The urgent challenge of climate change necessitates immediate reductions in carbon emissions, prompting a global transformation of energy systems. Although solar and wind power are rapidly expanding, their intermittent nature limits their applicability in energy-intensive and hard-to-electrify industries. The current mini-review presents an extensive review of green hydrogen- circulated via electrolysis by renewable energy sources- as the key road to achieving a net-zero emissions position. It integrates techno-economic comparisons, sector-specific applications, and socio-political considerations to assess the viability of green hydrogen. Drawing on 50 authoritative sources (2015–2025), the review contrasts green hydrogen with grey and blue hydrogen, as well as battery storage, by analyzing costs, efficiency, and lifecycle emissions. The study examines production technologies, storage solutions, and market challenges while also addressing public acceptance and policy frameworks. By integrating technical data with real-world case studies and international policy approaches, this work underscores green hydrogen as not merely a sustainable fuel alternative but a crucial component of global decarbonization. Successful implementation will depend on synchronized advancements in technology, infrastructure, and governance.