The article discusses the significance of hydrogen system testbeds powered by renewables, ranging from kilowatt to megawatt scale, in mitigating technical and financial risks. By providing concrete evidence to assess the economic viability of investments at a commercial scale, these testbeds play a crucial role in shaping sustainable international hydrogen value chains. Future-proofing these testbeds for seamless integration of new components and technologies is highlighted as a strategy to accelerate the uptake of innovation with minimum regrets. The content emphasizes the importance of accelerating the commercial deployment of hydrogen technologies through these testbeds to drive the transition towards sustainable energy systems. The authors, affiliated with the Centre for Hydrogen and Renewable Energy in Central Queensland University and other institutions in Australia and the UK, are actively engaged in hydrogen testbed research. Their involvement in pilot plant installations and leading projects on hybrid renewable hydrogen production illustrates a strong commitment to advancing renewable hydrogen technologies. The article underscores the positive role that testbeds play in facilitating research and development to achieve efficient, reliable, and scalable hydrogen production. Furthermore, the article acknowledges the contributions of various international organizations and initiatives in the field of hydrogen research, including the International Energy Agency, Hydrogen Council, McKinsey and Company, and the Department of Climate Change, Energy, the Environment and Water. By citing key references and acknowledging the role of different stakeholders, the article provides a comprehensive overview of the current landscape of hydrogen testbed research and its implications for the future of sustainable energy systems.