Hongyuan 3E is a carbon-accounting and climate-planning platform developed under the leadership of experts from the Chinese Academy of Sciences. Its services support businesses, individuals, and communities seeking to understand and reduce greenhouse-gas emissions in line with China’s carbon-peaking and carbon-neutrality goals. The platform offers free preliminary carbon calculations, including a personal and household footprint calculator covering everyday activities across clothing, food, housing, transport, and consumption.

Users can choose monthly or annual estimates and register to track emissions and manage carbon credits, offsets, and related investments. For businesses, Hongyuan 3E provides organizational emissions pre-assessments, as well as professional accounting applications, operational carbon diagnosis and monitoring, and industry analysis reports to inform emissions reduction and cost management. Its wider resources include carbon-neutrality models and pathways for global, national, regional, and city contexts, along with dedicated services for catering-sector accounting, corporate social responsibility, carbon offsets, and environmental, social, and governance considerations.

The platform also shares expert research, project examples, and updates to help users plan practical steps toward a greener, more sustainable future