AEMO is required to publish distribution loss factors (DLFs) by 1 April each year, to be applied for the next financial year. The DLFs must be:

1. Calculated initially and reviewed annually by the appropriate Network Service Provider (NSP).
2. Approved by the Australian Energy Regulator (AER).
3. Provided by the NSP to AEMO and published by AEMO by 1 April each year.