Core Insights - The article highlights the collaboration between State Grid Jiangsu Nanjing Power Supply Company and Gree Electric Appliances in optimizing carbon footprint calculations for their products, particularly the "Tianli Variable Frequency 3" air conditioning unit [1] Group 1: Carbon Footprint Calculation - Gree Electric Appliances received a carbon footprint verification statement for its "Tianli Variable Frequency 3" air conditioning unit, thanks to the assistance in precise carbon footprint calculations [1] - The traditional fixed carbon factor calculation methods are inadequate for measuring the rapid development of renewable energy in China, prompting the need for a more refined approach [1] - The newly introduced "Time-Section, Regional, and Voltage-Level Carbon Factor Database" allows for more accurate carbon footprint calculations by breaking away from the one-size-fits-all method [1] Group 2: Impact on Product Emissions - The carbon footprint factor for the "Tianli Variable Frequency 3" air conditioning unit was reduced from 0.763 kg CO2 equivalent per kilowatt-hour to 0.658 kg CO2 equivalent, representing a decrease of approximately 13.8% in indirect emissions [1] - The verified carbon footprint for each functional unit of the product is 302.03 kg CO2 equivalent [1] Group 3: Broader Industry Implications - The new calculation method can potentially reduce carbon footprints by up to 31.2% in industries such as aluminum and battery cells, significantly aiding the green transformation of the entire supply chain [2]