The Corona Virus Disease 2019 (COVID-19) epidemic has deferred global progress in energy efficiency to a decade-long low. posing a threat to the achievement of international climate goals. and also profoundly affected the development of economics. To gain insight into the research frontiers and hotspots in energy efficiency and COVID-19. https://allfixelectricales.shop/product-category/universal-laptop-car-charger-power-adaptor/