All authorised electricity and gas retailers and distributors that supply small retail customers in NSW must be members of EWON. The legislative provisions which state this can be found at:
- National Energy Retail Law (NSW) Section 86 for electricity and gas retailers and distributors
- Electricity Supply Act 1995 (NSW) Section 96C for electricity distributors
- Gas Supply Act 1996 (NSW) Section 11A for gas distributors
The Australian Energy Regulator (AER) oversees the authorisation of electricity and gas retailers, pricing and compliance of energy providers in NSW.
The Australian Energy Market Operator (AEMO) oversees the operation of the national energy market and all electricity and gas distributors in NSW must register with AEMO.
The Australian Energy Market Commission (AEMC) advises government on the energy market and sets the rules to protect consumers.