Powerlink submits its Revenue Proposal to the Australian Energy Regulator (AER) every five years. The AER is responsible for the economic regulation of prescribed revenue received by Transmission Network Service Providers (TNSPs) under chapter 6A of the National Electricity Rules. Powerlink’s Revenue Proposal outlines its forecast revenue requirements to provide an efficient, safe and reliable transmission service. The AER assesses this proposal before setting Powerlink’s Maximum Allowable Revenue (MAR) for the following five-year regulatory period.