Installation of apparatus for generating power; Repair or maintenance of power distribution or control machines and apparatus; Providing technical support, namely, technical advice concerning the installation, repair and maintenance of electric or electronic apparatus, equipment and devices used for automated or partly automated industrial operations; Installation, maintenance and repair of computer hardware; Charging of electric vehicles; Battery charging services for motor vehicles; Rental of portable power chargers; Repair or maintenance of chemical processing machines and apparatus; Installation and maintenance of photovoltaic installations; Repair of power lines; Fueling of hydrogen gas for vehicles; Installation, maintenance and repair of apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity; Installation and maintenance of electronic apparatus; Installation, maintenance and repair of lighting apparatus; Installation and repair of air conditioning apparatus; Air conditioning vent sealing services; Installation and repair of electrical appliances; Repair or maintenance of power generators; Installation of power generating apparatus; Repair or maintenance of integrated circuits manufacturing machines and systems; Maintenance and repair of electric vehicles; Rental of battery chargers; Rental of portable battery chargers for electric cars; Installation of electrical wiring; Plant construction, maintenance and construction project management services for businesses in the energy production and transmission sector; Vehicle battery charging