Day-Ahead Market

    The Day-Ahead Market (DAM) is a voluntary, financially-binding forward energy market. The DAM matches willing buyers and sellers, subject to network security and other constraints, whereby energy is co-optimized with Ancillary Services and certain Congestion Revenue Rights. It provides a platform to hedge congestion costs in the day-ahead of the Operating Day, and instruments to mitigate the risk of price volatility in Real-Time.

    Ancillary Service Plans

    Day-Ahead Market Results Displays

    Day-Ahead Market Results Reports

    • Aggregated Ancillary Service Offer Curve New_win
      View the aggregated Ancillary Service Offer Curve for the last 30 days on a daily basis which includes the following AS types: OFFNS, ONNS, REGDN, REGUP, RRSGN, RRSLD, & RRSNC.
    • DAM Clearing Prices for CapacityNew_win
      View the Market Clearing Prices for Capacity for all Ancillary Services from the Day-Ahead Market for the last thirty days on a daily basis.
    • DAM De-Energized Settlement Points in Base CaseNew_win
      View the list of settlement points that were de-energized in the base case of the Day Ahead Market.
    • DAM Electrically Similar Settlement PointsNew_win
      View the current list of all DAM Electrically Similar Settlement Points (ESSPs) that are used for market processes and transactions. Per protocols, certain transaction are not allowed between ESSPs. In order to support this protocol requirement, a list of ESSPs are posted prior to 0600 as a study for DAM, and also after DAM completion to reflect the ESSP list that was enforced in the DAM solution (recognizing that the network topology and outage changes can add or remove settlement points from the ESSP list on an intra-day basis).
    • DAM Hourly LMPsNew_win
      View the Hourly Locational Marginal Prices per electrical bus from the Day-Ahead Market for the last thirty days on a daily basis.
    • DAM PTP Obligation and Option Results by Settlement PointNew_win
      View the total amount of PTP Obligation Bids awarded and CRR Offers not awarded in the Day-Ahead Market per Settlement Point where the Settlement Point of the bid or offer is either the Source or the Sink for the last thirty days on a daily basis.
    • DAM Settlement Point PricesNew_win
      View the Settlement Point Prices for all Resource Nodes, Load Zones, and Trading Hubs from the Day-Ahead Market for the last thirty days on a daily basis.
    • DAM Shadow PricesNew_win
      View active and binding constraints as well as the associated shadow prices from the Day-Ahead Market for the last thirty days on a daily basis.
    • DAM System LambdaNew_win
      View the System Lambda of each successful DAM.
    • DAM Total Energy PurchasedNew_win
      View the total amount of energy purchased via valid energy bids per Settlement Point from the Day-Ahead Market for the last thirty days on a daily basis.
    • DAM Total Energy SoldNew_win
      View the total amount of energy sold via three-part supply offers, energy offer curves, and energy-only offers per Settlement Point from the Day-Ahead Market for the last thirty days on a daily basis.
    • Day Ahead Point-to-Point Option Price ReportNew_win
      View the Point-to-Point Option price in dollars identified by Source & Sink Settlement Point calculated by MMS from the Day-Ahead Market for the last thirty days on a daily basis.
    • Total Ancillary Service OffersNew_win
      View the total quantity in MW of Offers per Ancillary Service per hour from the Day-Ahead Market for the last thirty days on a daily basis which includes the following AS types: REGDN, REGUP, RRS, & NSPIN.

    Day-Ahead Supporting Information

    • Electrical Bus Mapping for Heuristic PricingNew_win
      This report shows the heuristic pricing associations on a daily basis that are used in the market solutions for Day-Ahead Market (DAM) and Real-Time Market (RTM). This posting helps the market's understanding of the methodology and values of the published prices.
    • Load Distribution FactorsNew_win
      Load forecast distribution factors from which Market Participants can calculate Load at the Electrical Bus level by hour for the next seven days.
    • Settlement Points List and Electrical Buses MappingNew_win
      View the current list of all Settlement Points that may be used for market processes and transactions.

    System Conditions

    • Weather AssumptionsNew_win
      View forecasted hourly temperature values for the next day for each weather zone.
    • Wind Power Production - Hourly Averaged Actual and Forecasted ValuesNew_win
      This report is posted every hour and includes System-wide and Regional actual hourly averaged wind power production, STWPF, WGRPP and COP HSLs for On-Line WGRs for a rolling historical 48-hour period as well as the System-wide and Regional STWPF, WGRPP and COP HSLs for On-Line WGRs for the rolling future 168-hour period.

    Key Documents