Energy security assessment methods: Quantifying the security co-benefits of decarbonising the Irish Energy System

Energy security is an interdisciplinary concept. Its definitions leaves it vulnerable to exploitation as a justification for energy policy instruments. The extensive literature has yet to converge to formulate a unified definition of energy security and many outline a multitude of methods of measurement, such as the Supply/Demand index applied here in modified form, but also the Hirshman-Herfindahl Index, the Shannon Index for fuel diversity, and others. However, many of these index methods do not explicitly take into account the techno-economic interdependencies which influence energy security within the energy system.