This study takes a first look at the vulnerabilities that characterise the Otago regional energy system. In doing so, the various supply chain components that make up the total system are described and the likely impacts of supply disruption explored so as to provide a better understanding of the risk factors affecting service delivery. With greater responsibilities being devolved to local government and territorial authorities for planning for our critical infrastructure, particular emphasis has been given to building a picture of the ways in which a secure energy supply underpins economic activity within the region, and the region’s vulnerabilities to constraints or disruption.