Hydrogen is expected to be a key part of our green energy transition. But we have used hydrogen for over 100 years. Why is there hype around hydrogen now? Are the hopes warranted? What is required to make the hydrogen economy a reality? In the Hydrogen Valley Podcast, Mikko Heiskala, a visiting researcher at the Department of Industrial Engineering at Aalto University interviews researchers and industry experts from the BalticSeaH2 Hydrogen Valley, the European H2 Valley of the Year 2025 to understand what the hydrogen economy is about, its components, and what is needed to make it a reality.