A Tour of the Jevons Paradox: How Energy Efficiency Backfires

Blair Fix

EconStor Preprints from ZBW - Leibniz Information Centre for Economics

Abstract: When it comes to our sustainability problems, striving for greater resource efficiency seems like an obvious solution. For example, if you buy a new car that’s twice as efficient as your old one, it should cut your gasoline use in half. And if your new computer is four times more efficient than your last one, it should cut your computer’s electric bill fourfold. In short, boosting efficiency seems like a straightforward way to reduce your use of natural resources. And for you personally, efficiency gains may do exactly that. But collectively, efficiency seems to have the opposite effect As technology gets more efficient, we tend to consume more resources. This backfire effect is known as the ‘Jevons paradox’, and it occurs for a simple reason. At a social level, efficiency is not a tool for conservation; it’s a catalyst for technological sprawl. Here’s how it works. As technology gets more efficient, it cheapens the service that it provides. And when services get cheaper, we tend to use more of them. Hence, efficiency ends up catalyzing greater consumption. Take the evolution of computers as an example. The first computers were room-sized machines that gulped power while doing snail-paced calculations. In contrast, modern computers deliver about a trillion times more computation for the same energy input. Now, in principle, we could have taken this trillion-fold efficiency improvement and reduced our computational energy budget by the same amount. But we didn’t. Instead, we took these efficiency gains and invested them in technological sprawl. We took more efficient computer chips and put them in everything — phones, TVs, cars, fridges, light bulbs, toasters … not to mention data centers. So rather than spur conservation, more efficient computers catalyzed the consumption of more energy. In this regard, computers are not alone. As you’ll see, efficiency backfire seems to be the rule rather than the exception. Far from delivering a cure for our sustainability woes, efficiency gains appear to be a root driver of the over-consumption disease.

Keywords: efficiency; energy; Jevons Paradox (search for similar items in EconPapers)
JEL-codes: B1 P00 Q4 (search for similar items in EconPapers)
Date: 2024
New Economics Papers: this item is included in nep-eff and nep-ene
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