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| Rec. No. | Title | Summary | Status | Approval Date |
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L.1026
| Guidelines for Data Sanitization and Resource Recovery of Decommissioned Storage Devices | This Recommendation provides guidance for the secure and environmentally responsible management of decommissioned storage devices.
It specifies a risk-based framework for the classification, sanitization, verification, post-sanitization handling, resource recovery and disposal of decommissioned storage devices. The framework supports the assignment of sanitization levels by taking into account data sensitivity, classified as Low, Moderate or High, storage technology characteristics, device condition, residual data risk and intended post-sanitization handling pathways.
This Recommendation defines three sanitization levels: L1 logical sanitization, L2 enhanced sanitization and L3 physical destruction. It establishes principles for selecting appropriate sanitization levels and methods according to the assessed risk and applicable security requirements, without prescribing a fixed one-to-one correspondence between data sensitivity levels and sanitization levels. It also provides guidance on post-sanitization handling pathways, including reuse, refurbishment, controlled component reclamation, material recovery and disposal.
The objective of this Recommendation is to support effective control of residual data risk while promoting resource recovery, environmental sustainability, traceability and lifecycle management of decommissioned storage devices. | Consented / Determined | na |
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L.1223
| Aqueous Zinc-Based Battery Systems for Base Station Applications | The present Recommendation introduces the sustainable aqueous zinc-based battery system adapted to base station application with standardized power interfaces in –48V DC. It covers technologies, characteristics, evaluatione and test of battery products.
This Recommendation describes the main requirements and possible tests of an aqueous zinc-based battery system for base station application. This includes mechanical performance, electrical performance, environmental performance, lifetime performance, installation, operation and maintenance complexity, safety, and management/monitoring at battery. This Recommendation specifies evaluation methods and tests which complement those of existing relevant standards requirements. | Consented / Determined | na |
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L.1224
| Requirements for Safety of Lithium-ion Batteries in Telecommunication base station sites and telecommunication rooms | With the evolution of 5G/5G-Advanced and the increasing requirements for energy conservation and GHG emissions reduction in the telecommunication industry, lithium iron phosphate (LFP) batteries are rapidly becoming the mainstream choice for backup power in telecommunication sites (including core equipment rooms), gradually replacing traditional lead-acid batteries.
The present document focuses on detailed design, verification, and management standards. It covers the following aspects: (1) Product requirements for lithium-ion batteries used in telecommunication sites; (2) Safety and reliability requirements; (3) General test conditions and methods; (4) Sampling and inspection rules; (5) Marking, packaging, transportation, storage and disposal. | Consented / Determined | na |
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L.1225
| Application practices of smart managements of Lithium iron phosphate battery in telecommunication rooms and data centers | This Recommendation focuses on smart managements of lithium iron phosphate batteries in telecommunication rooms and data centres. Based on the status quo of the on-net communication power reserve systems, this Recommendation will describe the characteristics of the power reserve architecture which would be applied in 5G era. | Consented / Determined | na |
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L.1313
| Requirements for energy-efficient management of data storage in data centers | This Recommendation specifies guidance for energy-efficient management of data storage in data centers and distributed computing environments. It defines a framework comprising four functional layers: data preprocessing; data classification and data storage lifecycle decision; energy-aware data storage execution; and network coordination. Based on this framework, the Recommendation specifies requirements for each layer to enable energy-efficient data storage management. | Consented / Determined | na |
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L.1314
| Energy Efficiency State Assessment for Data Storage Devices | Recommendation ITU-T L.1314 contains a definition of the energy efficiency state index - data storage (EESI-DS), a method for the online energy efficiency state assessment of data storage devices, and methods for energy saving optimization. | Consented / Determined | na |
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L.1323
| Methodologies of optimization for multi-level thermal environment of Data Centre | This Recommendation provides key optimization methodologies for different cooling methods under a multi-level optimization framework of chip, device, row/cabinet, and room levels, aligned with the corresponding indicator system. The multi-level thermal environment optimization methodologies includes:
- Establishing an end-to-end optimization framework, defining a process from pre-assessment, selection of optimization levels and objects, solution design and implementation, through to results reporting—supporting both one-off and cyclical/iterative optimization;
-Level-specific optimization methods for the chip, device, row/cabinet, and room levels, including foundational guidance, general optimization guidelines, and cooling-specific guidelines for air and liquid cooling;
- Practical multi-level optimization case studies for reference and adoption across the DC value chain.
| Consented / Determined | na |
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L.1329
| Application practice of Direct Current dual-cooling source air conditioner in base station | This draft Recommendation addresses the critical need for energy-efficient cooling solutions in telecommunication base stations amid rising power demands and global climate goals. It provides technical specifications and implementation guidelines for Direct Current (DC) dual-cooling source air conditioning systems that integrate mechanical refrigeration (via DC inverter compressors) with natural cooling technologies (via heat pipes).
It introduces an adaptive control strategy that enables automatic switching among three cooling sub-modes: mechanical refrigeration, natural cooling source refrigeration, and dual-cooling source refrigeration. Priority is given to natural cooling to minimize energy consumption and carbon emissions. The equipment features inherent compatibility with DC power sources, allowing seamless operation powered by backup batteries, energy storage systems, or photovoltaic (PV) arrays. This draft Recommendation also identifies typical application scenarios, including mission-critical base stations, PV-integrated base stations. | Consented / Determined | na |
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L.1398
| High Efficiency Liquid Cooling Solutions and Practices for Data Centres to Climate Change Mitigation and Adaptation | This Recommendation addresses the need for high-efficiency liquid cooling in data centres as a means to support climate change mitigation and adaptation. Recognizing the limitations of conventional air cooling under rising heat-flux densities, it provides a structured overview of cold plate, immersion and spray cooling approaches, with cold plate architecture examined as the primary technical route. The Recommendation establishes a set of energy efficiency metrics—including cooling system Coefficient Of Performance (COP), cooling load factor, and part-load efficiency—together with associated measurement and reporting requirements. It further consolidates best practices for the deployment, operation and maintenance of cold plate liquid cooling systems, with the aim of facilitating consistent evaluation and practical implementation across data centre facilities. | Consented / Determined | na |
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L.1416
| Methodology for the assessment of the carbon footprint of a smart electricity meter | This Recommendation aims to provide a methodology for the carbon footprint assessment of smart electricity meters (SEM). General requirements for the carbon footprint of a SEM, including scope, terms and definitions, system boundaries, functional unit, data collection, assessment methodology, etc.
This Recommendation applies to the assessment of the carbon footprint of SEM that integrates both electrical energy measurement and information and communication technology (ICT).
This Recommendation includes guidance for the different steps for assessments namely goal and scope definition, life cycle inventory, life cycle impact assessment, life cycle interpretation and reporting. | Consented / Determined | na |
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L.1422
| Guidelines for GHG emissions accounting in power systems | This Recommendation provides guidelines for greenhouse gas (GHG) emissions accounting in power systems. It specifies the general principles, scope of GHG emissions, accounting boundaries, accounting items and calculation methods for direct GHG emissions (Scope 1), energy-related indirect GHG emissions (Scope 2), and value-chain indirect GHG emissions (Scope 3) associated with power generation, transmission, distribution, electricity retail and related activities. It aligns with the GHG Protocol and other relevant standards while providing power-system-specific classification and mapping of emission sources. The Recommendation defines ICT-based functional requirements for data acquisition, transmission and integration, calculation, quality control, archiving, traceability, reporting and visualization, and adopts a "Cloud-Pipe-Edge-Terminal" collaborative architecture. Typical scenarios include coal-fired power plants, photovoltaic systems, and AI computing infrastructure with computing-power coordination. It is applicable to power generation enterprises, transmission and distribution system operators, electricity retailers, other power-system operators, operators of AI computing infrastructure within the accounting boundary, third-party GHG verification bodies, and ICT system developers or service providers. | Consented / Determined | na |
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L.1472
| Requirements for the creation of an ITU database on energy consumption and GHG emissions of the ICT sector | This Recommendation provides the requirements to support the creation of an International Telecommunication Union (ITU) database on greenhouse gas (GHG) emissions of the Global information and communication technology (ICT) sector at worldwide level and at a national level. The guidance is intended to support ITU in establishing such a database. | Consented / Determined | na |
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L.1494
| Best practices for decarbonization of smart city in support of net zero | This Recommendation provides requirements, guidance and best practices for using information and communication technologies (ICTs) to support the reduction of greenhouse gas (GHG) emissions in smart cities. It addresses city-level GHG assessment, regional considerations, ICT-enabled functional capabilities and applications in energy activities, industrial processes and product use, agriculture, forestry and other land use, and waste. It distinguishes city inventories from assessments of individual ICT-enabled measures and describes the information needed to substantiate reported results. Illustrative applications support the selection of measures appropriate to local conditions and progress towards net-zero GHG emissions. | Consented / Determined | na |
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L.1509
| Framework and guidelines for mitigating and adapting climate change through digital transformation of manufacturing industry | This Recommendation aims to establish a Framework and Guidelines for mitigating and adapting Climate Change through Digital Transformation of Manufacturing Industry.
The framework comprises three pillars: digital transformation, climate change and the whole life cycle of the manufacturing process. The digital transformation pillar has four layers, namely infrastructure, data, platform and application. The climate change pillar addresses climate change mitigation, including energy, water and material consumption and greenhouse gas (GHG) emissions, and climate change adaptation, including climate risk early warning, emergency response and supply chain resilience. The whole life cycle pillar applies these measures across the life cycle stages of design, supply chain and logistics, manufacturing and operations, customer use and end of life treatment. The framework defines guidelines and requirements for climate change mitigation and adaptation, covering green energy transition, energy conservation and carbon emission reduction, energy-efficiency improvement, circularity, climate risk early warning, emergency response, supply chain resilience, business continuity and long-term operational adjustment. It also specifies digital factory requirements on network interconnection, data communication, integrated optimization and closed-loop operation, information interoperability, and low-carbon manufacturing optimization, and provides best practices for digitalization-enabled climate change mitigation and adaptation.
This Recommendation supports the digital transformation in the whole life-cycle of the manufacturing industry to achieve climate change mitigation and adaptation. | Consented / Determined | na |
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L.1531
| Guidelines for the construction of smart low-carbon power supply facilities adapted to island biodiversity | This Recommendation provides guidelines for the construction of smart low-carbon power supply facilities adapted to island biodiversity. It specifies basic requirements for island biodiversity protection and low-carbon emissions, and provides guidance for integrating these requirements throughout the planning, design, construction, and post-construction monitoring of power supply facilities.
It also describes the reference model of the facilities, and provides guidelines for multi-source monitoring, data analysis and decision-making, and intelligent control and feedback. These guidelines help maintain island ecosystem stability and support adaptive ecological and energy management.
The facilities combine power supply infrastructure with biodiversity-adapted information and communication technology (ICT) systems. This integration supports proactive management and closed-loop optimization of ecological risks and low-carbon operations with achieving reliable power supply, higher energy efficiency, lower life-cycle carbon emissions and less ecological disturbance than conventional solutions.
| Consented / Determined | na |
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L.1633
| Resolution method for building infrastructure management systems (BIMS) in sustainable city | Efficient management of building infrastructure equipment is essential for improving operational efficiency, optimizing energy consumption and supporting sustainability objectives. Building Infrastructure Management Systems (BIMS) enable the monitoring and management of different types of building equipment. However, interoperability between heterogeneous equipment and management systems remains a challenge, particularly when these systems operate independently using different technologies and identification schemes. Improved information exchange is therefore necessary to support integrated building infrastructure management.
This Recommendation describes the role of identifier resolution in BIMS and the use of the Domain Name System (DNS) as a mechanism for associating equipment identifiers with relevant information, resources, services or network locations. Where the associated resource is a service, DNS-based Service Discovery (DNS-SD) can additionally be used to locate the corresponding service and obtain its access information. These mechanisms can facilitate interoperability and information exchange between heterogeneous building infrastructure systems, contributing to more integrated and efficient management of building infrastructure, including energy infrastructure in sustainable buildings. | Consented / Determined | na |
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L.1803
| Guidelines for the assessment of the carbon footprint of Software Products | The proportion of software products in the carbon emissions of the whole society will gradually increase, and the demand for carbon footprint accounting of software products will also grow rapidly. This recommendation specifies the boundary, life cycle stages, data requirements, assessment of the carbon footprint of Software products. The main purpose of this recommendation is to provide general principles for guiding relevant parties to calculate the carbon footprint of software products, and improve the transparency and consistency of carbon footprint evaluation of software products. The recommendation is supposed to help stakeholders to comprehensively understand their carbon emissions and to help identify key emission reduction strategies during the overall life cycle of software products. | Consented / Determined | na |
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L.1902
| Standardized Terminology for computing power and electric power coordination | This Recommendation defines a set of terms frequently utilized in the context of computing power and electric power coordination, with the objective of ensuring energy efficiency and optimizing computing performance. Each definition offers a fundamental description of the terms, and when necessary, additional notes are provided to enhance clarity and understanding. Furthermore, Clause 8 provides the corresponding key terms and definitions. | Consented / Determined | na |
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L.1931
| Functional requirements and implementation guidelines of virtual power plants at data centres | This Recommendation specifies the functional requirements and implementation guidelines for a data centre based virtual power plant (VPP-DC). As data centres is one of the major energy consumers in the ICT sector, VPP-DC leverages their flexible resources—including uninterruptible power supplies (UPS), backup generators, cooling systems, and controllable IT loads—to participate in grid demand response and ancillary services. The document defines a four-layer architecture (Grid layer, Aggregation layer, Data centre layer, and Resources layer), outlines key functional modules for resource aggregation and dispatch, and provides technical guidelines for security, communication, and economic evaluation. | Consented / Determined | na |
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L.1401
| Guidelines for Data Annotation for GHG emissions Verification Knowledge Graph | This Recommendation provides guidelines for data annotation for GHG emissions verification knowledge graphs. It specifies requirements, principles, and methods for data collection, ontology modelling, data annotation and data quality management to support the construction, maintenance, and application of GHG emissions verification knowledge graphs.
The Recommendation supports the consistent and interoperable annotation of GHG emissions-related data derived from multiple sources, including industrial processes, energy consumption activities, supply chains, and carbon accounting systems. It provides guidance for knowledge representation, semantic association, information exchange, and data integration among GHG emissions verification systems, applications, and services.
By establishing a standardized data annotation framework, this Recommendation facilitates the development and deployment of knowledge graph-based GHG emissions verification solutions and supports the effective organization and utilization of GHG emissions verification data. | Approved | 2026-10-07 |
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L.1493
| Framework and methodology for assessing ICT-based virtual power plants to climate change mitigation | This Recommendation aims to establish a methodological framework for assessing the contribution of VPP to mitigating climate change. As the global net-zero process accelerates, VPPs, as a key means of integrating distributed energy resources and enhancing system flexibility and low-carbon dispatch capabilities, are increasingly valued. However, there is currently a lack of unified methodology globally to measure the GHG emission reduction effects achieved by VPPs.
This Recommendation will propose unified terminology, definitions, methodologies for setting assessment boundaries, assessment model, and methodologies for identifying technological pathways, which are supporting the assessment of GHG emission reduction by enablement of different types of Virtual Power Plants operation. | Approved | 2026-09-22 |
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L.1022
| Circular economy: Definitions and concepts for circular economy for information and communication technology | Recommendation ITU-T L.1022 contains a guide to the circular economy (CE) aspects, parameters, metrics and indicators for information and communication technology (ICT) based on current approaches, concepts and metrics of the CE as defined in existing standards, while considering their applicability for ICT.
In this Recommendation ICT is defined based on the definition given by the Organisation for Economic Co-operation and Development (OECD) (See [b-ISIC] in the Bibliography).
This Recommendation discusses the special considerations and challenges in a broader and more in-depth context for all ICT defining parameters, metrics and indicators with the intention to guide the vertical standardization of material efficiency for ICT.
The guidelines also aim to examine the kindsprovide overviews of CE related regulation and standards that are available and to assess their relevance for ICT product groups citing examples of interrelated relevance throughout the text of the Recommendation. | Approved | 2026-07-29 |
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L.1203
| Colour and marking identification of up to 400 VDC power distribution for information and communication technology systems | Recommendation ITU-T L.1203 defines the requirements and guidelines for DC power distribution identification by colour and marking in Telecom/ICT installations (wire, cables, electric distribution boards, interconnections, etc.). It avoids confusion and errors between the different AC and DC power interfaces and distributions used in buildings and inside Telecom/ICT systems, as 400 VDC power feeding interfaces standardized in Recommendation ITU-T L.1200 is used more, increasing power density of ICT equipment, energy efficiency, simplified reliable power feeding architecture, costs optimisation, etc. Recommendation ITU-T L.1203 supports the progressive introduction of up to 400 VDC installations in cohabitation with the existing -48 VDC and AC distribution. | Approved | 2026-07-29 |
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L.1309
| Energy saving design for data centres considering harmonization of cloud and edge | With the rapid development of digitalization across most industry sectors, data processing through data centres has become increasingly necessary. As a result of the many different types of data application scenarios in areas such as the Internet, finance, transportation, and smart homes, cloud data centres and edge data centres have gradually been established to meet these needs.
With the widespread deployment of cloud and edge data centres, energy savings have become increasingly important for data centres worldwide.
The objective of this Recommendation is to clarify the requirements for designing the energy-saving aspects of cloud and edge data centres and to promote their wider adoption on a large scale in the future.
| Approved | 2026-07-29 |
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L.1312
| Guidelines on multi-dimensional environmental metrics and management for data centres | This Recommendation establishes a multi-dimensional framework for assessing the environmental performance of data centres across their life cycle. It defines a set of metrics covering energy efficiency, resource efficiency, greenhouse gas emissions and environmental impact, and provides a method to aggregate these into a comprehensive evaluation metric. In addition, it identifies key metrics across life cycle stages and offers guidance for their effective management, supporting improved environmental sustainability and informed decision-making for data centre design and operation. | Approved | 2026-07-29 |