Answers · Technology
What is the difference between raw biogas and renewable natural gas?
Short answer
Raw biogas contains methane, carbon dioxide, moisture, and trace impurities. Renewable natural gas is biogas upgraded to a quality suitable for a specified natural-gas use or delivery route.
Specify where the gas goes
Ask for the actual gas purchaser’s or pipeline operator’s specification. Quality and pressure requirements depend on the destination and may affect the cost and size of the upgrading equipment.
Compare like volumes
Raw biogas output and RNG sold differ in methane content and processing loss. Require the temperature and pressure basis for reported volumes, and track the purchased energy used by upgrading and compression.
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