Electric vehicle charging costs actually rose only marginally in the past three months, despite claims to the contrary amid the energy crisis, new data has found.

Mina says that the vast majority of EV charging is carried out at home – accounting for 92% of all charging

Mina’s data across more than 60,000 charging events showed the average price of home electricity for EVs stayed level during September at 26p, then rose to 30p in October, and 31p in November.

For those that need to charge in public though, the story was different, with an average price rise of 14p to 70p per kWh over the same period.

But while data from the RAC last week indicates that EV drivers using rapid chargers are paying more to top up their batteries than petrol drivers are shelling out for fuel, Mina says that the vast majority of EV charging is carried out at home – accounting for 92% of all charging.

And CEO Ashley Tate said home charging remains “incredibly good value”.

He added: “Our data shows that there is scope for more savings because the 30p per kWh average suggests not enough drivers are accessing the much lower EV-specific or off-peak tariffs available.

“But even at the current 30p per kWh average, a 70kWh capacity EV being charged fully at home in September would have cost, on average, £18.20. By late November it would have been £21.70. Assuming a 250-mile range, that’s an average increase of only 1.4p per mile.”

When the increasing efficiency of new electric cars is factored in, Mina’s research found that the average real-life pence per mile cost across all journeys only went up 2p per mile during those three months.

“Even with the on-set of winter affecting battery efficiency and the electricity price rises, the increasing number of new, more efficient cars and drivers getting smarter about how they use and charge them has seen real-life, on-the-road costs rise only marginally. It doesn’t play to the vocal number of EV critics, but this is the reality,” Tate added.

Advisory Electricity Rate still leaving drivers out of pocket

One area where Mina itself is critical is the Advisory Electricity Rate for business mileage reimbursement. The company’s analysis found that despite the rise to 8p per mile in the autumn, 80% of all journeys charged at home (and 100% of public charging) still cost more, meaning business drivers would be out of pocket using today’s rate. When compared to the previous 5ppm AER figure, virtually all (96%) of charges at home, and 100% in public, were over this rate.

Mina’s data on behavioural trends also shows that in the vast majority of cases, public charging is being used as a top-up rather than for a full charge. In that sector, prices have risen far quicker because unlike home electricity, which is capped, public charging energy is not, therefore providers have no choice but to pass it on.

Charge point operators have also been hit by increased business rates and all the other inflationary issues that companies face: rising maintenance costs, wages and interest rates. Added to which is that through the autumn and winter there is usually less cheap renewable energy available.

“Yes, there is a need for public charging, and costs have risen in that sector, but when you look at real-life examples rather than making theoretical assumptions, the vast majority of EV drivers aren’t doing full charges in public, which mitigates against the price rises,” Tate added.

Key findings from the Mina EV Report – Autumn 22:

• The average cost of home charging was 30p per kWh, up 4p from the summer.
• Public charging rose 14p, to 70p per kWh.
• 92% of all charging is undertaken at home.
• 80% of all journeys charged at home, and 100% of public plug-ins, cost more than the Government’s 8p per mile Advisory Electricity Rate.
• The peak plug-in time on the UK’s public network is between 7 and 8am on weekdays, and the second busiest time is between 11am and midday.
• There are more than 800 home electricity tariffs – making it confusing for drivers to pick the right one for them.

More analysis and insights into charging costs, tariff choices, charging behaviour and real-life examples of EV drivers are revealed in the new report.

“Our first report illustrated that at Mina we have the definitive view of what’s really going on with EVs on our roads, and this second issue builds an even more vivid, complete picture that will probably surprise a few people,” said Tate.

To download a copy of Mina’s Autumn Report, click here.