Abstract The global shift toward renewable energy sources is accelerating, driven by the urgent need to mitigate climate change, enhance energy security, and foster sustainable economic growth. This paper examines the transitions in solar, wind, and hydrogen energy technologies, highlighting their roles in decarbonizing power generation, industry, and transport. Drawing on recent data from the International Energy Agency (IEA) and the International Renewable Energy Agency (IRENA), we analyze capacity growth, technological advancements, and integration challenges up to 2025. Solar photovoltaic (PV) and wind power have seen record expansions, with global renewable capacity reaching 4,448 GW in 2024, led by solar's 35% growth. Hydrogen emerges as a complementary solution for hard-to-abate sectors, with green hydrogen production projected to surge due to falling electrolysis costs. However, barriers such as grid intermittency, supply chain vulnerabilities, and policy inconsistencies persist. Through a mixed-methods approach combining statistical analysis and case studies, this study identifies opportunities for hybrid systems and international collaboration. Findings underscore that achieving net-zero by 2050 requires tripling renewable capacity by 2030, with solar and wind providing 95% of growth, while hydrogen could meet 10-20% of energy needs in key industries. Policy recommendations include enhanced incentives and infrastructure investments to overcome hurdles and realize the full potential of these technologies. This transition not only promises reduced emissions but also economic benefits, including millions of jobs and energy independence for nations worldwide. By integrating these technologies, the world can pave the way for a resilient, low-carbon future