9 Apparatus and instruments for controlling electricity for use in electronic systems comprising photovoltaic modules; photovoltaic modules; photovoltaic cells; Solar panels for production of electricity; Electric and electronic components in the nature of components for use in devices comprising photovoltaic modules; electric and electronic circuits; electrical conductors; apparatus and instruments for conducting the distribution of electricity; apparatus and instruments for accumulating and storing electricity; solar batteries; solar panels for the production of electricity; electric power distribution units; Chargers for electronic devices and portable electronic devices; battery chargers; wireless chargers; Printers for use in manufacturing of printed electronic devices; thermal printers; Matrix printers for use in manufacturing of printed electronic devices; Laser beam printers for use in manufacturing of printed electronic devices; Information technology equipment in the nature of computer software, computer hardware and IoT devices; Audiovisual equipment in the nature of audiovisual electronic shelf labels; Audiovisual devices in the nature of audiovisual electronic shelf labels; Electronic tags in the nature of electronic price tags; electronic tags for goods; electronic collars to train animals; electronic interactive whiteboards; electronic scoreboards; photoelectric sensors; alarm sensors; electric sensors; electronic apparatus, namely, electronic display boards, plasma display boards, electronic display screens; Data storage devices and media in the nature of computer data storage devices and media for memory storage in IoT devices; Measuring devices in the nature of electronic devices for measuring electric current; Detecting devices in the nature of electronic devices for detecting electromagnetic radiation; Monitoring devices in the nature of electronic devices for monitoring a photovoltaic performance; Controlling devices in the nature of electric control units for power management; charging stations for electric vehicles; electronic semi-conductors; computer hardware and recorded software systems for the transmission of data between the internet of things (IoT) devices and external server; computer hardware with preinstalled software for remotely controlling, managing, updating the internet of things (IoT) devices; downloadable software for connecting, operating, and managing networked electronic shelf labels in the internet of things (IoT); recorded software for connecting, operating, and managing networked electronic shelf labels in the internet of things (IoT); recorded software for controlling, managing, updating data displayed on the displays of the internet of things (IoT) devices; recorded software used for controlling and managing the operation of photovoltaic devices; recorded software in wirelessly connected IoT devices used for communication, data transfer, power management, energy consumption optimalization; recorded software used for price optimalization and displaying updated price on electronic shelf labels; recorded computer software for database management; recorded computer software and hardware for use in energy management sold as a unit; downloadable computer software for collecting, analyzing and organizing data in the field of energy