EVgo said on September 29 that its next-generation charging system, built with Delta Electronics and capable of 750 kilowatts, could charge the fastest-charging EVs sold in the United States in around 10 minutes. The company is testing the hardware at its Innovation Lab in El Segundo, California, and plans to reveal the final design and begin deployment in 2027.
Chief executive Badar Khan said charge rates seen on the EVgo network are up nearly 20 percent in the last two years, and that the new architecture will help meet growing demand for high-power charging. The 10-minute figure is a company projection, with no battery window attached to it.
The arithmetic behind a 10-minute claim
Power is energy delivered per unit of time, so 750 kilowatts held for 10 minutes would move 125 kilowatt-hours. Real sessions do not run flat. A battery accepts its peak rate only across part of the charge and tapers as it fills, which is why EVgo’s announcement qualifies the claim: the time depends on the vehicle’s charging speed and settings, battery condition, ambient temperature and initial state of charge.
EVgo has not published a voltage or a state-of-charge range for the 10-minute estimate, and Electrek’s report on the plan notes the same gap. As arithmetic only, not an EVgo specification, 750 kilowatts at 1,000 volts is 750 amps, and at 800 volts it is about 940 amps, currents that explain why cable handling and heat are central design problems at this power. The release lists easier-to-handle cables among the features.
Dynamic power sharing across stalls
The 750 kilowatts describes what the system can supply, not a promise that every stall delivers it. The release says dynamic power sharing automatically adjusts energy distribution in real time so each dispenser gives a vehicle what it needs, which means a driver does not have to hunt for a particular power-level stall. Electrek reports that the system distributes power among multiple stalls and adjusts each share as battery needs change.
The idea traces to EVgo’s 2024 plan with Delta. In an October 2024 memorandum of understanding, the two companies described 400-kilowatt dispensers sharing power across up to six stalls, with contactless payment and longer cables, and targeted completion of design and testing in the second half of 2026. EVgo president Dennis Kish said at the time the company was advancing long-term solutions to maximize convenience and improve reliability, and Austin Tseng, president of Delta Electronics Americas, said Delta was looking forward to redefining the customer experience.
The 2024 document also set economics next to the engineering. EVgo said it was targeting a 30 percent cut in gross capital expense per stall and an increase of nearly 20 percentage points in peak power delivery across its network. Sharing one bank of power electronics among several stalls is the mechanism for both: a cabinet that serves six stalls at once costs less per stall than six dedicated units, and it can direct a surge of power to the one car that can use it while the others draw less.
Six stalls on a 750-kilowatt supply would average 125 kilowatts each if all were occupied by cars drawing equally, a figure that shows why the sharing logic, and not the advertised rating, decides what a driver sees. EVgo has not said whether the 2026 design keeps the six-stall layout from the 2024 plan.
From 350 kilowatts to 750
EVgo and Delta have worked together since at least August 2022, when Delta announced a strategic collaboration with EVgo to widen nationwide access to charging. In September 2023, EVgo received its first shipment of Build America, Buy America compliant 350-kilowatt chargers from Delta’s Plano, Texas, plant, ten units that qualified for federal NEVI program funding. The 750-kilowatt system is therefore more than double the rating of that earlier hardware.
The 2027 date is a slip. The 2024 memorandum pointed to the second half of 2026, and Electrek describes the new timing as a delay from that projection. Connectors on all stations will be NACS, the standard EVgo says expands its addressable market, and the design draws on data from 1.8 million customer accounts and more than 10 million charging sessions a year, which the company says informed touchless payment and cable changes.
In 2027, when EVgo reveals the final design, two numbers will decide whether the 10-minute figure holds: the stall count per cabinet and the share of the 750 kilowatts a single car can take while neighboring stalls are busy. Electrek’s report points to the same test, which only shows when several vehicles charge at once. Without a published state-of-charge window and a per-stall minimum, the 10-minute claim remains a best case for a car built to take the full rate.
This article was produced with the assistance of AI and reviewed by Morning Overview editors prior to publication.
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