The UK’s ambitious target to increase electric vehicle (EV) sales to 80% of all new car purchases by 2030 could result in them accounting for up to 5% of total power demand, according to energy analysts at Montel, though there are concerns whether capacity buildout will be adequate.
As the UK government works towards a carbon-free grid by the end of the decade, the expected rise in EV adoption presents both opportunities and challenges for the nation’s energy infrastructure. If the sales target is achieved, the National Electricity System Operator forecasts a significant surge in electricity demand, with cars alone accounting for a 143% rise in annual electricity consumption by 2029. The total increase in demand from EVs could add 17.12 TWh to the grid, up from just 7.05 TWh in 2025.
Fintan Devenney, senior energy analyst at Montel, calculated the power increase by analysing data from the National Electricity System Operator. The 80% EV goal, along with having the required capacity to cope, is possible “if everyone steps up their game”, he says. Even then, however, “it’s going to require everything that could possibly go wrong to go right”.
While this rise in demand is seen as manageable due to an anticipated growth in renewable energy sources, experts are warning of the “Herculean task” of expanding the UK’s green energy capacity to meet this rising need. The government aims to build a “clean” power grid, with offshore wind projected to nearly triple by 2030. However, industry analysts are sceptical, noting that the shift from fossil fuels to renewable sources of power will require an immense effort from the government, grid operators and energy producers.
Brian Gregory, policy director at the Alliance of British Drivers, thinks the 2030 EV target is overly ambitious. He told Montel the plan could be hindered by “unreliable” renewable sources, which may lead to grid instability and power shortages.
Despite these concerns, some industry figures are more optimistic. Ben Nelmes, CEO of green non-profit New Automotive, believes the target is achievable if the government continues its efforts to incentivise EV adoption and scales up charging infrastructure. However, the rapid expansion of public charging points remains a critical challenge, as the UK currently lags behind countries like Norway in terms of charger availability.
With a significant push from government investment in EV infrastructure, such as the £2 billion for domestic manufacturing and £300 million to boost EV uptake, the UK is hoping to avoid a major setback on its road to electrification. However, the success of these efforts hinges on coordination, planning and rapid action in the years leading up to 2030.
As the country moves toward a greener future, analysts stress that the UK’s energy system will need to evolve to accommodate the changing demands of a nation transitioning to electric mobility.
