Home charging: the overlooked blind spot of fleet electrification (2026)
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For most electrified fleets, home is where the majority of charging energy is actually delivered, roughly 60% to 80% of it, yet it is the one location almost no fleet tracks properly. That gap quietly drains budgets, creates compliance exposure and frustrates drivers.
This article, written for fleet managers, CFOs and sustainability and mobility leads, explains why home charging is the real blind spot of electrification and gives you a concrete way to close it, without buying a single piece of hardware.
Why most fleet charging actually happens at home
Here is the counterintuitive part: the more successful your electrification, the more your charging shifts away from where you can see it. Studies consistently put the share of EV charging done at or near home in the 60% to 80% range, with single-family homes alone accounting for a large majority of energy delivered.
The reason is simple economics. Home charging costs roughly two to three times less per kWh than public fast charging (up to five times less on a dedicated off-peak tariff), so any driver with a driveway or a garage plugs in at home by default.
That is exactly what you want financially. It is also exactly what makes the cost invisible, because the energy leaves through the driver's own domestic electricity meter, not through a fuel card or a corporate charging network.
Where charging happens | Approx. share of fleet energy | Tracking difficulty |
|---|---|---|
Home (driver's own supply) | 60% to 80% | Very high, invisible on any corporate account |
Public / on-the-road | 10% to 25% | Low, itemised on fuel or charge cards |
Workplace / depot | 5% to 15% | Low to medium, metered on site |
Why home charging is the hardest to track and reimburse
Public charging is easy: a card is tapped, an itemised receipt appears, reimbursement is trivial. Home charging is the opposite.
The kWh consumed by the company car are mixed into the driver's household bill alongside the fridge, the heating and everything else. To reimburse fairly you have to isolate the vehicle's real consumption, apply the driver's actual electricity tariff (which varies by supplier, by region, by peak and off-peak hours, and by whether they have solar panels), and do it every month for every driver.
Most fleets never solve this cleanly. They either fall back on a flat rate per kWh, which is almost always wrong, or they push a manual spreadsheet process onto drivers and payroll.
Both approaches break at scale, and both are covered in more depth in our guide to flat-rate vs actual cost.
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The real cost of ignoring the blind spot
Leaving home charging unmanaged is not a neutral choice. It costs money, creates risk and erodes trust, all at once. For a CFO, the flat-rate leakage alone is usually the single largest hidden line in an EV fleet's running cost.
- Cost leakage. A flat rate set too high overpays every driver every month; set too low, it silently forces drivers to subsidise the company. On a fleet of a few hundred cars, a wrong rate applied to thousands of sessions a year turns into a five or six figure annual variance nobody planned for.
- Compliance exposure. In France, home-charging reimbursement has to stand up to URSSAF scrutiny, and a flat rate with no per-session evidence is difficult to defend in an audit. Equivalent tax and social-charge rules apply across most European markets. No audit trail means the reimbursement can be requalified as taxable benefit.
- Driver frustration. Around 15% of companies with EVs still offer no direct reimbursement for home charging at all. When drivers feel they are financing the company's fleet from their own electricity bill, adoption stalls and the electrification programme loses internal goodwill.
- Distorted reporting. If 60% to 80% of your energy is untracked, your cost-per-km, your CO2 reporting and your TCO models are all built on a guess.
How to close the gap: a practical checklist
Closing the blind spot does not require rewiring anyone's house or issuing a connected cable per car. It requires visibility on the real session and the real tariff, then a clean monthly reimbursement. Use this checklist to pressure-test any approach, internal or vendor-supplied.
- Capture every home session per vehicle: date, duration, kWh and cost, with fraud made impossible because each session is tied to a specific car.
- Reimburse at actual cost, to the cent, using the driver's real electricity tariff rather than a one-size-fits-all flat rate.
- Work on any setup: any charger, any cable, any socket, with or without a smart meter, in a flat, a house or with solar panels, and with no hardware to configure per driver.
- Generate a compliant monthly justification automatically (URSSAF-ready in France), so every euro reimbursed carries its own audit trail.
- Feed the data back into your dashboards and payroll or HR system, so home charging finally appears in your TCO and CO2 reporting.
- Keep the driver experience to a couple of minutes of setup and zero monthly admin, because anything heavier will not survive contact with a real fleet.
Closing the blind spot in software, not hardware
This is precisely the problem Voltaback exists to solve, and it does it as a 100% software platform with no hardware at all. It tracks each home-charging session per vehicle, reimburses at real cost using each driver's actual tariff, and generates a URSSAF-compliant justification every month, on any installation, even in a co-ownership building or with solar panels, without configuring a charger.
Because there is no equipment to buy per car, it scales with the fleet instead of against it. The accuracy of the calculation has been independently audited by Bureau Veritas with a 1.22% average relative error, the reimbursement model is backed by a formal URSSAF ruling, and more than 180 companies already rely on it, including over 15% of the CAC 40 such as Equans, BNP Paribas, Lyreco and Sodexo.
If you want the mechanics of the reimbursement itself, our detailed walkthrough on home charging reimbursement covers it end to end, and the greening your fleet roadmap shows where it fits in the wider electrification plan. Book a demo to see your own numbers.
FAQ
For most company car drivers, home is the dominant location, with studies putting the share of charging energy delivered at home in the 60% to 80% range. It is where charging is cheapest, so drivers default to it, which is also why it is the hardest cost to see.
Public sessions come with an itemised card receipt. Home charging is buried inside the driver's domestic electricity bill, mixed with household use, on a tariff that varies by supplier, region and peak or off-peak hours. Reimbursing fairly means isolating the vehicle's real consumption and applying the real tariff, every month, per driver.
You get cost leakage from wrong flat rates, compliance exposure because a flat rate with no per-session evidence is hard to defend in an audit (URSSAF in France, equivalent rules elsewhere), driver frustration when people feel they are subsidising the fleet, and distorted TCO and CO2 reporting because most of your energy is untracked.
Rarely. A single flat rate overpays some drivers and underpays others every month, and it leaves no per-session audit trail. Reimbursing at actual cost is both fairer and safer. We compare the two approaches in detail in our flat-rate vs actual cost guide.
Yes. A software approach reads each real charging session and the driver's actual tariff, then produces a compliant monthly reimbursement, on any charger, cable or socket. Voltaback does exactly this with zero hardware, which is what lets it work in flats, houses and solar-equipped homes alike, and scale across a whole fleet.
Written by Aubin Aycaguer, Chief of Staff at Voltaback. Voltaback is a 100% software platform that tracks and reimburses home charging for company EV fleets, at actual cost and fully compliant, with no hardware to buy or configure.
