<p>The increasing need for decentralized and sustainable energy sources has fueled interest in biochar, a high-carbon-content material obtained from biomass pyrolysis or gasification, as a viable option for bioelectricity production. Considering its tunable porosity, high carbon content, and natural electrical conductivity, biochar presents an unprecedented platform for transforming biomass waste into useful energy. Biochar to bioelectricity conversion contributes not only to renewable energy targets but also to carbon sequestration and waste valorization. The review presents a bibliometric analysis of biochar to bioelectricity, as well as its applications. The study systematically examines biochar conversion technologies such as pyrolysis, gasification, torrefaction, and their applications in electrical energy systems. Further, it discusses a performance-enhancing modification, techno-economic evaluation, technology readiness level (TRL), future perspectives, and challenges. The present study emphasizes the revolutionary contribution of biochar to a sustainable energy future through the rapid implementation of biochar-driven energy solutions, which significantly support sustainable development goals (SDGs) 7 and 13.</p> Graphical Abstract <p></p>