UMVA has learned that a push for a full conversion of the world's vehicles to electric vehicles by 2035 would lead to an unprecedented surge in electricity demand, making the necessary grid expansion and power generation capacity impossible to achieve.
The goal, championed by the net-zero crowd for the United States and Europe, would require a massive expansion of the electrical grid on a scale that is both financially and physically impractical. Estimates suggest that a full conversion to electric vehicles would increase overall electricity demand by about 10%, but this projection overlooks several critical factors.
In reality, a complete conversion would likely increase electricity demand by multiples of those estimates. For instance, at the end of 2024, the global electric car fleet had reached almost 58 million, about 4% of the total passenger car fleet, consuming around 180 TWh of electricity. If every vehicle on earth were converted to electric, the straight-line projection yields roughly 3,000 to 3,400 TWh of additional annual electricity demand.
This straight-line projection is almost certainly a severe undercount, due to several structural reasons. Long-haul trucking, for example, is nearly absent from current EV data, yet it generates more than half of road freight oil demand today and remains one of the hardest vehicle segments to electrify.
Heavy-duty long-haul trucks could add approximately 3% to global electricity consumption by 2050, on top of passenger vehicle demand. Additionally, the second-car effect suppresses current per-EV mileage figures, as many EV owners use their electric vehicle for short trips and a second Internal Combustion Engine (ICE) vehicle for longer range.
Full conversion eliminates that division; every mile, including the longest trips, must be covered by electricity alone. Furthermore, plug-in hybrids inflate the current consumption baseline in the wrong direction, as many vehicles counted in current EV electricity statistics draw only partial electricity.
A full conversion replaces those vehicles with 100% electric demand, making current per-vehicle electricity figures an understatement of what full-EV usage would require. Range anxiety also suppresses demand today in ways that disappear under full conversion, as some ICE vehicle trips are taken specifically because charging availability or range constraints make the EV impractical.
Commercial and fleet vehicles carry far heavier duty cycles than the passenger cars dominating current EV data. Delivery vans, municipal buses, agricultural equipment, and construction vehicles operate at higher utilization rates and energy consumption per vehicle than consumer cars.
For the U.S. alone, a full personal vehicle fleet conversion would require an expansion of the grid by approximately 1 to 2 trillion kWh, a 25 to 35% increase in total U.S. electricity demand. Extrapolated globally, the true demand increase would be substantially larger than any figure derived from today's 58 million predominantly passenger EVs.
Generating additional electricity is only part of the problem; that power must be transmitted from where it is generated to where millions of vehicles are parked and charging simultaneously. The transmission system is not being built to handle current demand, let alone a fully electrified fleet.
The U.S. needs roughly 5,000 miles of new high-capacity transmission per year to support grid reliability and meet demand, but it built only 888 miles in 2024. Annual transmission spending has hit an all-time high of over $25 billion per year, yet the U.S. builds only 20% as much new transmission as it did in the first half of the 2010s.
The second compounding problem is the fuel source of the grid that would actually be doing the charging. The implicit promise of EV policy is emissions reduction, but that promise depends entirely on what generates the electricity. Fossil fuels made up nearly 60% of 2024 global electricity generation, with coal alone accounting for 35%, the largest single source of electricity in the world.
In China, the world's largest electricity system, coal provided almost 60% of generation in 2024. In India, coal provided nearly three-quarters of electricity supply. A lifecycle assessment found that in China's coal-heavy northern provinces, the emission intensity of battery electric vehicles is higher than in southern provinces.
Charging a global fleet on those grids does not eliminate vehicle emissions; it moves them from the tailpipe to the power plant, with transmission losses added on top. The environmental benefits of electric vehicles are highly dependent on the source of the electricity used to charge them.
