The Day Ahead Auction (DAA) is a centralised auction platform providing the release of contracted but un-nominated transportation capacity on designated pipelines and compression facilities across eastern Australia. The auction, facilitated by AEMO, enables transportation facility users to procure residual capacity on a day-ahead basis after nomination cut-off, with a zero reserve price and compressor fuel provided. AEMO operates the Capacity Trading Platform (CTP) and DAA across the east coast.
Participants may bid in to the DAA in order to procure the following services:
	• forward haul pipeline services with products offered in both directions on bi-directional pipelines;
	• interruptible backhaul services; and
	• stand-alone compression services (Moomba, Wallumbilla, Ballera, Iona).
This figure shows the number of trades occurring at each auction facility. Capacity is displayed by date of delivery (gas day).
Description of acronyms:
Transportation
	AGP - Amadeus Gas Pipeline
	BWP - Berwyndale to Wallumbilla Pipeline
	CGP - Carpentaria Gas Pipeline
	DDP - Darling Downs Pipeline
	EGP - Eastern Gas Pipeline
	MAPS - Moomba to Adelaide Pipeline System
	MSP - Moomba to Sydney Pipeline
	PCA - Port Campbell to Adelaide pipeline
	PCI - Port Campbell to Iona pipeline
	QGP - Queensland Gas Pipeline
	RBP - Roma to Brisbane Pipeline
	SEPS - South East Pipeline System
	SESA - South East South Australia Pipeline
	SWQP - South West Queensland Pipeline
	TGP - Tasmanian Gas Pipeline
	VICHUB - VicHub
	WGP - Wallumbilla to Gladstone Pipeline
Compression
	BCF - Ballera Compression Facility
	ICF - Iona Compression Facility
	MCF - Moomba Compression Facility
	WCFA - Wallumbilla Compression Facility A
	WCFB - Wallumbilla Compression Facility B