Voluntary schemes and national certification schemes within the EU play a crucial role in setting standards for the production of sustainable fuels and gases, which now include hydrogen. These schemes ensure that biofuels, bioliquids, biomass fuels, renewable hydrogen, and recycled carbon fuels are produced sustainably by verifying compliance with EU sustainability criteria. Key factors verified include the origin of feedstock to avoid high biodiversity areas, the use of renewable electricity for renewable hydrogen production, and achieving significant greenhouse gas emissions savings. Moreover, these schemes assess additional sustainability aspects such as soil, water, air protection, and social criteria. The certification process involves external auditors examining the entire production chain from raw material and energy sources to fuel producers or traders. While privately operated, these schemes can be recognized as compliant with EU rules by the European Commission. The EU sustainability criteria, outlined in the Implementing Regulation on sustainability certification, cover fuels and energy production from agricultural, forest biomass, and organic waste. Recent delegated acts by the European Commission extend this framework to ensure the sustainability of renewable hydrogen and its derivatives, including criteria for sourcing renewable electricity and determining emission savings. Interested schemes can seek recognition under the sustainability framework, subject to assessment by the Commission based on specific criteria. To be recognized, schemes must ensure feedstock producers meet sustainability and production criteria, have well-documented sustainability information, conduct regular audits, and employ auditors with the necessary skills. Ultimately, the decision to recognize a voluntary scheme typically carries a 5-year validity period, highlighting the commitment to promoting sustainability within the production of renewable fuels and gases, including the growing significance of hydrogen.