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All of the fuels listed in the grandparent have extracting and refining costs which depend on the source.
by bolasanibk 10y ago
All of the fuels listed in the grandparent have extracting and refining costs which depend on the source.
- vkou 10y agoThat is true - but I believe that extraction and refining is a much bigger contributor to oil's footprint, compared to coal's. It is also far more variable. To turn a barrel of tar sands oil into gasoline, for example, adds another ~230 pounds of CO2 to the atmosphere - in addition to the emissions from burning it. That's ~40 pounds/million BTU. It almost costs us more energy to mine and refine tar sands oil, then we get out of burning it.