installation of solar panels; installation of solar heating systems; installation, maintenance and repair of solar energy systems; construction of solar power plants; maintenance and repair of solar-powered heating apparatus; maintenance and repair of solar-powered heating appliances; solar heating installation maintenance and repair; installation, maintenance and repair of solar installations for generating power; installation and maintenance of solar thermal installations; installation, maintenance and repair of solar collectors; solar heating installation maintenance and repair services; maintenance and repair of solar heating installations; installation, maintenance and repair of solar installations for generating power, solar collectors and photovoltaic modules; installation, maintenance and repair of boiler systems and solar energy systems; installation, maintenance and repair of inverters, batteries and electrical connection apparatus for solar energy systems; battery charging services for motor vehicles; vehicle battery charging; charging of vehicle batteries; vehicle battery charging services; charging of batteries and power storage devices, and rental of equipment thereof; installation, maintenance and repair of batteries and accumulators