[Class : 37] Installation, Maintenance And Repair Of Solar Installations For Generating Power, Solar Collectors And Photovoltaic Modules Installation And Maintenance Of Photovoltaic Installations; Installation And Maintenance Of Solar Thermal Installations; Installation, Maintenance And Repair Of Solar Energy Systems; Installation, Maintenance And Repair Of Inverters, Batteries And Electrical Connection Apparatus For Solar Energy Systems; Installation Of Energy Saving Apparatus; Construction Of Energy Efficient Buildings And Structures.