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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
      September 22, 2019 09/21/2019 12:41 PM EDT CSV
      September 21, 2019 09/20/2019 12:36 PM EDT CSV
      September 20, 2019 09/19/2019 12:26 PM EDT CSV
      September 19, 2019 09/18/2019 12:36 PM EDT CSV
      September 18, 2019 09/17/2019 12:21 PM EDT CSV
       
      Preliminary Real-Time Binding Constraints
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      Description Timestamp Download
      Current 09/21/2019 06:00 PM EDT CSV
      September 20, 2019 09/20/2019 11:35 PM EDT CSV
      September 19, 2019 09/19/2019 11:55 PM EDT CSV
      September 18, 2019 09/18/2019 11:25 PM EDT CSV
      September 17, 2019 09/17/2019 04:50 PM EDT CSV
       
      Preliminary Real-Time 15-Minute Binding Constraints
      		 More >
      Description Timestamp Download
      Current 09/21/2019 09:43 PM EDT CSV
      September 20, 2019 09/20/2019 11:25 PM EDT CSV
      September 19, 2019 09/19/2019 11:25 PM EDT CSV
      September 18, 2019 09/18/2019 11:28 PM EDT CSV
      September 17, 2019 09/17/2019 11:28 PM EDT CSV
       
      Final Real-Time 15-Minute Binding Constraints
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      Description Timestamp Download
      Current 09/20/2019 11:46 AM EDT CSV
      September 18, 2019 09/19/2019 11:09 AM EDT CSV
      September 17, 2019 09/18/2019 11:51 AM EDT CSV
      September 16, 2019 09/17/2019 11:33 AM EDT CSV
      September 15, 2019 09/16/2019 03:54 PM EDT CSV
       
      Final Real-Time Five-Minute Binding Constraints
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      Description Timestamp Download
      Current 09/20/2019 11:49 AM EDT CSV
      September 18, 2019 09/19/2019 11:11 AM EDT CSV
      September 17, 2019 09/18/2019 11:54 AM EDT CSV
      September 16, 2019 09/17/2019 11:35 AM EDT CSV
      September 15, 2019 09/16/2019 03:58 PM EDT CSV