services of electricians; electric appliance installation; electric appliance repair; electric appliance installation and repair; electric apparatus installation; installation of electrical apparatus; electric apparatus repair; repair or maintenance of electric lighting apparatus and providing information relating thereto; installation, maintenance and repair of electrical lighting apparatus; repair or maintenance of electric cooking apparatus and installations; electrical wiring services; repair of electrical equipment and electrotechnical installations; electrical equipment repair; providing information relating to the installation of electrical apparatus; installation of solar panels; installation of solar heating systems; installation, maintenance and repair of solar energy systems; solar heating installation maintenance and repair services; installation, maintenance and repair of solar collectors; maintenance and repair of solar-powered heating apparatus; maintenance and repair of solar heating installations; maintenance and repair of solar-powered heating appliances; installation, maintenance and repair of boiler systems and solar energy systems; installation of apparatus and devices for power generation; installation of apparatus for generating power; installation, maintenance and repair of solar installations for generating power; repair of apparatus and installations for generating power; repair of apparatus and installations for power generation; installation, maintenance and repair of inverters, batteries and electrical connection apparatus for solar energy systems