Carbon accounting at the product level is called carbon footprint accounting in the industry, and carbon footprint refers to the carbon emissions of a product in the entire life cycle from raw material extraction to final disposal or utilization.
The carbon footprint accounting business has grown rapidly after China's "dual carbon" goal was proposed, and the biggest business demand comes from the EU's environmental policy on imported products and the requirements of downstream customers.
Accounting guidelines and standards
Internationally referenced guidelines include those published by the British Standards Institution (BSI).pas 2050, issued by the International Organization for Standardization (ISO).iso 14067, the European Union's Product Environmental Footprint Methodology (PEF), and the Product Life Cycle Accounting and Reporting Standard published by WRI.
Product Carbon Footprint Accounting Steps
1. Determine the functional unit
The main purpose is to determine the target unit of carbon footprint calculation, and in order to ensure the accuracy and comparability of the target unit, it is also necessary to refine the object unit of these daily descriptions, such as a 500ml glass teacup.
2. Process diagram drawing and system boundary determination
Process diagram drawing: all the input and output items (such as various raw materials, various energy, etc.) of all processes of the product are drawn, and the process diagram of the product can be obtained.
When drawing a process diagram, first consider whether the process is cradle-to-gate or cradle-to-grave.