Hydrogen is produced with Biomass, being itself a renewable energy. In effect, the plants that are the source of biomass for energy capture the CO2 which then may be released.
In addition, with Hynoca, approximately half of the carbon is captured with the biochar, which makes it more than a renewable energy process. For each kilo of hydrogen produced, Hynoca allows to remove around 16 kg of CO2 from the atmosphere.
To give a simple illustration, an hydrogen powered car with hydrogen produced by an HYNOCA station would allow to nullify the CO2 emissions of a family combustion engine car.