Scope
The standard L.1333 defines a key performance indicator (KPI) called network carbon intensity energy (NCIe) and elaborates on ways to calculate it for different types of networks, such as public telecom network (PTN), non-public network (NPN) and enterprise network. The standard only considers the network operation phase and the energy efficiency metric defined in Recommendation ITU-T L.1331.
Summary
The NCIe KPI is calculated as the product of the total energy consumption of the network and the emission factor of the energy source, divided by the total data traffic of the network. The emission factor reflects the carbon intensity of different energy sources, such as grid electricity, backup energy and locally generated energy. The total data traffic is measured at the aggregated point of the user interface. The KPI can be derived from the mobile network data-energy efficiency (EEMN,DV) defined in Recommendation ITU-T L.1331 or ETSI ES 203 228.
The emission factor (EF) (kg CO2e/kWh) is the emission factor represented by the mass of carbon emitted per kWh of electricity.
The document also provides a summary of the ITU-T L-series Recommendations, which cover topics such as optical fiber cables, optical infrastructures, maintenance and operation, passive optical devices, e-waste and circular economy, power feeding and energy storage, energy efficiency, smart energy and green data centers, assessment methodologies of ICTs and CO2 trajectories, adaptation to climate change, circular and sustainable cities and communities, and low-cost sustainable infrastructure.
Relevance for EXIGENCE
The metric for carbon intensity energy (NCIe) is relevant for requirements and scenarios; energy metrics and energy measurements; and orchestration.
