Swedish-founded aerospace company Heart Aerospace has completed the first flight of its X1 full-scale hybrid-electric aircraft demonstrator, marking a major milestone in the development of commercial electric aviation.
The company conducted the flight on August 12, 2026, at its flight-test base at Plattsburgh International Airport in New York. The piloted mission lasted 27 minutes, with the aircraft reaching an altitude of approximately 1,100 feet.
Although Heart Aerospace is now headquartered in Los Angeles, the company was founded in Sweden and remains closely connected to the country’s rapidly growing aerospace and mobility ecosystem.
World’s largest battery-electric aircraft to fly
At 106 feet in wingspan and more than 25,000 pounds at takeoff, X1 is the largest battery-electric aircraft ever flown, according to Heart Aerospace.
The aircraft’s all-electric propulsion system delivered more than one megawatt of power during the flight. The test included taxiing, takeoff, climb, maneuvering and landing, with the mission designed to demonstrate electric flight at a scale relevant to commercial airline operations.
X1 operated entirely on batteries and consumed approximately $5 worth of electricity during the flight.
The aircraft flew under an FAA Special Airworthiness Certificate in the Experimental Category, allowing Heart to conduct its flight-test program.
Technology demonstrator for the ES-30
X1 is not intended to become a commercial aircraft itself. Instead, it is a full-scale demonstrator for Heart Aerospace’s planned ES-30, a 30-seat hybrid-electric regional aircraft.
The ES-30 is being developed as a conventional fixed-wing aircraft for FAA Part 25 certification, with entry into service currently targeted for 2031.
Heart says the aircraft could reduce operating costs by more than 40% compared with legacy regional aircraft. The projected savings would come from lower energy costs, reduced maintenance requirements associated with electric propulsion and greater aircraft availability enabled by an integrated electronics and software architecture.
The company is currently building the first pre-production ES-30 at its pilot manufacturing plant in Los Angeles, with flight testing expected to begin in 2028.
Airline interest
Heart Aerospace has already attracted commitments from major airlines, including United Airlines, Air Canada and JSX.
United Airlines CFO Michael Leskinen described the X1 flight as a major technical achievement and said the airline sees potential for electric commercial aircraft to improve the passenger experience while strengthening airline economics.
Air Canada has likewise invested in Heart Aerospace and the ES-30, viewing new aircraft technologies as one component of the broader transition toward lower-emission aviation.
Heart says it currently has $9.4 billion in customer commitments from leading carriers.
Electric aviation moves closer to commercial scale
The X1 flight comes as airlines face continued pressure to reduce fuel costs and emissions while maintaining affordable regional air connectivity.
Heart argues that electric propulsion could fundamentally change the economics of short regional flights by reducing energy and maintenance costs and making aircraft less exposed to fluctuations in global oil prices.
The company ultimately envisions electric aircraft enabling more frequent and affordable regional air service, including routes connecting smaller communities with nearby airports.
For Heart Aerospace, the first flight of X1 represents more than a technology demonstration. It is a test of whether electric propulsion can be scaled from small experimental aircraft toward the size and operational requirements of commercial airliners.
If the ES-30 reaches commercial service as planned in 2031, the aircraft could become one of the first meaningful attempts to bring electric propulsion into everyday regional airline operations.
Company: Heart Aerospace
Founded: Sweden
Headquarters: Los Angeles, United States
Sector: Aerospace / Electric Aviation
Aircraft: X1 demonstrator / ES-30 production aircraft
X1 first flight: August 12, 2026
ES-30 entry into service target: 2031
Customer commitments: $9.4 billion
