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World Economy
Mar 28, 2026

UK's Electric Vehicle Fleet: A Potential Solution to Fuel Reserve Worries

AI Summary
The UK's adoption of electric vehicles could significantly reduce its petrol and diesel consumption, thereby extending its fuel reserves. Analysis suggests that if Britain had as many electric cars per head as Norway, its fuel reserve could increase by seven days. Existing electric and hybrid cars are already saving about two days' worth of fuel.

The ongoing Iran war has led to a surge in petrol and diesel prices, sparking concerns about fuel rationing across Europe and calls for Britain to increase North Sea oil and gas production. However, experts suggest that a more effective solution lies in promoting electric vehicles (EVs).

According to analysis by Mandala Partners, if the UK had the same proportion of electric cars as Norway, its fuel reserve could increase by seven days. Currently, the UK has about three weeks' worth of car fuel in reserve. Norway leads the world with nearly 32% of its cars being fully electric, compared to 5.4% in the UK.

Even with the existing number of electric and hybrid cars on British roads, they are already saving about two days' worth of fuel. This is particularly significant given that Shell's chief executive, Wael Sawan, has warned that Europe could face fuel shortages as early as April if the Strait of Hormuz remains closed.

The potential impact of EVs goes beyond just reducing petrol and diesel consumption. Every electric car charged from the grid rather than the pump extends the country's fuel reserves. Moreover, with the right technology, EVs could become an active buffer against future energy shocks by storing and resharing energy.

Vehicle-to-grid technology, which allows EVs to send energy back into the power grid, could make a significant difference in an energy supply crisis. An electric car usually holds about 40 kilowatt-hours of power, enough for an average UK home for several days. This technology could enable millions of car batteries to supply power to the grid when demand spikes.

Despite these benefits, the adoption of EVs and vehicle-to-grid technology faces challenges. Tax policy is a significant barrier, as EV owners pay tax on electricity when filling their car battery and again when selling it back to the grid. Additionally, the hardware for two-way charging is not yet widely available, although many electric cars are already capable of it.

The energy regulator Ofgem has suggested that if half of the expected 11m EVs on UK roads by 2030 were capable of two-way charging, they could send 16 gigawatts of power back to the grid each day, almost half the output of Britain's gas-power station fleet.