Reliability of domestic power and fuel supplies is an important component that makes up Brunei Darussalam’s energy security. These supplies are very much vulnerable to any disruptions that cause power outages and insufficient domestic fuel supply. Therefore, it is important to increase the reliability of these supplies in order to lessen the country’s vulnerability and economic risks associated with interrupted power and fuel shortages. The two KPIs relevant to reliability of energy supply in Brunei Darussalam are: Power Outages: An incident of unscheduled power outages that lasts for more than one hour resulting from technical failure, human error and severe weather. This does not include scheduled power outages for maintenance purposes. The target is to reduce power outages frequency to less than 100 per year by 2017 and to less than 50 per year by 2035. Interruption in Supply of Transport Fuel: An incident whereby there is a supply interruption on gasoline (Premium 97, Super 92 and Regular 85) or diesel at more than half of the total pump stations in the respective districts in one day. The target is to achieve zero interruptions in transportation fuel supply.