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How do you think factories or furnaces work? Chemistry is a high energy sector, most machines there do not run on electricity.
Or heating your home, hot water, and so on.
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Good point but I still don't get how they would use oil and not some oil derivative? Heating, hot water etc. is done with diesel/gas/electricity. Not oil. No?
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Maybe oil is just the category overlord for diesel, crude, petroleum and kerosene? Maybe @denlillaapan can clarefiy?
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How is oil used for energy/electricity? I get coal and gas, but doesn't oil need to be refined into something else to become useful for energy production? And what's the difference really between energy and electricity?