Question: how much energy does it take to make plastic bags?
Answer: In one estimate, a single plastic bag uses 495kJ of natural gas, 120 kJ of petroleum, and 80 kJ of coal[5]. Another found that 1500 plastic bags use 159 MJ in fuel production, 171 MJ in fuel use, 16 MJ in transportation, and 418 MJ in feedstock, for a total of 763 MJ.