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ITU-T Recommendations

Green ICT Standards and Supplements

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Rec. No.TitleSummaryStatusApproval Date
L.1306 Specification of Edge Data Centre infrastructureThis Recommendation makes systematic requirements on infrastructure including ICT equipment, power feeding system, cooling system, monitoring system, etc. to get green, safe, reliable, smart, energy-saving for edge data center. Consented / Determinedna
L.1400 Overview and general principles of methodologies for assessing the environmental impact of information and communication technologiesRecommendation ITU-T L.1400 presents the general principles on assessing the environmental impact of information and communication technologies (ICT) and outlines the different methodologies that have been developed in the L.1400-series: - Assessment of the environmental impact of ICT goods, networks, and services - Assessment of the environmental impact of ICT projects - Assessment of the environmental impact of ICT in organizations - Assessment of the environmental impact of ICT in cities - Assessment of the environmental impact of the ICT sector - Assessment on how the use of ICT solutions impacts GHG emissions of other sectors - Decarbonization trajectories for the ICT sector - Net zero guidance for ICT organizations - Guidance on how to address the ITU´s Connect 20xx targets The Recommendation describes the intended usage of each Recommendation and the connections between them. Finally, it lists ongoing work items.Consented / Determinedna
L.1480 Enabling the Net Zero transition: Assessing how the use of ICT solutions impacts GHG emissions of other sectorsThis Recommendation provides methodology for assessing how the use of ICT solutions impacts GHG emissions of other sectors. More specifically, the methodology provides guidance on the assessment of the use of ICT solutions covering the net second order effect (i.e. the resulting second order effect after accounting for the emissions due to the first order effects of the ICT solution), and the higher order effects such as rebound. By providing a structured methodological approach, it aims to improve consistency, transparency and comprehensiveness of assessments of how the use of ICT solutions impact GHG emissions over time. Guidance is provided to assess the net second order effect and higher order effects of the following cases: - ICT solution(s) implemented in a specific context by the user of the ICT solution - ICT solution(s) implemented at different scales, including at an organizational level (whether private or public organizations), at a city level, at a country level or at worldwide level. - ICT solution(s) seen from the perspective of an ICT organization contributing to the ICT solution. This includes o Assessment of the aggregated effect of all ICT solutions provided by an ICT organization across all its customers o Assessment of the aggregated effect of one or several ICT solution(s) provided by an ICT organization across some of its customers o Assessment of the effect of one or several specific ICT solution(s) implemented in an actual context for a specific customer. Consented / Determinedna
L.1481 Guidance on how to address Connect2030 targets on net abatementRecommendation ITU-T L.1481 provides guidelines on how to address the Connect 2030 greenhouse gas on net telecommunication/ICT-enabled Greenhouse Gas abatement. It is intended to be utilized by relevant stakeholders of the Connect 2030 ambitions while considering the sustainable development goal (SDG) 13 and the objectives of the Paris Agreement and the Glasgow Climate Pact. It also presents examples of ICT solutions associated with a potential reduction of GHG emissions.Consented / Determinedna
L.1630 Framework of building infrastructure management system for sustainable cityOne of the sustainable development goals of sustainable city is to build resilient and safe city assets. Building is one of the key city assets and closely related with circular and sustainable city. Typically, energy and firefighting equipment are key equipment within the building infrastructure, which may affect the safety of people. Currently, many energy and firefighting equipment are separately deployed and managed, so there exist gaps between energy equipment management and firefighting equipment management. This draft Recommendation defines the framework of building infrastructure management system which improves the sustainability of city, particularly building as a city asset. The framework provides a holistic management of building infrastructure. It also presents a service use cases composed of functional elements. Consented / Determinedna
L.1333 Carbon data intensity for network energy performance monitoringTo meet the targets of the Paris Agreement, telecom operators, like other industries, need to set targets for emission reduction to arrive at a net zero situation as reported in Recommendation ITU-T L.1470. For a situation in which network traffic will increase, this Recommendation defines a key performance indicator (KPI) useful to evaluate network emission and give an indication on how a network can reduce its emission due to energy usage. Recommendation ITU-T L.1333 defines a KPI called network carbon intensity energy (NCIe); it also defines how to apply the Recommendation: which part of the network is covered and how to calculate the metric continuously in network evolution. This Recommendation also defines the correlation between the carbon intensity indicator and energy efficiency metric. The carbon KPI defined in this Recommendation refers to the energy efficiency metric defined in Recommendation ITU-T L.1331.Approved2022-09-22
L.1034 Adequate assessment and sensitization on counterfeit information and communication technology products and their environmental impactRecommendation ITU-T L.1034 provides awareness and guidance on the health and environmental impacts of counterfeit information and communication technology products. The intention is to create awareness and sensitization on human health and environmental risks, as well as measures implemented in different countries for risk mitigation.Approved2022-08-13
L.1040 Effects of information and communication technology-enabled autonomy on vehicles longevity and waste creationRecommendation ITU-T L.1040 establishes guidelines and requirements for information and communication technology original equipment manufacturer vendors providing equipment to autonomous vehicles aiming to reduce the amount of future e-waste. Recommendation ITU-T L.1040 analyses the e-waste risks and other sustainability indicators of autonomous vehicles and proposes how these potential challenges can be mitigated. Recommendation ITU-T L.1040 utilizes information compiled from stakeholders that can provide good insights into the specified potential challenge. Approved2022-08-13
L.1230 Specifications of 10 kVAC input and up to 400 VDC output integrated power system in data centre and telecommunication roomWith the development of big data and cloud computing technology, the quantity and total capacity of the data centre and telecommunication room as well as information and communication technology (ICT) equipment power density is increasing rapidly. Furthermore, it has been found that the traditional power systems had the disadvantages of low energy efficiency, high energy consumption and maintenance difficulties in existing data centre and telecommunication rooms. It is therefore necessary to develop a new structure of the whole power system which integrates the traditional 10 kVAC voltage distribution equipment, transformer, low voltage distribution equipment and up to 400 VDC equipment. In the new structure the distribution system of each voltage level is simplified, so that the maintenance work is reduced, and the reliability of the whole power system is improved. Recommendation ITU-T L.1230 includes system composition, general requirements, and monitoring system, etc. of 10 kVAC input and up to 400 VDC.Approved2022-08-13
L.1240 Evaluation method of safety operations and energy saving for power supply systems in telecommunication rooms or buildingsRecommendation ITU-T L.1240 specifies, for telecommunication rooms or buildings, the overall evaluation framework, classification, reliability grading, evaluation items and evaluation methods for power supply systems. Recommendation ITU-T L.1240 applies to the evaluation of power supply systems, maintenance capability, safety operations and energy saving of various telecommunication rooms or buildings.Approved2022-08-13
L.1318 Q factor: A fundamental metric expressing integrated circuit energy efficiencyRecommendation ITU-T L.1318 outlines a method and fundamental metric for expressing integrated circuit energy efficiency, the Q factor. The Q factor could be applied to measure and improve the integrated circuit technology behind information and communication technology itself. The method consists of two separate parts: 1) Method and metric development; 2) Examples of Q factor scores for different integrated circuits and energy and carbon saving potentials in relation to Q factors.Approved2022-08-13
L.1390 Energy saving technologies and best practices for 5G radio access network (RAN) equipmentThe rapid development and commercialization of 5G radio communication technology is further accelerating 5G network construction. While it is an important enabler for the digitalization of other industries and thereby contributes to significant energy savings and emission reductions, it is also important to consider the energy consumption of the 5G network infrastructure itself. Recommendation ITU-T L.1390 identifies energy saving potentials, describes energy saving principles and technologies for 5G RAN and related equipment, and provides best practice recommendations on when and how these technologies should be used and controlled, thereby reducing 5G RAN energy consumption, saving operational costs and making 5G RAN a green and high-efficiency network. Approved2022-08-13
L.1604 Development framework for bioeconomy in cities and communitiesBioeconomy concerns both sustainability and circularity and covers all biological resources. The aim of this Recommendation is to provide cities with a framework for the development of the bioeconomy, especially under the lens of circularity and sustainability. The main elements examined in this Recommendation are: • The definition and role of bioeconomy in cities, with a focus on circularity and sustainability. • The determination of factors and key performance indicators (KPIs) that affect bioeconomy development in cities. • The definition of a generic implementation framework for bioeconomy in cities. Approved2022-08-13
L.1610 City science application frameworkAs urbanization continues to accelerate, urban governance is struggling to adapt to the environmental and sustainability challenges. The high degree of urban sprawl demands urban planning to be reinvented in order to improve land and resource allocations. This creates further tension between urban and peri-urban areas (locations of close proximity to cities) in terms of economic and environmental sustainability. This Recommendation proposes to analyse and solve these urban problems and challenges by using the city science method. It will demonstrate that by using empirical evidence such as data, the city science method provides the most reliable and consistent way for cities to tackle urban challenges. Approved2022-08-13
L.1620 Guide to circular citiesThe Guide for Circular Cities contains a circular city implementation framework that is designed to improve circularity in cities and support stakeholders in implementing circular actions. The framework consists of a four-step methodology that provides a consistent method for assessing, prioritising and catalysing different circular actions. This deliverable is developed in response to the growing sustainability challenges that cities are facing and the emergence of the circular economy concept and its applicability and extension in the city setting. The Guide starts with an assessment of the main developmental and sustainability challenges that cities are facing and the ways in which the concept of circular economy can be extended beyond the economic sphere and be applied to different city assets. It further defines key components of the circular city implementation framework. These components include: city assets and products (i.e. various city infrastructures, city resources, city goods and services available for use in a city); circular city actions (i.e. outcome-orientated actions that can be applied to city assets and products); circular city outputs (i.e. the outputs of circular city actions applied to city assets and products); and circular city enablers (i.e. complementary activities which support or accelerate implementation of circular city actions). Each of these components contains different quality and potential for facilitating circularity in cities. The interactions between these components form the basis of the circular city implementation framework. Finally, the Guide explains the circular city implementation framework. This framework utilizes four different steps to assist city stakeholders in enacting circular actions. The first step is to establish a baseline for circularity. The second step is to determine the potential of circularity in different assets and to prioritize circular actions based on the availability resources. The third step is to apply city enablers to catalyse different circular actions. The last step is to evaluate the impacts of these actions. Cities are invited to use this Guide to identify a course of action for improving circularity. The Guide also includes practical recommendations for preparing circular city actions and their implementation. The Guide is complemented with 17 case studies that illustrate the application of the circularity concept based on experiences from cities around the world. Approved2022-08-13
Y.4903 Key performance indicators for smart sustainable cities to assess the achievement of sustainable development goalsRecommendation ITU-T Y.4903 provides key performance indicators (KPIs) for smart sustainable cities (SSCs) and general principles for selecting KPIs to help cities achieve sustainable development goals (SDGs). This Recommendation provides a means to benchmarking and disseminating best practices in utilizing ICTs and other technologies to enhance cities' sustainability and connect their smart strategies to the SDGs through an inclusive process. These KPIs are designed to evaluate the role and performance of information communication technologies (ICTs) in the three dimensions of a city: economics, environment, and society and culture. The indicators are uniquely coordinated to allow cities to measure their progress on reaching the ambitious targets set by the SDGs. Approved2022-03-09
L.1016 Method for evaluation of the environmental health and safety performance of true wireless stereo headphonesIn recent years, more and more headphones belonging to the group of true wireless stereo (TWS) products have become commercially available. In 2019, sales of TWS earbuds surpassed the sales of (non-TWS) wireless earphones. The advent of true wireless stereo headphones raises the question on their performance in terms of health and safety of the user. There is a close link between the health/safety of the user and substances used in true wireless stereo headphones. The concept of products with minimal substances of concern and the phasing out of harmful substances for non-essential uses is one of the key aspects in the European Sustainable Chemicals Strategy, which is an important building block towards the goal of zero-pollution, essential for a circular economy. While the idea of non-essential uses is somewhat new in EU legislative initiatives, it originates from the 1978 US Toxic Substances Control Act and was taken up by other countries such as Canada. The concept was finally enshrined in the Montreal Protocol, designed to protect the ozone layer. As more and more countries recognize the importance of a circular economy to combat climate change, the notion of products with minimal substances of concern is gaining relevance. With increasing relevance, the need for a method to compare the environmental, health and safety performance of TWS products is rising. Recommendation ITU-T L.1016 aims to establish a standardized methodology to evaluate a score of the aforementioned aspects. Approved2022-02-13
L.1035 Sustainable management of batteriesRecommendation ITU-T L.1035 provides guidance on the sustainable management of used batteries from information and communication technology (ICT) equipment and their environmentally responsible management, including waste prevention, minimization, recycling, recovery and final disposal. This Recommendation also provides information on best practices in recycling batteries for dissemination. Batteries are crucial for the functioning of ICTs. Improving their design, prolonging their lifespan, improving their recyclability and preventing the dumping of waste batteries can lower their overall energy consumption, reduce exposure of humans and the environment to hazardous substances, as well as reducing global greenhouse gas emissions. Approved2022-02-13
L.1036 Scheduled waste management for a base station (inclusive of e-waste)Recommendation ITU-T L.1036 has been developed following the general environment quality act of a member country. As the 5G era proceeds, a huge global discharge of telecommunication equipment and upgrading of equipment are expected at each base station (BS) globally. Recommendation ITU-T L.1036 is an extension to any requirement stipulated in national environment quality or protection acts, a technical requirement for the telecommunication industry to adopt as a practice to reduce scheduled waste including e-waste at a (BS. In addition, Recommendation ITU-T L.1036 provides guidance on how to dispose of e-waste from a BS including the shared responsibility of owners and third parties involved.Approved2022-02-13
L.1050 Methodology to identify key equipment for environmental impact and e- waste generation assessment of network architecturesWhile a framework for assessing the environmental impacts of the ICT sector exists (developed by the ITU in, for example, Recommendation ITU-T L.1410 on environmental life cycle assessments of information and communication technology goods, networks and services), best practices for equipment identification, developed specifically to assess the environmental impacts of network architecture, are lacking. In this Recommendation, key equipment in networks are identified for smoother life cycle assessment (LCA) calculations. Different types of network architecture employ different goods which entail differences in terms of energy usage, e-waste generation and environmental footprints. This Recommendation will examine three types of network architectures and will suggest an appropriate set of equipment to be considered for each. This Recommendation will begin to support network designers in determining the environmental and circular performance of different network architectures. Recommendation ITU-T L.1050 utilizes information compiled from stakeholders which can provide good insights into the specified potential challenges. Approved2022-01-13
L.1331 Assessment of mobile network energy efficiencyRecommendation ITU-T L.1331 aims to provide a better understanding of the energy efficiency of mobile networks. The focus of this Recommendation is on the metrics and methods of assessing energy efficiency in operational networks. The networks considered are those whose size and scale could be defined by topologic, geographic or demographic boundaries. This Recommendation explains how to extrapolate the measurements made on partial networks to the level of the total network. Such a simplified approach is proposed as a way of making approximate energy efficiency evaluations at the level of network elements and cannot therefore be considered sufficient for the entire network operation including, for example, transport. Approved2022-01-13
L.1317 Guidelines on energy efficient blockchain systemsSeveral models have been introduced to calculate the urban energy system and to demonstrate the variants that calibrate the local energy efficiency. Recommendation ITU-T L.1317 focuses on the impact of blockchain in energy efficiency. A literature analysis is performed with regard to the understanding of the blockchain energy demands and how these can be optimized. The aim of this Recommendation is to explain the energy demand of blockchain, to define the blockchain energy model and to describe the energy efficiency parameters that can be calibrated in order to enhance the corresponding energy efficiency.Approved2021-11-22
L.1033 Guidance for institutions of higher learning to contribute in the effective life cycle management of e-equipment and e-wasteManaging e-waste has been a major problem in many countries. Emerging economies still face a multitude of challenges that hinder the effective management of e-equipment and e-waste. Many of them do not have suitable facilities to handle e-equipment and e-waste and have inadequate implementation frameworks and structures due to the lack of quantifiable data and statistics on e-equipment and e-waste, inadequate policies, regulations, standards and enforcement strategies, low stakeholder engagement/collaboration and limited expertise. Institutions of higher learning have a crucial role in leading society through its influence and the development of individuals. As societal issues become more complex and the boundaries between academia, industry, and the government become unclear, institutions of higher learning must remain the cornerstone of development. Universities among other higher learning institutions are better placed to ensure that the circularity of electrical and electronic equipment (EEE) is achieved to minimize the effects of waste electrical and electronic equipment (WEEE). The role of universities as examples of institutions of higher learning, is to offer training, carry out research and share knowledge, ideas, research output and innovations developed and applied for its benefit and the surrounding communities. Universities have the capacity to develop a curriculum on life cycle-economy processes, including e-waste management, for formal training and material for informal and non-formal training. Universities can also join efforts to research and provide reliable information that can be used in policy formulation, development of standards and strategies on imports and exports to the region. Recommendation ITU-T L.1033 therefore aims to guide institutions of higher learning to collaboratively contribute on key aspects of managing e-resources and e-waste. It explores how these institutions can engage in EEE circularity by checking their effective involvement in every EEE and WEEE process. Approved2021-10-22
L.1383 Smart energy solutions for city and home applicationsRecommendation ITU-T L.1383 focuses on smart energy solutions in different application scenarios facilitating energy saving and carbon emission reduction. Besides their application in the field of ICT, such as in base stations, data centres and telecom centres, smart energy solutions have been applied in cities and homes as an advanced update to ICTs. Cities play a different role in different parts of the world. With the development of smart energy technologies, it is becoming possible to answer key issues in cities worldwide, prompted by the urgent necessity of GHG emissions reduction. This Recommendation includes specific smart energy applications in cities and homes, such as energy sources and energy management functions. Approved2021-10-07
L.1471 Guidance and criteria for information and communication technology organizations on setting Net Zero targets and strategiesCurrently, the definitions of Net Zero and related concepts such as carbon neutrality and climate neutrality for organizations are still under development. Several initiatives, including, inter alia, the Science Based Target Initiative, the United Nations Framework Convention on Climate Change (UNFCCC) Race to Zero, ISO TC 207 and the Net Zero Initiative are working on defining or aligning the different views of these concepts to avoid confusion and reduce risks for green washing. Recommendation ITU-T L.1471 seeks to guide information and communication technology (ICT) organizations in clarifying the meaning of Net Zero in the context of the ICT sector and setting Net Zero targets and strategies. It also identifies actions that would lead the sector towards Net Zero according to the trajectories described in Recommendation ITU T L.1470. Approved2021-09-22