The X1, with a 106-foot wingspan and a takeoff weight exceeding 25,000 pounds, successfully completed its maiden voyage on August 12, 2026, at Plattsburgh International Airport. During the test, the aircraft's propulsion system generated over one megawatt of power, consuming only five dollars worth of electricity—a stark contrast to the volatility of global jet fuel markets.
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Heart Aerospace Flies World's Largest Electric Aircraft
Rising over the Champlain Valley at sunrise, the X1 demonstrator became the largest battery-electric aircraft to ever take flight. The 27-minute mission in upstate New York marks a transition point for the industry, proving that heavy, commercial-scale airframes can operate reliably on electric power alone.
This demonstrator serves as the blueprint for the ES-30, a 30-seat hybrid-electric airliner currently in development. Heart Aerospace aims for a 2031 entry into service, projecting that the shift to electric propulsion will slash operating costs by more than 40% through simplified maintenance and energy efficiency. Major carriers, including United Airlines and Air Canada, have already secured commitments for the aircraft, signaling a shift toward regional electrification. With the X1 program now validated, the company is moving to its Los Angeles facility to begin building the first pre-production ES-30 units, with flight testing slated for 2028.
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