Electricity metering and backup power supply for multi-storey buildingsAktam Denmukhammadiev, Almardon Mustafoqulov, Himalokhon Valikhonova, Erkin Sobirov and Тemur RaimovE3S Web Conf., 264 (2021) 05051DOI: https://doi.org/10.1051/e3sconf/202126405051