Which scope does EV charging go in?

VehicleWhere it chargesHow to count it
Company or leased EVYour own office, depot or shopAlready in your electricity bills (Scope 2). Don't add the miles.
Company or leased EVThe driver's home, paid for by youMiles × the EV factor (Scope 2), or the kWh you reimburse × the grid factor
Company or leased EVPublic chargersMiles × the EV factor (Scope 2), or the kWh on the receipts × the grid factor
Employee's own EV on businessAnywhereBusiness 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:

VehicleScope 1 (fuel)Scope 2 (charging)Scope 3 (grid losses)
Battery electric carnone0.043220.00429
Plug-in hybrid car0.144180.014050.00139
Petrol car0.25993nonenone
Diesel car0.27786nonenone
Battery electric vannone0.068560.0068
Diesel van0.41386nonenone

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

  1. Counting depot charging twice. If the vans plug in at your depot overnight, the electricity is on your bill. Leave those miles out.
  2. 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.
  3. 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.
  4. 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.