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Construction, repair, dismantling and maintenance of power plants and power lines; installation, repair and maintenance of solar powered systems; servicing of power generating apparatus and installations; installation, repair and maintenance of energy-saving apparatus; installation, repair and maintenance of energy supply installations; construction of wave energy power plants; installation, repair and maintenance of energy generating installations; installation, repair and maintenance of energy production plants and machines; construction, maintenance, servicing and repair of gas and electricity generating plants; electrical wiring services; installation, repair and maintenance of goods relating to the distribution, selling and generation of energy; installation, maintenance, repair and servicing of buildings, gas and electric appliances, meters, pipes and pipe works and transmission lines; installation, maintenance, repair and servicing of apparatus and instruments using gas or electricity; installation, repair and maintenance of goods relating to the distribution, supply, selling and generation of energy; installation, repair and maintenance of meters; installation, repair and maintenance of utilities in buildings, pipes, appliances, and meters; installation, repair and maintenance services relating to electric vehicle chargers and electric vehicle charging points and stations; installation, maintenance and repair of apparatus for heating, lighting, sanitation, ventilation, air conditioning and water supply; central heating installation; installation of heating control apparatus; installation, maintenance and repair of computer hardware, household automated devices, including multiple automated devices that are networked or otherwise integrated together to create a home environment that can be easily controlled, home electrical systems and surveillance and security systems in homes; installation, maintenance, updating and repair of computer systems; installation, integration, repair, maintenance, upgrading, operation and optimisation of computers, computer hardware, electrical and electronic equipment and apparatus, energy generation and storage equipment, monitoring equipment, smart meters and devices, dynamos, heating, cooling, air conditioning and ventilation apparatus, installations, appliances and systems, metering equipment, power systems, security systems, smoke alarms and fire alarms; installation, integration, repair, maintenance, upgrading, operation and optimisation of electric battery systems for the storage, discharge, supply, transmission and stabilisation of electricity; maintenance of household technology systems, devices and apparatus, namely, boilers, heating installations; insulation of existing buildings; maintenance and repair of computer hardware, servers, systems and routers; information, advisory and consultancy services in relation to all the aforesaid; all of the aforementioned relating to energy generation and distribution systems, including but not limited to power plants, solar-powered systems, energy-saving apparatus, energy supply installations, and gas and electricity generating plants