Advancements in solar cell and battery technology are enabling our AALTO Zephyr High Altitude Platform Station (HAPS) to continually beat records of flight endurance. From a 26-day world-record endurance in 2018, to over 64 days in the stratosphere in 2022.

During the day, Zephyr's secondary batteries recharge using solar energy, ready to power both the aircraft and the payload during the night.