how much energy is used to refine gasoline, or in terms of this, how many gallons of gasoline are needed to refine a gallon of gasoline, do the conversion

Question to Ai from the astute Thomas Paul Murphy 

how much energy is used to refine gasoline, or in terms of this, how many gallons of gasoline are needed to refine a gallon of gasoline, do the conversion

My summary of Ai answer, it takes roughly 1/5 to 1/6 of the energy present in a gallon of gasoline to make one gallon of gasoline.

The astute answer of Ai.

Refining one gallon of gasoline requires about 6 kWh of total process energy (roughly 20,472 BTU), which equals about 0.17 gallons of gasoline-equivalent energy. [1]
Energy Required to Refine Gasoline
  • Total Energy Input: Studies by the Department of Energy's Argonne National Laboratory show that extracting, transporting, and refining petroleum into a gallon of finished gasoline takes about 6 kWh (or ~21,000 BTU) of energy per gallon produced. [1, 2]
  • Refinery Efficiency: Petroleum refineries operate at roughly 84% to 88% energy efficiency, losing about 12% to 16% of the incoming crude energy during the intense heating, distillation, and catalytic cracking processes. [1]
The Conversion (Gallons to Refine a Gallon)
  • Energy Content of Gasoline: One standard gallon of motor gasoline contains about 120,214 BTU of energy.
  • The Math: Dividing the energy used in the refining process (20,472 BTU) by the energy contained in a finished gallon of gas (120,214 BTU) gives roughly 0.17 gallons of fuel-equivalent energy.
  • In other words, it takes the energy equivalent of about one-sixth of a gallon of gasoline to refine one full gallon of usable gasoline. [1]
Would you like to compare this energy cost to the energy required to charge and run an electric vehicle (EV) over the same distance?

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