Ukraine's energy sector has been deeply impacted by the full-scale invasion by the Russian Federation, leading to a shift in the power sector from surplus to deficit due to attacks on infrastructure. This shift has raised concerns about energy security and the reliability of energy supply in the country. The demand for hydrogen, particularly in traditional sectors like refining and ammonia production, has dropped significantly, with many assets located in areas affected by the conflict. The overall economic damage from the war has been substantial, with reconstruction costs estimated to surpass USD 0.5 trillion, posing a significant challenge to Ukraine's GDP. However, amidst the destruction, there lies an opportunity for rebuilding a more sustainable energy system. By focusing on the use of low-emissions hydrogen in industrial applications, Ukraine can not only reduce its greenhouse gas emissions but also foster the development of an export-oriented industrial sector that could contribute to economic recovery. The report emphasizes the need to act across four key pillars - physical assets, regulation, financing, and cross-cutting areas - over various timeframes ranging from 2 to 20 years. These actions are crucial in laying the foundation for a future hydrogen industry that aligns with sustainability goals. While the journey towards establishing a robust renewable hydrogen sector will be gradual, starting the efforts now is vital to accumulate the necessary expertise and experience for its success in the long run.