Computers; Microprocessors; Electrical transformers; Reactive power compensators; Electric capacitors, reactors, converters, and inverters; Electricity usage meters; Electrical measuring instruments, namely operating time meters, for recording and measuring electric current and voltage; Control and protective equipment for power grids, namely voltage surge protectors, fire alarms, anti-intrusion alarms, theft alarms, personal security alarms, and emergency warning lamps; Batteries; Solar panels; Voltage regulators; Scientific, surveying, measuring, signaling, checking, life-saving, and teaching apparatus and instruments.; Cables, conductors, and wires; Switchgears; Circuit breakers; Relays; Semiconductor Devices; Surge arrestors; Power generation, transmission, and distribution; Computer software programs for power plants, industrial plants, buildings, and grids control in power and energy systems; Cable bushings for use in circuit breakers and transformers; Power generators and motors