Net-zero transformation has become a crucial issue that companies must consider in their operations. Greenhouse gas(GHG) inventory is the starting point for carbon reduction. To help companies address their concerns about carbon reduction, Chunghwa Telecom has planned a one-stop service for GHG inventory. This service includes GHG inventory consultation, inventory systems, and collaboration with third-party partners for verification. Companies can choose the services they need based on their requirements and current status. By implementing Chunghwa Telecom's GHG inventory system, companies can establish standard operating procedures (SOPs) to streamline the inventory process. This serves as a foundation for reducing GHG and helps companies plan their reduction strategies and track their carbon reduction goals.

The O Carbon Cloud is based on GHG inventory standard (ISO 14064-1) and can be extended to include carbon footprint of product (ISO 14067). To meet the Financial Supervisory Commission's requirement for climate-related financial disclosures, the system also incorporates TCFD functionality with built-in climate big data. This enables companies to conduct scenario simulations and data quantification, helping them better understand the risks and opportunities associated with climate factors.