Submit Bids

Before submitting a bid, read the Capacity Transfer and Auction Procedures.

About bids

Auction participants can submit:

  • Bids up to 15 days ahead of the gas day.
  • Bids for a combination of one or more products.
  • Multiple bids for single products on a single facility.
  • A single submission (bid profile) that includes all bids for each gas day.

When a new submission is made for a gas day, the previous submission for the gas day is overridden. When making amendments to any bids included in a bid profile, you must resubmit the entire bid profile.

Bid submission process

How to submit bids

There are three ways to submit bids:

  1. Submit bids manually in the markets portal.
  2. Submit bids to the Markets Portal using a CSV file.
  3. Submit bids using an API. For help creating and submitting APIs, see Guide to Capacity Trading and Day Ahead Auction Transactions.

Bid submission rules

Product rules

Auction participants:

  1. Can include multiple Products on the same facility in a single bid, for example, a forward haul service combined with a backhaul service.
  2. Must have the receipt point and the delivery point on the same facility.
  3. Can submit multiple Products per bid (a Combinatorial Bid). For each additional product, they must specify:
  4. Receipt point
  5. Delivery point
  6. Facility
  7. Product type
  8. Contract Reference
  9. DWGM Reference (only if a DWGM delivery point)

  10. Must have a valid path between the nominated receipt point and delivery point.

  11. Cannot add a single bid more than once. If this occurs, the Markets Portal displays an error, for example: A linked bid cannot contain multiple instances of any product.

  12. Must specify a DWGM Reference applicable to the receipt or delivery point, if either point is a DWGM point.

Date range rules

For an explanation of gas day terms, see Capacity Transfer and Auction Procedures.

Auction participants:

  1. Can include a single gas day or multiple gas days in a bid.
  2. Can submit bids for gas days where they have already submitted a bid. The new bid overrides the previous bid.
  3. Cannot submit bids that include gas day D more than 15 gas days in advance of gas day D.
  4. Must submit bids that include gas day D before the cut-off time on D-1.

The bidding cut-off times are:

For details about Gas Day Harmonisation, see https://www.aemc.gov.au/rule-changes/gas-day-harmonisation

Service Reference rules

Auction participants: