GB/T 45818-2025 in English

VALID

Greenhouse gases—Quantification methodologies and requirements for carbon footprint of products—Lighting products

Issued on:2025-05-30
Implemented on:2025-12-01
File Format:PDF
Delivery:Via email within 5 business days

Price(USD)： $435.00
$422.00

Standard No:	GB/T 45818-2025
Document status:	VALID
Title in English:	Greenhouse gases—Quantification methodologies and requirements for carbon footprint of products—Lighting products
Title in Chinese:	温室气体产品碳足迹量化方法与要求照明产品
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 5 business days
Issued on:	2025-05-30
Implemented on:	2025-12-01
ICS Classification:	29.140.40-Luminaires
Chinese Classification:	K70-Electric lighting in general
Professional Classification:	GB-National Standard
Related Keywords:	carbon footprint calculationfebruary-march full implementationestablish carbon footprint management system products introduction analysis multi-functional lighting system equipmentmarch-june trial calculation verificationselect representative products
Related Topics:	gas factor Chemical System Requirements gas way Quantify Rated output and actual output Greenhouse Gas Standard Greenhouse Gas-Product Carbon Footprint Quantification Requirements and Guidelines Requirements and Guidelines for Carbon Footprint Quantification of Greenhouse Gas Products Carbon footprint quantification

《GB/T 45818-2025温室气体产品碳足迹量化方法与要求照明产品》由TC224（全国照明电器标准化技术委员会）、全国碳排放管理标准化技术委员会联合归口，主管部门为中国轻工业联合会。

Introduction

Analysis of the key points of the standard

This standard systematically constructs a methodology system for quantifying the carbon footprint of lighting products for the first time. It innovatively divides the entire life cycle of products such as LED light sources and lamps into five stages, and clearly defines the functional unit (1000 lumens·1000 hours) as a unified comparison benchmark. The technical highlights are reflected in:

Phase	Key accounting elements	Data quality requirements	Typical emission proportion
Raw material acquisition	Carbon emission factors of materials such as metals/plastics/glass	Supplier data priority	15-25%
Manufacturing	Power consumption, direct process emissions	1 year of continuous production data	20-30%
Transportation and logistics	Transportation mode × distance × load	According to the default value of Appendix A	5-8%
Use phase	Energy efficiency×lifespan×regional grid factor	Test report verification	40-60%
End of life	Recycling rate×treatment method	Industry average data	2-5%

Key technology breakthroughs

Dynamic allocation mechanism

For the multi-functional lighting system, the principle of dual allocation of working hours/quality is proposed:

Energy consumption allocation: The standard working hours method is adopted, with the actual production working hours of lighting products as the benchmark
Material emission allocation: Raw materials such as aluminum substrates are allocated according to mass ratio, and optical components are allocated according to quantity

Use the innovative algorithm in the stage

Establish a luminous flux-energy consumption coupling calculation model:

C_op = Σ(P×L×EF_e) + standby energy consumption + replacement accessories emission

Among them, the regional power grid factor requires the use of provincial data first. For example, the Yangtze River Delta region should use 0.581kgCO₂e/kWh (2023 data)

Solutions to implementation difficulties

Data acquisition strategy

Primary data: Establish an online monitoring system for production energy consumption, and collect key process data such as injection molding and packaging in real time

Secondary data:

Metal materials	Refer to GB/T 51366-2019
Transportation emissions	Select the corresponding vehicle model factor according to Table A.2
Recycling	Use the data from the annual report of the China Lighting Association

Typical problem response

Case: An LED street lamp company found that the emission during the use phase accounted for 68%. By:

Using an intelligent dimming control system to reduce operating energy consumption by 30%
Optimizing heat dissipation design to extend service life to 50,000 hours
Using photovoltaic power in Xinjiang (emission factor 0.32kgCO₂e/kWh)

Finally, the carbon footprint of the product was reduced by 42%

Analysis of Standard Evolution

Compared with the international standard ISO 14067, this standard has three major features:

Localization factor: includes localization parameters such as China's power grid regional division and typical transportation distance
Industry adaptability: special provisions for the standby power consumption calculation method for dimmable lamps
Extensible framework: reserved functional unit definition interface for special lighting applications such as UV curing

Enterprise Implementation Roadmap

Phase	Work Content	Period
Preparation period	Establish a cross-departmental team to identify key emission sources	January-February
Data collection	Establish raw material database and install monitoring equipment	March-June
Trial calculation verification	Select representative products to complete the first round of calculation	February-March
Full implementation	Establish carbon footprint management system and carry out design optimization	Continuous improvement