The case for energy productivity: It’s not just semantics

SummaryRatios that link energy consumption, or its related emissions, to the economic value generated accommodate the differing progress on economic development of nations better than absolute measures. Policymakers are increasingly using indicators such as energy efficiency, intensity, and productivity to address the interrelated issues of economic development, energy security, and environmental sustainability.Although setting formal targets in terms of energy intensity has helped to build consensus on several issues, policymakers have an opportunity to enroll even greater public support through the use of energy productivity.Energy productivity and energy intensity may be reciprocals that share the same components and policy-relevant attributes. But energy productivity has important advantages—the differences between the two measures go beyond semantics. Productivity has a more positive connotation, is more intuitive, is aligned with efficiency, and portrays grander ambition. From a behavioral economics perspective, these traits can help frame policies that yield more meaningful improvements.The mathematical representation of energy intensity makes comparisons of relative change across time and countries more difficult because of something we call the energy intensity illusion—the metric appears to converge towards a mean. Energy productivity’s mathematical representation, on the other hand, avoids this illusion, providing additional insight and making it a more directly relevant measure of a country’s economy, energy, and environmental performance.

概括比率将能源消耗或其相关排放与产生的经济价值联系起来，相较于绝对指标，更能适应各国经济发展的不同进展。政策制定者日益采用能源效率、强度和生产率等指标来应对经济发展、能源安全与环境保护之间的相互关联问题。尽管以能源强度设定正式目标有助于在多个问题上达成共识，但政策制定者仍有机会通过运用能源生产率来获得更广泛的公众支持。能源生产率和能源强度可能是相互关联的倒数，它们共享相同的成分和政策相关属性。然而，能源生产率具有显著的优势——这两项指标之间的差异并不仅限于语义。生产力具有更积极的内涵，更具直观性，与效率一致，并展现更宏伟的愿景。从行为经济学的视角来看，这些特质有助于制定出能够带来更有意义改进的政策。由于所谓的能源强度错觉，能源强度的数学表示使得对时间和国家之间相对变化的比较变得更加困难，该指标似乎趋于平均值。另一方面，能源生产率的数学表示避免了这种错觉，提供了额外的见解，使其成为衡量一个国家经济、能源和环境保护绩效的直接相关指标。