OFweek Instrument and Meter Network News: Recently, the National Standards Committee held a press conference to release 11 national standards for greenhouse gas management, including the General Principles for Greenhouse Gas Emission Accounting and Reporting of Industrial Enterprises and the greenhouse gas emission accounting methods and reporting requirements for 10 key industries such as power generation, iron and steel, civil aviation, chemical industry, and cement. Yin Minghan, deputy director of the National Standards Commission, attended the press conference and delivered a speech.

The first batch of standards put forward unified requirements for "what is and how to calculate" corporate greenhouse gas emissions, which will provide technical support for reducing the cost of carbon emission reduction for enterprises and establishing a unified national carbon emission trading market. The new standard will be implemented from June 6 next year.

The national standard of "General Principles for Greenhouse Gas Emission Accounting and Reporting of Industrial Enterprises" stipulates six important contents, including the basic principles, work process, accounting boundary, accounting steps and methods, quality assurance, and reporting content of greenhouse gas emissions accounting and reporting of industrial enterprises. Among them, the accounting boundary includes three major systems of the enterprise, such as main production, auxiliary production and auxiliary production. The scope of accounting includes emissions from combustion of fuel produced by enterprises, emissions from processes, and emissions from purchased and exported electricity and heat. The accounting method is divided into two categories: "calculation" and "actual measurement", and the reference factors for choosing the accounting method are given, which is convenient for enterprises to use.

Seven national standards for greenhouse gas emission accounting and reporting requirements, including power generation, iron and steel, magnesium smelting, flat glass, cement, ceramics, and civil aviation, mainly stipulate the accounting requirements for enterprise carbon dioxide emissions, and clearly define the scope of greenhouse gas accounting. For example, in addition to CO7 emissions from fossil fuel combustion and the purchase of electricity by enterprises, power generation companies also include CO<> emissions from the desulfurization process; Steel companies also include the decomposition of purchased carbon-containing raw materials and fluxes, carbon dioxide emissions from oxidation, and emissions implied by carbon sequestering products.

The national standards for accounting and reporting of greenhouse gas emissions such as power grid, chemical industry and aluminum smelting include other greenhouse gas emission accounting in addition to carbon dioxide emission accounting. The standard stipulates that power grid enterprises need to account for sulfur hexafluoride emissions during equipment maintenance and decommissioning, chemical enterprises need to account for nitrous oxide emissions if there is nitric acid or adipic acid production process, and aluminum smelting enterprises need to account for perfluorinated carbon emissions generated by the anodic effect.

The new standard fully absorbs the pilot experience of China's carbon emission trading, and at the same time refers to relevant international standards, effectively solves the problems of lack of greenhouse gas emission standards and inconsistent accounting methods, and achieves a major breakthrough in China's national greenhouse gas management standards from scratch. Enterprises can calculate greenhouse gas emissions and prepare enterprise greenhouse gas emission reports in accordance with the methods provided by the above series of national standards.

The issuance and implementation of the first batch of national standards for greenhouse gas management is an important part of the implementation of a series of planning requirements such as the national "Twelfth Five-Year Plan" and the "Twelfth Five-Year Plan" work plan for controlling greenhouse gas emissions, and will become a powerful starting point for strengthening the overall work of addressing climate change and promoting economic development. Standards will play a positive role in promoting China's implementation of low-carbon development strategy, achieving total carbon emission control, achieving emission reduction goals, practicing green development and promoting the construction of ecological civilization.