4
Electricity; electric energy; solar energy
7
Photovoltaic systems (machinery, enginery, machinery parts); thermal solar systems (machines for transformation of solar energy to thermal energy); hydrogen electrolysis equipment
9
Current distributors; distribution boxes (electricity); distribution boards (electricity); distribution cabinets, consoles, boards (electricity); solar panels; solar cells; distribution system cables; meters (electricity) and electric measuring devices; measuring tools; electric cells; electric connection equipment; electric collectors; electric fuses; electric connectors; electric switch panels; electric indicators (electricity meters etc); appliances to determine defects in electricity conduits; electricity conduits, including cables for conducting electricity; electric conductors; electric discharge tubes; insulated electric wires; voltage and current converters; electric leads; electric appliances included in this class; technical measuring appliances (measurers); control equipment for the operation of energy facilities; transformer stations; junction boxes and household circuit breaking boxes; electricity meters; batteries; photovoltaic systems (apparatus, instruments and their parts); electricity and energy storage units
11
Heat storage (accumulative) appliances
35
Provision of services related to the supply, consumption or use of electricity, as eg statement of account for supply, consumption and use of electricity
37
Construction, alterations and demolition of structures; construction, installation, repair and maintenance of energy equipment; construction of energy facilities; structural engineering; installation and repair of electric machinery and apparatus and equipment; repair and installation of measuring and control technology; repair and installation of meters; testing of electrical equipment and pressure equipment; installation, repair, maintenance of dedicated electrical equipment; installation and repair of electric appliances; electrical wiring and fitting work; inspection of electrical equipment; modernization of energy equipment dispatch control technology
39
Transport and storage, in particular of electricity; distribution and supply of energy - electricity, thermal energy, including control of the distribution grid; distribution and take-off of electricity
40
Electricity power stations and its operation; electric power generation, production of energy, including solar energy; operation of solar equipment on roofs (including the roofs of others); solar panel rental; operating power-plants and energy-generating installations in connection of production of electricity and heat; rental of electric appliances and equipment as rental of thermal solar systems, solar panels, thermal solar systems and other energy-generating installations; consultancy and technical services on field generation of energy
42
Engineering, project studies and design and construction in the field of energy and heating; electrical engineering; design of photovoltaic systems and thermal solar systems; author supervision; technical consultancy in the field of energy; design of electric and electronic equipment; product quality control and assurance – electric distribution equipment and protection and work aids for such equipment; rental of electronic appliances and equipment, measuring and control technology; consultancy and technical services on field of management of generation of energy; research and development; control activity - monitoring and reporting of capacity, states, failures and required information, critical events reporting provided by dispatch control and telecommunication technology equipment and technical devices to control electricity consumption