This volume comprises the proceedings of the International Conference on Renewable Energy and Sustainable Technologies (ICREST 2024). It presents a curated collection of cutting‑edge research and innovative developments in areas such as energy‑efficiency enhancement, conservation strategies, environmental impact assessment, policy frameworks, and emerging trends in renewable energy and sustainability. The book offers a broad spectrum of scholarly contributions, covering topics such as evolving renewable energy technologies—such as solar, wind, hydroelectric, biomass, and geothermal systems—as well as sustainable practices and technological interventions across key sectors including agriculture, transportation, manufacturing, and construction. The book serves as a valuable resource for policymakers, industry stakeholders, researchers, academicians, and environmentally conscious readers.