A stand-alone power generation device that provides power to an auxiliary system on an airborne platform, includes a piezoelectric energy harvesting device and an energy storage unit, including a battery and a power conditioner. The device extracts energy generated by turbulent airflow around the platform and stores the energy to meet future power requirements. The piezoelectric energy harvesting device is located on a portion of an inner surface of an outward shell of the platform. The stand-alone power generation device is electrically connected to the auxiliary system. The stand-alone power generation device also includes a router that connects the power generation unit to the platform electrical distribution system. Excess power generated by the device may be delivered to the platform electrical distribution system for use by other platform systems.