Greenhouse Gas Protocol

The Greenhouse Gas Protocol is the accounting standard underneath virtually all corporate carbon reporting, defining how emissions are measured and categorised into Scope 1 (direct), Scope 2 (purchased energy) and Scope 3 (value chain). It is the schema every climate-disclosure regime and carbon-accounting platform ultimately reduces to, and it is a measurement methodology rather than a data-exchange format — there is no machine-readable representation of a GHG Protocol inventory.