42 Design, development and programming of computer software and computer software applications for controlling energy systems; design, development and programming of energy management computer software and computer software applications; design, development and programming of computer software and computer software applications for controlling energy management systems; design, development and programming of computer software and computer software applications in the field of energy; rental of computer software and computer software applications in the field of energy; installation and maintenance of computer software and computer software applications in the field of energy; custom design of computer software and computer software applications in the field of energy; monitoring of computer systems for others for regulating energy; monitoring of computer systems for others for regulating energy by remote access; recording data for others on optical, digital, and magnetic media for electronic storage relating to energy consumption in buildings; consulting services in the field of energy measurement to improve energy efficiency; providing technical analysis relating to scientific research in the fields of energy supply, energy generation, and the energy consumption by others; providing technological consulting services in the field of energy generation and energy consumption; technological consulting services in the field of energy supply; technological advisory services in the field of energy; technological consultancy in the field of energy-saving, use of energy and energy efficiency; technological consultancy related to technical examination of the efficiency of energy consumption; energy auditing; testing, analysis, and evaluation of the goods and services of others to determine conformity with certification standards related to the energy efficiency of buildings; providing technological advice relating to the engineering of energy systems; conducting feasibility studies in the field of new technologies in the field of energy; technological analysis services in the field of engineering of goods in the energy field; technological consultancy services, namely, computer programming services online in the field of energy; planning, design, development and maintenance of online websites for others in the field of energy; maintenance of websites and hosting online web facilities for others in the field of energy; software as a service (SaaS) services, namely, hosting computer software applications of others in the field of energy for use in database management; programming, maintenance and provision of online, non-downloadable software for use in database management via a worldwide computer network in the field of energy, used by others; programming, maintenance and provision of online, non-downloadable software and computer software applications, both for e-commerce platforms for providing user authentication using single sign-in technology for e-commerce transactions in the field of energy, used by others; computer consultancy services, namely, development of computer software and computer software applications for use in the field of energy; providing temporary use of online, non-downloadable computer software for tracking packages over computer networks, intranets and the Internet in the field of energy; hosting computer server platforms and portals in the field of energy; hosting platforms on the Internet in the nature of computer servers in the field of energy; hosting of servers featuring computerized data, files, applications and information in the field of energy; encryption, decryption and authentication of information, messages and data in the field of energy; cross-platform conversion of digital content into other forms of digital content; data warehousing in the field of energy; data conversion of electronic information in the field of energy; maintenance of software for data bases in the field of energy; engineering services relating to energy supply systems; engineering services in the field of energy technology; scientific research in the field of energy; technology supervision in the field of energy management systems and the management of energy flows; technology supervision related to the operation of compute-based energy management systems and the energy flows resulting therefrom; conversion of computer programs and data in the energy sector, excluding physical conversion; hosting and maintenance of websites for third parties for memory space in the field of energy; hosting of website memory space for others on the Internet in the field of energy; provision of online, non-downloadable evaluation software online for controlling a measuring apparatus for tracking energy consumption and for evaluating energy consumption