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SuperStack Flex

ZeroAvia
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Fuel cells
Fuel-cell system
Configurable low-temperature PEM system for aviation power generation.
Supplier-listed; configuration and current availability require confirmation.

Specifications and conditions

In March 2025 ZeroAvia reported a 150 kW net-power demonstration and over 1.0 kW/kg net system specific power including thermal management. These are for the tested configuration, not all variants.

Aircraft applications

The supplier describes aviation or aircraft-system uses; an exact aircraft installation has not been independently verified.

Certification

No regulator-issued approval has been verified for this specific product and configuration. Test milestones, design targets and organisational approvals are separate from a product certificate.

Sources

ZeroAvia: SuperStack Flex source, 2025-03-11; checked 28 October 2026.

Last verified

October 28, 2026