Abstract: A carbon accounting system including a data receiving arrangement configured to receive energy data from an energy data collection apparatus; a data aggregation processor configured to aggregate the energy data with other energy data to form aggregated energy data; and a data communicator configured to transfer the aggregated energy data to a blockchain platform. The blockchain platform is configured to share the aggregated energy data and perform carbon accounting on a blockchain. Carbon emissions may be calculated and the energy data may be collected in real-time. The energy data collection apparatus may include a smart meter. The blockchain platform may be configured to automatically convert Renewable Energy Credits (RECs) into Non-Fungible Tokens (NFTs). An exemplary method of accounting for carbon emissions is provided.