Emission Factor Database (EFDB) is an essential tool in carbon accounting and auditing. Let’s me give you some ideas: What Is the Emission Factor Database (EFDB)? The EFDB is a global reference database of emission factors — values used to estimate the amount of greenhouse gas (GHG) emissions released from specific activities or energy use. It is maintained by the Intergovernmental Panel on Climate Change (IPCC) to support consistent and transparent GHG inventories ar