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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
      May 22, 2019 05/21/2019 12:46 PM EDT CSV
      May 21, 2019 05/20/2019 12:36 PM EDT CSV
      May 20, 2019 05/19/2019 12:56 PM EDT CSV
      May 19, 2019 05/18/2019 12:41 PM EDT CSV
      May 18, 2019 05/17/2019 12:41 PM EDT CSV
       
      Preliminary Real-Time Binding Constraints
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      Description Timestamp Download
      Current 05/22/2019 07:25 AM EDT CSV
      May 21, 2019 05/21/2019 11:45 PM EDT CSV
      May 20, 2019 05/20/2019 11:55 PM EDT CSV
      May 19, 2019 05/19/2019 11:55 PM EDT CSV
      May 18, 2019 05/18/2019 11:55 PM EDT CSV
       
      Preliminary Real-Time 15-Minute Binding Constraints
      		 More >
      Description Timestamp Download
      Current 05/22/2019 07:12 AM EDT CSV
      May 21, 2019 05/21/2019 11:27 PM EDT CSV
      May 20, 2019 05/20/2019 11:27 PM EDT CSV
      May 19, 2019 05/19/2019 11:27 PM EDT CSV
      May 18, 2019 05/18/2019 11:27 PM EDT CSV
       
      Final Real-Time 15-Minute Binding Constraints
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      Description Timestamp Download
      Current 05/21/2019 10:34 AM EDT CSV
      May 19, 2019 05/20/2019 11:47 AM EDT CSV
      May 18, 2019 05/20/2019 11:43 AM EDT CSV
      May 17, 2019 05/20/2019 11:42 AM EDT CSV
      May 16, 2019 05/17/2019 11:12 AM EDT CSV
       
      Final Real-Time Five-Minute Binding Constraints
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      Description Timestamp Download
      Current 05/21/2019 10:36 AM EDT CSV
      May 19, 2019 05/20/2019 11:50 AM EDT CSV
      May 18, 2019 05/20/2019 11:47 AM EDT CSV
      May 17, 2019 05/20/2019 11:44 AM EDT CSV
      May 16, 2019 05/17/2019 11:14 AM EDT CSV