Those of us who care about energy and environmental policy have a bad habit: the lazy but rhetorically convenient tendency to refer to energy issues as if they were fuel issues. From solar to coal to uranium, we have developed a shorthand that uses these words to describe a whole fuel-chain, from raw fuel extraction/recovery to end-use consumption. But the language is dangerous. What matters is efficiency -- true, fuel-agnostic efficiency, applied equally to every possible fuel-chain we know. Not because efficiency is an alternative to any given fuel, but because any other energy policy is ultimately unsustainable, in every …
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