Which scope does EV charging go in?
| Vehicle | Where it charges | How to count it |
|---|---|---|
| Company or leased EV | Your own office, depot or shop | Already in your electricity bills (Scope 2). Don't add the miles. |
| Company or leased EV | The driver's home, paid for by you | Miles × the EV factor (Scope 2), or the kWh you reimburse × the grid factor |
| Company or leased EV | Public chargers | Miles × the EV factor (Scope 2), or the kWh on the receipts × the grid factor |
| Employee's own EV on business | Anywhere | Business miles × the grey fleet factor (Scope 3, business travel) |
The simplest approach for most firms: use miles for every vehicle, then take out the miles that were charged on your own meters. Mixing miles and kWh for the same trips is how double counting creeps in.
The 2026 factors per mile
Government factors for an average-sized vehicle, kg CO2e per mile, excluding well-to-tank:
| Vehicle | Scope 1 (fuel) | Scope 2 (charging) | Scope 3 (grid losses) |
|---|---|---|---|
| Battery electric car | none | 0.04322 | 0.00429 |
| Plug-in hybrid car | 0.14418 | 0.01405 | 0.00139 |
| Petrol car | 0.25993 | none | none |
| Diesel car | 0.27786 | none | none |
| Battery electric van | none | 0.06856 | 0.0068 |
| Diesel van | 0.41386 | none | none |
The electric factors already allow for charging losses, and they fall each year as the grid gets cleaner. If you know the kWh instead, the 2026 grid electricity factor is 0.13096 kg CO2e per kWh.
A worked example
A firm runs 2 electric vans, each covering 18,000 miles a year. The drivers charge at home, with the firm paying, and on public chargers:
- 36,000 miles × 0.06856 = 2,468 kg CO2e, Scope 2
- 36,000 miles × 0.0068 = 245 kg CO2e, Scope 3 (grid losses)
- Total: 2.71 tonnes
The same miles in average diesel vans would be 14.90 tonnes of Scope 1, so the switch cut this part of the footprint by about 82%. That is the kind of dated, measured action a Carbon Reduction Plan should show.
Things that trip people up
- Counting depot charging twice. If the vans plug in at your depot overnight, the electricity is on your bill. Leave those miles out.
- Putting EVs in Scope 1. Scope 1 is fuel burned in your vehicles. A battery electric vehicle burns none, so its emissions are Scope 2.
- Forgetting the petrol in a plug-in hybrid. Use the plug-in hybrid factor, which gives a Scope 1 and a Scope 2 line from the same miles. Better still, if you have fuel cards, count the litres of petrol and the charging kWh directly.
- Treating staff-owned EVs as company vehicles. An employee's own car is always grey fleet, Scope 3, however it's powered.
Electric vehicles and SECR
SECR asks for energy in kWh as well as emissions. The government publishes separate kWh-per-mile figures for the electricity used by electric vehicles, so you can report fleet energy even when all you have is mileage.
How Carbon Recycling helps
Add each vehicle's miles with its fuel type and Carbon Recycling splits plug-in hybrids into their Scope 1 and Scope 2 parts, puts grid losses in Scope 3, and applies the right year's government factors. Your report shows the switch to electric as a real, dated reduction.