US EV Charging Speeds Increase with More High-Speed Stations

The Rapid Evolution of EV Charging: Speed and Efficiency on the Rise

The landscape of electric vehicle (EV) charging is rapidly transforming in the United States, as technological advancements in both vehicles and charging infrastructure are significantly reducing the time needed to recharge. This evolution addresses one of the primary concerns potential EV buyers have had: the lengthy time it traditionally takes to charge an electric vehicle.

According to Paren, a data platform specializing in EV infrastructure, the number of ultra-fast charging stations increased by about 11,300 last year, marking a 48% rise from 2024. Impressively, nearly 25% of new chargers installed in the fourth quarter boasted speeds of 250 kilowatts or more, capable of adding 100 miles of range in under 10 minutes.

Badar Khan, CEO of EVgo Inc., one of the largest charging networks in the US, remarked, “Rising charge rates are a significant tailwind. If the energy is going in faster, you don’t actually need higher utilization.” This development has already led to a decrease in utilization rates for EVgo’s chargers, as they deliver more electricity per hour. As charging speeds increase, it not only satisfies drivers but also strengthens the business model for charging networks, potentially swaying more EV skeptics.

A Deloitte survey highlighted that charging time is the second-largest concern for potential EV buyers, trailing only driving range and ranking above cost concerns. The speed of charging is influenced by multiple factors, including the type of vehicle and ambient temperature, but the charger’s capacity is often the most significant. For instance, a 300-kilowatt charger can theoretically charge a 100-kilowatt-hour battery from empty to full in about 20 minutes, compared to an hour with a 100-kilowatt charger.

EVgo’s network now includes about 60% of charging cords at 350 kilowatts or more, a substantial increase from 15% four years ago. Khan noted, “Pretty much everything we’ve been installing in the last two or three years is 350 [kilowatts]. If the driver is charging the same amount of kilowatt-hours, then the session times will go down.”

The strategic goal for charging networks has been to strike a balance between high enough traffic to ensure profitability without causing excessive wait times for users. With faster charging technology and vehicles capable of quicker charging, stations can reduce the time needed for each session, thus minimizing queues.

Krishna Esteva, head of product at Stable Auto, a company that advises on charger placement, commented on the economic benefits of this trend: “It’s good for the drivers … and it’s good for the station owners because each station you deploy is getting more profitable over time.” Although establishing fast stations is costlier, the increased efficiency could mean fewer are needed overall.

Vehicle manufacturers play a critical role as well. Electrify America LLC, managing around 1,100 public stations across North America, has standardized 350-kilowatt chargers for seven years, anticipating an influx of vehicles needing faster charging. CEO Robert Barrosa stated, “Everybody called us crazy in 2018, but now, everyone is doing it, even Tesla.”

Automakers have enhanced their vehicles’ circuitry and software, enabling faster charging. The Chevrolet Bolt, once charging at 55 kilowatts, now supports up to 150 kilowatts, though many current EVs can handle 300 kilowatts or more. Electrify America is pushing for even faster solutions, constructing 400-kilowatt chargers and exploring higher capacities. Meanwhile, BYD Co. Ltd. of China has introduced vehicles capable of charging at 1,000 kilowatts, though these are not yet available in the US.

Barrosa concluded that the progression of charging technology creates a beneficial cycle: expanding charging infrastructure will boost EV sales, which will, in turn, increase charging revenues. “When you buy an electric car, that’s the first thing you think about,” he noted. “We’ve got to get that calculus out of consumer minds to really make the transition happen faster.”