The 4th ODICON-2026 aims to foster innovation and research in diverse fields including renewable energy sources, power and energy systems, signal processing, communication technologies, artificial intelligence (AI), machine learning (ML), advanced computing techniques, optimal control strategies, and electric vehicles. This conference serves as a platform for academicians, researchers, and industry professionals to exchange cutting-edge ideas and advancements that contribute to sustainable development and technological progress. ODICON-2025 seeks to bridge gaps between theory and practice, addressing critical challenges and emerging trends across multidisciplinary domains.