IONNA Takes Top Spot at Debut: 2026 JD Power U.S. Public Fast-Charging Satisfaction Rankings

IONNA, a public fast-charging network founded less than two years ago, claimed first place in JD Power's 2026 U.S. Electric Vehicle Public Charging Experience Study — scoring 807 points (out of 1,000), the highest among all rated networks, surpassing Mercedes-Benz's charging network (797 points) and Rivian's Adventure Network (755 points). This marks the first time three automaker-backed networks jointly qualified for evaluation — and they swept the top three spots.

As of the latest count, IONNA has built 150 charging sites with 1,375 DC fast-charging ports deployed. Its flagship facility — the 'Rechargery' — goes beyond traditional single-pole chargers, integrating high-power DC fast charging, shaded canopies, restrooms, light dining options, lounge seating, and multi-vehicle charging bays. The network is jointly supported by BMW, General Motors, Honda, Hyundai, Kia, Stellantis, TOYOTA, and Mercedes-Benz; hardware is supplied by Alpitronic, while the software platform is internally developed.

Seth Cutler, CEO of IONNA, stated in a recent video interview: "We're not pioneers — so we've had the advantage of learning from industry experience. The core metric for reliability is 'first-attempt success rate' — our goal isn't to catch up, but to redefine quality standards for public charging."

JD Power noted that emerging automaker-cooperative networks excelled particularly in three subcategories: 'charging convenience,' 'real-world charging speed,' and 'charger availability' — with some scores exceeding the industry average by over 100 points. Overall, U.S. public DC fast-charging satisfaction rose 12 points year-on-year to 666 points, driven notably by improvements in charger availability (+27 points), perceived safety on-site (+18 points), and pricing transparency (+18 points). The single-session charging failure rate hit its lowest level since the study launched in 2021 — 12% in the most recent quarter, down two percentage points year-on-year.

Notably, public AC Level 2 slow-charging satisfaction declined, dropping 12 points year-on-year to 595 points — mainly due to payment process friction and increased startup failures. Although 'slow charging speed' remains the top complaint cited by both Level 2 and DC fast-charging users, dissatisfaction on this point has narrowed consistently across multiple quarters for DC fast-charging users.

Location strategy also proved critical: DC fast chargers located at hotels scored highest (692 points), followed closely by those at gas stations/convenience stores (689 points) and restaurants (688 points); chargers at dealership lots scored only 570 points, while standalone parking garages/lots scored 606 points. This gap validates IONNA's heavy investment in site design and ancillary services — users want more than raw power output; they need a safe, comfortable space where 20–30 minutes of charging feels well spent.

This study is based on survey responses from 6,594 battery-electric and plug-in hybrid vehicle owners collected between January and June 2026.