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Constraints

Recently Published Constraints Data

Download the latest reports on binding constraints in the Day-Ahead Energy Market and during the operating day.
 

A constraint is the maximum level a transmission system facility (or facilities) can operate to respect the most restrictive of its thermal, stability, and voltage limits. A constraint becomes "binding" when it limits the power flow between locations, which can lead to dispatch of units out of economic-merit order, potentially affecting the spot price.
 

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      Constraints
      Hourly reports are available from the past seven years and five minute reports are available from the past six months. Downloads are provided as .zip files.
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      Day-Ahead Binding Constraints
      Preliminary Real-Time Binding Constraints
      Preliminary Real-Time 15-Minute Binding Constraints
      Final Real-Time 15-Minute Binding Constraints
      Final Real-Time Five-Minute Binding Constraints
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      Day-Ahead Binding Constraints
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      Description Timestamp Download
      April 20, 2019 04/19/2019 12:00 PM EDT CSV
      April 19, 2019 04/18/2019 12:00 PM EDT CSV
      April 18, 2019 04/17/2019 12:26 PM EDT CSV
      April 17, 2019 04/16/2019 12:36 PM EDT CSV
      April 16, 2019 04/15/2019 12:41 PM EDT CSV
       
      Preliminary Real-Time Binding Constraints
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      Description Timestamp Download
      Current 04/20/2019 08:00 AM EDT CSV
      April 19, 2019 04/19/2019 09:40 PM EDT CSV
      April 18, 2019 04/18/2019 11:55 PM EDT CSV
      April 17, 2019 04/17/2019 11:55 PM EDT CSV
      April 16, 2019 04/16/2019 11:05 PM EDT CSV
       
      Preliminary Real-Time 15-Minute Binding Constraints
      		 More >
      Description Timestamp Download
      Current 04/20/2019 08:27 AM EDT CSV
      April 19, 2019 04/19/2019 11:27 PM EDT CSV
      April 18, 2019 04/18/2019 11:27 PM EDT CSV
      April 17, 2019 04/17/2019 11:27 PM EDT CSV
      April 16, 2019 04/16/2019 11:27 PM EDT CSV
       
      Final Real-Time 15-Minute Binding Constraints
      		 More >
      Description Timestamp Download
      Current 04/19/2019 11:55 AM EDT CSV
      April 17, 2019 04/18/2019 11:39 AM EDT CSV
      April 16, 2019 04/17/2019 01:49 PM EDT CSV
      April 15, 2019 04/16/2019 02:30 PM EDT CSV
      April 14, 2019 04/16/2019 10:22 AM EDT CSV
       
      Final Real-Time Five-Minute Binding Constraints
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      Description Timestamp Download
      Current 04/19/2019 11:58 AM EDT CSV
      April 17, 2019 04/18/2019 11:42 AM EDT CSV
      April 16, 2019 04/17/2019 01:51 PM EDT CSV
      April 15, 2019 04/16/2019 02:32 PM EDT CSV
      April 14, 2019 04/16/2019 10:25 AM EDT CSV