The Hy4

The HY4 - the world's first four-seat passenger aircraft with hydrogen fuel cell technology and electric drive. It marks a milestone on this journey

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The Concept

The emission-free hydrogen fuel cell technology enables an alternative, full electric dirve but with longer range than pure battery systems.

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H2FLY

H2Fly is the operator of the HY4 and handles the approval of the sophisticated technology.

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Press releases

The Hy4 is present in many media. You will find a small selection here.

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HY4 - The revolution of aviation

Passenger aviation without noise, soot particles and carbon dioxide - in short "emission-free flying" - has evolved from vision to reality. The HY4 - the world's first four-seat passenger aircraft with hydrogen fuel cell technology and electric drive - marks a milestone on this journey. The electric flying with the HY4 is quiet, protects the environment and increases the range and safety compared to conventional combustion drives or full battery applications. Long-standing aerospace and energy research activities in the fields of batteries, fuel cells and hydrogen technology make the Hy4 team experts in the fields of More Electric Aircraft (MEA) and All Electric Aircraft (AEA). Fuel cells can be used in aviation in many areas. Common to all applications is operation at high altitudes, at low pressure and low outside temperatures. The safety requirements and reliability must meet very high standards.