Comment on “Powering sustainable development within planetary boundaries” by I. M. Algunaibet, C. Pozo, A. Galán-Martín, M. A. J. Huijbregts, N. Mac Dowell and G. Guillén-Gosálbez, Energy Environ. Sci., 2019, 12, 1890,Energy & Environmental Science

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Comment on “Powering sustainable development within planetary boundaries” by I. M. Algunaibet, C. Pozo, A. Galán-Martín, M. A. J. Huijbregts, N. Mac Dowell and G. Guillén-Gosálbez, Energy Environ. Sci., 2019, 12, 1890
Energy & Environmental Science ( IF 32.4 ) Pub Date : 2019/12/12 , DOI: 10.1039/c9ee01176e
Yi Yang _{1,

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Affiliation

Algunaibet et al. (2019) reported an important and novel study linking planetary boundaries to individual sectors—in their case, electricity generation in the US—and explored designs that could keep the sector operating within a safe space. In determining the total emissions associated with electricity generation in the US, the authors multiplied electricity's life cycle emission intensities by the total generation. This method, however, commits an accounting error that can lead to overestimation. First, I use an example to illustrate, theoretically and conceptually, why it is incorrect to multiply the total output of an intermediate product, by its life cycle emission intensities. Then, I show that this overestimation error in the specific case of US electricity sector can range from 5% to 200% across different environmental impacts, using the environmentally extended input-output model of the US (USEEIO). Given the novelty and importance of their work, I encourage Algunaibet et al. to revisit their analysis using correct accounting methods.

中文翻译：

IM Algunaibet，C。Pozo，A。Galán-Martín，MAJ Huijbregts，N。Mac Dowell和G.Guillén-Gosálbez（能源环境）对“在行星边界内推动可持续发展提供动力”的评论。科学，2019，12，1890

Algunaibet等。（2019年）报道了一项重要而新颖的研究，该研究将行星边界与各个部门（在美国为发电）相关联，并探索了可使部门保持在安全空间内运行的设计。在确定与美国发电相关的总排放量时，作者将电力的生命周期排放强度乘以总发电量。但是，此方法会导致会计错误，从而导致高估。首先，我用一个例子从理论上和概念上说明为什么将中间产品的总产量乘以其生命周期的排放强度是不正确的。然后，我证明在不同的环境影响下，在美国电力部门的特定情况下，这种高估误差可能在5％到200％的范围内，使用美国的环境扩展投入产出模型（USEEIO）。鉴于他们工作的新颖性和重要性，我鼓励Algunaibet等。使用正确的会计方法重新分析他们的分析。

更新日期：2020-02-13

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