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Market Participant Bids
Market Bids
Market Participants who intend to inject gas into, or withdraw gas from, the gas system must
submit bids to AEMO in order to indicate their intention to do so. Bids are submitted via the
WebExchanger application.
Bids for the current gas day are to be submitted at the beginning of each gas day, and optional
revised bids may be entered at any of the four subsequent rescheduling intervals through out
the gas day. Revised bids are entered at the discretion of the market participant – beginning
of day bids will apply to the full gas day if no revised bids are entered subsequently.
Additionally, Day Ahead, Two Days Ahead and Standing bids may also be submitted.
Participant bids contain the following information:

Bid Steps.

Minimum Daily Quantities.
Further to this, some participants will enter uplift hedge nominations, which may include:

AMDQ nominations

AMDQ Credit nominations.

AMIQ profile.

Agency Nominations (and Confirmation from recipient participants).
Market Participants can make offers to inject or withdraw gas on a gas day contingent on
specific pricing conditions. Each bid may contain up to 10 pricing steps.
If market conditions change during the day and a participant wishes to revise their position,
they may do so.
AEMO collates all bids, produces the operating and pricing schedules and publishes the
scheduling instructions to the Market Information Bulletin Board. AMDQ nominations will be
validated and processed during market settlement procedures.
VEN_DOCS-#278690-v4-Web_Exchanger_User_Guide_(AEMO).DOC AEMO
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