[Class : 35] Business Consultancy, Including Professional Business Consultancy, In The Field Of Environmental Technology, Energy Marketing; Development, Implementation And Marketing Of Environmental Marketing Strategies For Others; Marketing Of Energy Saving Concepts And Products, For Others; Marketing Of Projects In The Field Of Renewable Energy, For Others; Professional Business Planning And Consultancy In The Field Of Energy Generating Installations[Class : 37] Assembly And Installation Of Energy Generating Installations, In Particular Photovoltaic And Solar Installations; Maintenance And Repair Of Energy Generating Installations, In Particular Photovoltaic And Solar Installations; Building Construction, In Particular Services In The Field Of The Construction Of Energy Generating Installations[Class : 42] Technical Design Of Energy Generating Installations, In Particular Photovoltaic And Solar Installations; Technical Consultancy With Regard To The Use Of Photovoltaic And Solar Installations And Of Power Stations; Technical Expertise And Consultancy; Geological Calculations For The Extraction Of Natural Resources For The Production Of Energy And Energy Products; Technical Reports And Projects And Product Development Within The Power And Energy Sectors; Development Of Energy Saving Concepts And Products, For Others; Development Of Projects In The Field Of Renewable Energy, For Others