INT314 - Bid Stack

Trigger type	Time triggered
Published	Daily at 10:00
Audience	Public
Output file name	int314_v[n]_bid_stack_[p]~yyyymmddhhmmss.csv

Report purpose

This report is a public report that is published on both the MIBB Market Information Bulletin Board. The IT interface through which AEMO communicates with gas market participants. and AEMO Australian Energy Market Operator Website. It provides the bid stack data used in the scheduling process for the last scheduling horizon of each gas day in the past year.

It provides Participants with historical trend information that combined with other public information enables Participants to gain an insight to the scheduling outcomes for that horizon in the AEMO scheduling process.

Audience notes

This report provides historical bid stack data for each gas day in the previous one year (rolling), commencing with the previous gas day.

This report contains bid stack details, which are constructed by AEMO based on:

• Bid step quantities (up to 10)

• Minimum daily quantity (MDQ) submitted as part of the bid

• Hourly quantity constraints requested by Market participants and accredited by AEMO

As a result of the application of the confidential accreditation values stored by AEMO the bid stack details may not exactly match bids submitted by Market participants.

Content notes

bid_step details are constructed by AEMO based on MDQ details entered as part of the bid and the structure of bid steps themselves.

bid_step 0 is associated with:

• a $0-price step for an injection bid

• a VOLL-price step for a withdrawal bid

In general bid_step 0 will reflect the MDQ entered.

bid_qty_gj reflects the cumulative quantities as submitted by the Market participant.

step_qty_gj is a calculated value that is the difference between 2 consecutive bid_qty_gj values. For example, if bid step 2 is for 2,500GJ and bid step 3 is for 3,000GJ, then the step_qty_gj associated with bid_step = 3 is 500GJ.

Data content

Name	Data Type	No Nulls	Primary Key	CQ	Comments
bid_id	integer	True	True	N	Bid Id.
gas_date	varchar(20)	True	True	N	Gas date. Dd mmm yyyy
market_participant_id	Int	True	True	N	Company Id of Bid owner
company_name	Varchar(100)	False	False		Company Name of Bid owner.
mirn	Char(10)	True	True	N	Phy_mirn (commissioned =’Y’, bidding =’Y’)
bid_step	Int	True	True		Step (0 – 10)
bid_price	numeric(9,4)	False	False		Dollar price per GJ for bid.
bid_qty_gj	numeric(18,9)	False	False		MDQ for step.
step_qty_gj	numeric(18,9)	False	False		Incremental MDQ for step
inject_withdraw	Char(1)	True	False	N	I or W Flag
current_date	varchar(20)	True	False	N	Report generation date. dd mmm yyyy hh:mm:ss