked long enough for the chosen power level, or that nothing has been planned to manage the charging or rebill the energy. The result: poorly sized equipment, unforeseen grid connection costs, and an infrastructure that is already saturated on its commissioning day.

Yet the charger is only the visible part of the project. What makes an installation successful is the upfront scoping: understanding the use cases, measuring the power actually available, choosing the right charging profile and organising operations over the long term. Here is a pragmatic method to approach your project in the right order and avoid the classic sizing pitfalls.

Scope the need before talking hardware

The first step is not technical: it consists of clarifying the use cases. A charger meant to recharge company cars overnight does not face the same constraints at all as a charging point for passing visitors, or as a utility fleet running all day long.

Before anything else, ask yourself the right questions:

• How many vehicles to charge today — and how many two or three years out?
• Which user profiles: employees, company cars, service fleet, visitors, customers?
• What actual parking times on site? A vehicle parked for eight hours does not have the same needs as a van that has to leave within the hour.
• What availability is expected: can a charger be occupied for several hours, or is fast turnover required?

This initial scoping determines everything else: number of charging points, power per unit, type of current (alternating or direct) and access management. That is precisely why an on-site audit is essential before any commitment. At Volticom, our in-house technicians travel to assess the existing setup and understand your business before recommending anything. Discover our full approach on our method page.

Choosing the right charging profile

Once the use cases are scoped, the right instinct is to start from the available parking time, not from the highest power on the market. The logic is simple: the longer a vehicle stays plugged in, the less power it needs to recover the required range.

Schematically, there are:

• Slow to standard AC charging (alternating current), suited to vehicles that park for long periods: employee parking, company cars charged overnight, office spaces.
• Accelerated AC charging, for more frequent turnover or intermediate presence times.
• Fast DC charging (direct current), reserved for cases where the vehicle has to leave quickly: tight logistics fleets, breakdown recovery, high-turnover transit points.

The table below gives a few purely illustrative examples to fix ideas. The actual values always depend on your site, your vehicles and the available power — they are determined during the audit.

Use profile	Typical parking time	Charging profile generally suited (illustrative example)
Company cars charged overnight	A full night	Slow / standard AC charging
Employee parking during the day	A working day	Slow to accelerated AC charging, shared
Passing visitors and customers	A few hours to half a day	Accelerated AC charging
Fast-rotation utility fleet	Under an hour to a few hours	Fast DC charging according to the real need

Keep in mind: these examples are only a reading grid. Oversizing is as penalising as undersizing — it inflates the connection and equipment costs without any usage benefit.

Sizing and managing the power

The most frequently underestimated point is the electrical power actually available on your site. Adding more and more chargers without accounting for the capacity of your grid connection can lead to overshoots, or even a costly reinforcement of the installation — exactly the kind of nasty surprise an audit rules out upfront.

Load management, the keystone of the project

This is where load management comes in. Rather than drawing maximum power on every charger simultaneously, a load management system intelligently distributes the available energy among the connected vehicles. In concrete terms, it makes it possible to:

• Respect the limit of the subscription or the grid connection, without overshoot;
• Prioritise certain use cases (a vehicle leaving early, a critical fleet);
• Smooth out consumption to avoid the peaks that inflate the bill;
• Avoid an electrical reinforcement that can often be done without when load management is well tuned.

Why it is central for a fleet

For a vehicle fleet, this logic is decisive. The vehicles often come back at the same time — at the end of the day, in the same slot — but they don't all leave at the same hour. Well-configured load management recharges each vehicle in time for its next departure, without oversizing the installation to absorb a theoretical peak that doesn't need to exist.

We detail this approach on our page dedicated to load management, and our solutions for vehicle fleets on the fleet solution page.

Supervise, manage access and bill with OCPP

Once the chargers are installed, you still need to be able to operate them over the long term. This is the blind spot of many projects: people think of the commissioning day, rarely of the three years that follow.

Supervision

Supervision makes it possible to monitor the status of the charging points in real time, detect a fault remotely and step in before a user finds themselves stranded. It also feeds back consumption data, indispensable for managing and billing.

Access management

In a professional environment, not everyone should be able to charge everywhere. Depending on your needs, you can:

• Reserve certain chargers for employees (badge, app);
• Open other points to visitors during defined slots;
• Track consumption per vehicle or per user.

Billing and the role of OCPP

The OCPP (Open Charge Point Protocol), the sector's open standard, is central here. It ensures interoperability between the chargers and the supervision system, guarantees the feedback of charging data and frees you from depending on a single, closed supplier. On the billing side, supervision makes it possible to rebill the energy consumed, allocate costs between entities, or handle a reimbursement to employees charging their company car.

At Volticom, supervision and after-sales service are handled in-house: a single point of contact throughout the lifetime of the installation, not a chain of subcontractors.

The stages of a well-run project

A professional charging project follows a clear framework, and it is respecting this order that prevents mistakes:

1. On-site audit — survey of the electrical installation, the real use cases and the siting constraints.
2. Sizing — number of charging points, power per unit and load management strategy.
3. Detailed quote — detailed, costed and surprise-free.
4. Installation — by QUALIFELEC-qualified IRVE technicians.
5. Commissioning, supervision and after-sales service — over the long term, with remote monitoring.

You will notice that buying the charger only appears after sizing: the exact opposite of the mistake mentioned in the introduction.

Plan for scalability from the start

A fleet grows, use cases evolve, regulation drives electrification. Designing the infrastructure as fixed is a costly mistake. A few precautions taken from the design stage avoid having to redo everything later:

• Reserve power on the grid connection for future additions;
• Plan the cabling and ducts for spaces not yet equipped;
• Choose load management and supervision able to absorb new chargers without an overhaul;
• Anticipate the most relevant locations in light of vehicle flows.

This way you can deploy a few chargers today and add more later without breaking the existing setup. It is often the soundest strategy: start as close as possible to the real need, with an expansion path already mapped out.

The incentives to know about

Some charging infrastructure projects can be supported by aid or subsidy schemes, subject to conditions. Rather than putting forward amounts that depend on your situation and change over time, we take stock case by case with you: eligibility, procedures and impact on the financing plan. All the details on the aid and subsidies page.

Frequently asked questions

How much does it cost to install charging stations for a business?

The price depends on the number of charging points, the chosen power (7.4, 11 or 22 kW) and the condition of your electrical installation. At Volticom, we cost it on a quote, free of charge and within 48 hours, across France, after an on-site audit. You receive a detailed, no-commitment quote so you can decide with full clarity.

Are there incentives to fund chargers for a business?

Yes, some projects can benefit from the ADVENIR scheme (subject to its rules) and eligibility. Rather than putting forward amounts that change over time, we check your eligibility and build the application case by case. This is part of our support, included in the free quote within 48 hours, across France.

Are your installers certified to fit IRVE chargers?

Yes. Our work relies on QUALIFELEC-qualified IRVE technicians (levels P1, P2 and P3) and the RGE qualification, throughout France via our certified installer partners. This certification is mandatory above 3.7 kW and conditions access to incentives such as ADVENIR. You therefore have clear accountability from end to end.

Is the installation compliant with the electrical standards in force?

Absolutely. Every installation complies with the NF C 15-100 standard, with a 30 mA Type B residual-current circuit breaker suited to electric vehicles. This compliance protects your installation, your staff and your vehicles. It is verified during the on-site audit, before any commitment on your part.

How long does it take to fit a charger on my site?

In most cases, fitting a charger takes half a day, once the sizing is validated. For a fleet rollout, the schedule is planned in advance and specified in the detailed quote. This way you limit the impact on your day-to-day business.

What warranty and after-sales service do you offer?

Our installations come with a decennial liability insurance policy with AXA, subject to the declared activities, limits and terms of the current insurance certificate, for peace of mind over the long term. Our after-sales service stays responsive, with a single point of contact from end to end, with no chain of subcontractors. Supervision and after-sales service are handled in-house.

What happens if a charger breaks down after installation?

Supervision detects faults remotely, often before you even get stranded. If a physical intervention is needed, our after-sales service travels, and the decennial liability insurance policy with AXA, subject to the declared activities, limits and terms of the current insurance certificate covers the equipment. A single point of contact follows your infrastructure throughout its lifetime.

Can I rebill the electricity consumed by company cars?

Yes. Thanks to the OCPP protocol and supervision, the energy consumed is measured precisely, per charger and per user. You can therefore rebill the kWh, allocate costs between entities or reimburse an employee charging their company car. Coupling this with load shedding also avoids exceeding the subscribed power.

Am I dependent on Volticom once the chargers are installed?

No. Our chargers communicate via OCPP, an open, sector-standard protocol that guarantees interoperability and the freedom not to depend on a single, closed supplier. You remain the owner of your charging data. Our in-house supervision nevertheless stays at your disposal for simplified monitoring.

How do I get a quote and start my project?

Simply contact us on 09 55 92 66 32 or by email at contact@volticom.fr to schedule an on-site audit. We survey your use cases and your available power, then provide you with a free, detailed, no-commitment quote within 48 hours, across France. You stay in control at every step, from scoping to commissioning.

The Volticom approach

Our conviction is simple: a good project is scoped before it is ordered. Our approach reflects this at every stage:

• On-site audit carried out by our teams, to start from the use cases and the power actually available — never from a catalogue.
• Sizing and load management strategy designed together, to recharge each vehicle in time without oversizing the installation.
• Detailed quote, detailed and surprise-free.
• In-house technicians qualified QUALIFELEC IRVE: no cascading subcontracting, clear accountability from end to end.
• In-house supervision and after-sales service, for a single point of contact throughout the lifetime of the infrastructure.

Do you have a charging project for your employees, your visitors or your fleet? Discover our business solutions or contact us for an on-site audit.