The following six books are reviewed: Gas Insulated Substations, 2nd Edition (Koch, H.J; 2022; Digital Twin Driven Service (Tao, F., et al; 2022); Space Micropropulsion for Nanosatellites—Progress, Challenges and Future (Cheah, K.H.; Bismuth-Based Materials Environmental Remediation (Nayak, A.K.;2022); Technologies Integrated Energy Systems Networks (Graditi, G. Di Somma, M.;2022); Essentials o...