Recently, the American company Heart Aerospace conducted the first flight of the Heart X1. Officially, it stands as the largest battery-powered aircraft to have taken to the skies. However, it should be noted that this was merely a test flight, meaning that commercial flights are still a distant prospect.
Electricity cost of only five dollars
First, it is important to understand that the Heart X1 is an experimental aircraft serving as a test bed. Its wingspan measures 32.3 meters, its length 23.2 meters, and its takeoff mass exceeds 11.3 tonnes. In a press release published on August 13, 2026, Heart Aerospace confirmed that the first flight of this aircraft was successfully completed, making it the largest electric aircraft to have flown in history.
The takeoff took place from Plattsburgh International Airport in New York. On board, there was only a single pilot (no passengers). The flight lasted 27 minutes, with an impressive electricity cost of just five dollars. Additionally, Heart Aerospace stated that the aircraft’s system delivered more than one megawatt of power.
« This flight occurred in a context of rising global kerosene prices, which averaged $3.50 per gallon for the week ending August 7, representing a 63% increase over the previous year. This situation highlights the potential of electric propulsion to structurally reduce operating costs for aircraft while freeing airlines from the volatility of global oil markets. », reads the press release.
The production version will not be 100% electric
Although the heralded flight was only a test, Heart Aerospace’s objective is clearly to commercialize its serial ES-30 model, following the successes of the Heart X1 tests. The market entry is expected in 2031, with several airlines such as Air Canada and United Airlines already having placed pre-orders. The company promises a 40% reduction in operational costs compared with traditional regional aircraft. Indeed, the ES-30 will be a short-haul aircraft designed for short distances.
The serial ES-30 model will feature market-adapted characteristics. It will accommodate around thirty passengers and will incorporate a hybrid-electric propulsion system (turbogenerators). As the company explains, the aircraft will include an auxiliary thermal engine to extend its range to 800 km, to offset the heaviness and the limited range of current batteries, which are restricted to 200 km in 100% electric mode.
Pushing the Heart X1 to its limits
Following this initial successful test, the Heart X1 is expected to undertake a series of additional flights. Engineers will attempt to push the prototype to its limits to measure the real-world performance of the electric system under varying weather conditions. They will also analyze the aircraft’s behavior in the face of wind and during tight turns, as well as assess how the battery packs will cope with repeated cycles of discharge and rapid ground charging.
By 2028, Heart Aerospace plans to manufacture the first ES-30 pre-production unit and launch a new round of flight testing. The goal will be to obtain approval from the Federal Aviation Administration (FAA), more precisely FAA Part 25 certification permitting the carriage of paying passengers. This will mark the final step before the aircraft’s commercialization.
