National

Political and economic union of European states; sets climate, energy, trade and external funding policies, including the Global Gateway and hydrogen import strategy.

National policymaking, infrastructure development, renewable energy transformation

Hydrogen produced from renewable electricity sources, considered a critical component for hydrogen's long-term credibility as a clean fuel.

ZeroAvia's zero-emission powertrains use hydrogen fuel cells that generate electricity through chemical reactions to power electric motors for aircraft propulsion.

Hydrogen derived from natural gas with carbon capture technology, debated as a potential stepping stone or greenwashing.