© Alléo Energy
Alléo Energy, an Alabama-based start-up, has unveiled a proprietary process to produce hydrogen from wood and cellulosic waste, which it says can deliver carbon-negative fuel at lower costs than conventional electrolysis.
Commercial-scale operations in alabama
The company has built a commercial-scale reactor that converts one tonne of cellulosic waste into more than 100 kilograms of hydrogen while sequestering six kilograms of carbon dioxide for every kilogram of hydrogen produced. The process, first demonstrated in 2023 and expanded with a second reactor commissioned in early 2025, has run at nameplate yields under multi-day continuous operations, according to the company.
Efficiency compared with electrolysis
Alléo positions its technology as more energy efficient than water electrolysis, which typically consumes 55–60 kWh per kilogram of hydrogen. The firm says its system requires less than 20 kWh/kg, or about 63 per cent of the benchmark power requirement, enabling production costs “well below competing initiatives”.
Plans to enter transportation market
Chief executive Simeon Chow said the company expects to begin hydrogen sales into the transportation sector from its Bay Minette site “in a few short months”. He added that the process “doesn’t require subsidies to be profitable”. The company also plans to scale operations internationally after demonstrating viability in Alabama.
Biochar by-product applications
Alongside hydrogen, the process yields a biochar by-product containing more than 94 per cent graphitic carbon. Alléo says this can be upgraded into graphene or used in steelmaking, batteries and soil enhancement. Because the carbon absorbed during tree growth is locked in solid form rather than released as CO₂, the company argues the hydrogen qualifies as carbon-negative.
Implications for investors and policy
If Alléo’s claims of higher efficiency and negative carbon intensity prove commercially sustainable, the process could appeal to investors and policymakers under pressure to decarbonise heavy transport while managing hydrogen costs. However, limited technical disclosure means independent verification will be critical before the technology can be widely adopted.
