Note that there are several types of reporters under the Greenhouse Gas Reporting Program: direct emitters, suppliers, and facilities that inject CO2 underground. Direct emitters are entities that emit GHGs directly from their facilities as a result of combustion or industrial processes onsite. Suppliers are facilities or entities that supply certain products (e.g., fossil fuels or certain industrial gases) into the economy that, when combusted, released, or oxidized, result in GHG emissions. The emissions do not take place at the suppliers' reporting location. CO2 injection facilities report the quantity of CO2 received for injection, including for use in enhanced oil and gas recovery.

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