Rolls-Royce is developing what it hopes will be the world’s fastest all-electric aircraft, targeting entry into flight tests by 2020. The company aims to build a zero-emissions airplane capable of reaching speeds up to 300 mph.
Central to the program is a specially designed, high energy-density battery pack that Rolls-Royce says will be the most energy-dense system used in an aircraft to date. That battery technology is intended to deliver sufficient power for a range of roughly 200 miles on a single charge, enabling short-to-medium distance missions without producing direct carbon emissions.
If the development proceeds as planned, the prototype will take off from a runway on the Welsh coast in 2020 and will attempt to surpass the current benchmark for all-electric flight. The existing record—set by Siemens in 2017—stands at 210 mph for an electric aircraft.
The project is funded in part through the U.K. government initiative Accelerating the Electrification of Flight and seeks to demonstrate the potential of electric propulsion in aviation. Electric aircraft attract interest across the industry because they can reduce fuel costs, lower greenhouse gas emissions associated with conventional jet fuel, and operate with significantly reduced noise levels—an increasingly important factor as regulators and communities impose stricter noise limits.
Development of electric aviation is a global trend: more than 100 electric aircraft projects are underway worldwide, ranging from small trainers and urban air mobility concepts to regional electric or hybrid aircraft. Advances in battery energy density, power electronics, and electric motors are driving a steady progression from concept demonstrators toward practical, certified aircraft.
Rolls-Royce’s effort is one of several high-profile programs aimed at accelerating that shift. By focusing on a high-performance demonstrator that combines speed, a competitive range, and advanced battery technology, the company hopes to showcase how electric propulsion can meet demanding operational goals while helping to reduce aviation’s environmental footprint.