Cutting-edge innovations and strategies in sustainable energy systems: Paving the way for a greener future

The global disruptions caused by the COVID-19 pandemic have brought to light the vulnera-bilities of urban areas, particularly their dependence on global supply chains for essential resources like energy, food, and water. These interruptions have highlighted the urgent need for local solutions that can safeguard the availability of such critical supplies. Moreover, the pandemic has underscored the public health risks associated with both outdoor and indoor pollution, which have been shown to worsen the spread and impact of the virus. In re-sponse, many countries are shifting focus towards policies that promote sustainable energy solutions, particularly those that emphasize the electrification of systems powered by re-newable energy sources, as outlined by the International Energy Agency. While efforts to develop a COVID-19 vaccine remain a top priority, there is an increasing recognition of the necessity for innovative strategies that integrate renewable energy technologies, policy frameworks, and management practices to drive long-term recovery. This study aims to explore vital topics such as energy policy, biomass energy, energy-efficient buildings, and sustainable power systems. This review captures the insights advancing the conversation on sustainable energy and the transition to renewable systems.