heating apparatus installation; solar heating installation maintenance and repair; electric appliance installation; vehicle battery charging; solar heating installation maintenance and repair services; electric vehicle charging; heating equipment installation; electric apparatus installation; installation of solar panels; construction services; building construction; maintenance and repair; installation and maintenance of photovoltaic installations; installation, maintenance and repair of inverters, batteries and electrical connection apparatus for solar energy systems; electrical installation services; installation, maintenance and repair of solar installations for generating power; installation, maintenance and repair of solar installations for generating power, solar collectors and photovoltaic modules; installation, maintenance and repair of solar energy systems; lighting system installation; installation of solar heating systems; installation and maintenance of solar thermal installations