As the global aviation industry propels towards sustainability, Stellar Aircraft is leading the charge with its groundbreaking solid state hydrogen battery technology, a transformative leap in hydrogen storage systems utilising metal hydrides to offer a safe, efficient and dense energy solution.

Unlike traditional methods that store hydrogen as gas or liquid, this system employs metal hydrides to absorb and release hydrogen in a solid form. This significantly enhances safety and compactness, making it an ideal fit for the StellarJet aviation system, which benefits from enhanced flight efficiency and sustainability.

Liquid hydrogen (LH₂) has long been considered the standard for efficient storage but comes with notable drawbacks: extreme storage conditions requiring complex cryogenic infrastructure; daily evaporation losses; weight issues from insulation and tanks; and significant explosion risks. Stellar’s technology overcomes these limitations with unmatched safety, higher storage efficiency, and the elimination of costly cooling requirements, allowing hydrogen to be stored and used without the hazards associated with LH₂.

Metal hydrides are advanced alloys capable of safely storing and efficiently utilising hydrogen, recognised for their excellent energy density and robustness. Stellar’s solid-state technology not only provides substantial safety and efficiency improvements but is also lightweight and compact, enhancing its utility in aerospace applications. The systems are durable, handling 1,000+ refuelling cycles without efficiency loss, and operate under a broad pressure range (six to 700 bar), enabling versatile uses across industries.

Stellar Aircraft’s leadership in hydrogen technology aligns with robust growth projections for the global hydrogen market, which was valued at $183 billion in 2022 and is expected to expand at a 5.5 per cent CAGR from 2023 to 2032. The hydrogen hubs market and the liquid hydrogen market forecast significant expansion.

Beginning 1 April, 2025 Stellar will open pre-orders for its solid-state H₂ storage system, with full-scale commercial deployment anticipated within six to 12 months. This launch represents the initial phase of operational use across multiple industries worldwide. Stellar’s technology not only meets the surging demand for efficient storage solutions but also advances the entire ecosystem.