The global aircraft fuel cell auxiliary power units (APUs) market size reached approximately US$ 1.8 billion in 2022 and is projected to grow to US$ 5.7 billion by 2031, achieving a CAGR of 10.8% during the forecast period 2024-2031.This market revolves around fuel cell systems that provide auxiliary electrical power in aircraft, enabling lower emissions, quieter operation and reduced reliance...