Electrical cables, optical cables, optical fibers, electrical terminations, transformers, industrial plants in the form of distribution stations, switching stations, main grids and grid stations for the distribution of electricity including electricity distribution nets; apparatus and instruments for supervision, remote control, checking and measuring of electricity and energy consumption and for automatic operation of power plants; electrical connectors, poles and transformers for the distribution of electricity and energy; data processing equipment and recorded computer programs to be used in the production, distribution and control of energy and electricity; solar cells and solar batteries for the generation of electricity and energy; land surveying instruments; detectors and alarm devices for industrial purposes and for use in energy production and distribution