The concept of hydrogen-powered jets remains in its developmental stages and has yet to materialise as a viable option for travelers. Aviation, responsible for over 2% of global carbon dioxide emissions, particularly highlights the carbon intensity of private jets, which emit significantly more pollution per passenger compared to commercial flights or trains. While some private jet users resort to carbon offsets, several startups propose hydrogen-powered aircraft as an alternative. Hydrogen, capable of replacing fossil fuels without emitting carbon dioxide, holds promise for cleaner aviation. However, its efficacy is yet to be validated, prompting debates on whether its adoption in private aviation serves as a climate solution or a risky venture for the affluent.

For now, the prospect of flying on hydrogen-powered jets remains theoretical. French startup Beyond Aero aims to launch a six-seat hydrogen jet by 2030, having garnered interest from prospective buyers and airlines. Similarly, Switzerland-based Sirius Aviation AG is developing hydrogen-powered private jets, receiving prepayments from affluent individuals for yet-to-be-built aircraft. These initiatives seek to address environmental concerns associated with air travel, potentially alleviating "flight shame" among eco-conscious travellers.

Hydrogen, being the most abundant element in the universe, presents opportunities for various applications, including aviation. However, its extraction and utilisation entail challenges.

While the industry transitions towards producing more "green hydrogen" from renewable sources, its current output remains minimal. Nonetheless, hydrogen holds promise for sectors requiring intense heat, although its use in private aviation raises questions about prioritisation.

Although airlines explore alternative fuels and battery-powered planes, hydrogen-powered aircraft could play a significant role, potentially serving a third of passenger aviation traffic by 2050. However, several obstacles must be overcome, including technological advancements, regulatory approvals, the scalability of green hydrogen production, infrastructure development, and cost-effectiveness.

Despite the optimism surrounding hydrogen-powered aviation, uncertainties persist. Drawing parallels to the evolution of electric vehicles, proponents anticipate advancements in technology and cost reductions over time. Both Sirius Aviation and Beyond Aero aim to expand their offerings to include larger commercial aircraft as technology matures.

Nonetheless, the track record of hydrogen cars serves as a cautionary tale, illustrating the challenges of challenging existing norms and competing with alternative green technologies. In the interim, adopting lower-emission travel options could mitigate carbon footprints, as demonstrated by the shift towards more sustainable transportation choices by entities like Futbol Club Barcelona and initiatives such as those led by celebrities like Billie Eilish.