Providing online non-downloadable software for managing and tracking energy use and carbon emission of buildings; Providing online non-downloadable software for managing and tracking energy use, carbon emission, fuel switching and decarbonization of buildings; Providing online non-downloadable software for program and project management in the field of energy use and carbon emission of buildings; Providing online non-downloadable software for program and project management in the field of design, construction, and maintenance of buildings; Providing online non-downloadable software for contact management, workflow management, milestone tracking, and automated report generation in the field of energy use and carbon emission of buildings; Providing online non-downloadable software for contact management, workflow management, milestone tracking, and automated report generation in the field of design, construction, and maintenance of buildings; Software as a service (SAAS) services featuring software for managing and tracking energy use and carbon emission of buildings; Software as a service (SAAS) services featuring software for managing and tracking energy use, carbon emission, fuel switching and decarbonization of buildings; Software as a service (SAAS) services featuring software for program and project management in the field of energy use and carbon emission of buildings; Software as a service (SAAS) services featuring software for program and project management in the field of design, construction, and maintenance of buildings; Software as a service (SAAS) services featuring software for contact management, workflow management, milestone tracking, and automated report generation in the field of energy use and carbon emission of buildings; Software as a service (SAAS) services featuring for contact management, workflow management, milestone tracking, and automated report generation in the field of design, construction, and maintenance of buildings; Platform as a service (PAAS) featuring computer software platforms for managing and tracking energy use and carbon emission of buildings; Platform as a service (PAAS) featuring computer software platforms for managing and tracking energy use, carbon emission, fuel switching and decarbonization of buildings; Platform as a service (PAAS) featuring computer software platforms for program and project management in the field of energy use and carbon emission of buildings; Platform as a service (PAAS) featuring computer software platforms for program and project management in the field of design, construction, and maintenance of buildings; Platform as a service (PAAS) featuring computer software platforms for contact management, workflow management, milestone tracking, and automated report generation in the field of energy use and carbon emission of buildings; Platform as a service (PAAS) featuring computer software platforms for contact management, workflow management, milestone tracking, and automated report generation in the field of design, construction, and maintenance of buildings