ABSTRACT Southwest Indian Ocean (SWIO) islands rely extensively on imported fossil energy to fuel their economic and social activities. This dependency coupled with energy price volatility and possible supply chain disruptions further threaten their sustainable energy future. The concept of energy vulnerability is used as a framework to assess the extent to which SWIO islands are vulnerable to adverse events by means of a composite index of energy vulnerability. It is expressed as the geometric mean of five sub-indicators: access to energy, energy import dependency, primary energy mix diversity, primary energy intensity of gross domestic product (GDP) and energy bill. Energy performances vary across SWIO islands and dimensions contributing the most to energy vulnerability are analyzed. The energy vulnerability index can be used by policy-makers as a benchmarking tool in ‘under-performing’ islands to duplicate best practices and accelerate energy transition in the region.

中文翻译：

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西南印度洋岛屿的能源脆弱性

摘要 西南印度洋 (SWIO) 岛屿广泛依赖进口化石能源为其经济和社会活动提供燃料。这种依赖加上能源价格波动和可能的供应链中断进一步威胁到他们可持续能源的未来。能源脆弱性的概念被用作框架，通过能源脆弱性的综合指数评估 SWIO 岛屿易受不利事件影响的程度。它表示为五个子指标的几何平均值：能源获取、能源进口依存度、一次能源组合多样性、国内生产总值（GDP）的一次能源强度和能源费用。能源绩效因 SWIO 岛屿而异，并且分析了对能源脆弱性贡献最大的维度。