G Warwick, Tech Take, UK challenge to enable electric regional flight, Aviation Week & Space Technology, 24 November - 7 December 2025, p 55

In UK,  the Faraday Institution has set the performance targets for satisfactory application to future flight requirements in the form of a High Performance Cell challenge.   These comprise a pack energy density of 1000 Wh/kg with a peak power density above 1500 W/kg (roughly triple current levels).