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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
      July 24, 2019 07/23/2019 12:16 PM EDT CSV
      July 23, 2019 07/22/2019 12:16 PM EDT CSV
      July 22, 2019 07/21/2019 12:06 PM EDT CSV
      July 21, 2019 07/20/2019 12:11 PM EDT CSV
      July 19, 2019 07/18/2019 12:00 PM EDT CSV
       
      Preliminary Real-Time Binding Constraints
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      Description Timestamp Download
      Current 07/23/2019 11:55 AM EDT CSV
      July 22, 2019 07/22/2019 03:00 PM EDT CSV
      July 21, 2019 07/21/2019 11:20 PM EDT CSV
      July 20, 2019 07/20/2019 11:00 PM EDT CSV
      July 19, 2019 07/19/2019 11:00 AM EDT CSV
       
      Preliminary Real-Time 15-Minute Binding Constraints
      		 More >
      Description Timestamp Download
      Current 07/23/2019 10:28 PM EDT CSV
      July 22, 2019 07/22/2019 11:25 PM EDT CSV
      July 21, 2019 07/21/2019 11:28 PM EDT CSV
      July 20, 2019 07/20/2019 11:28 PM EDT CSV
      July 19, 2019 07/19/2019 11:28 PM EDT CSV
       
      Final Real-Time 15-Minute Binding Constraints
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      Description Timestamp Download
      Current 07/23/2019 11:08 AM EDT CSV
      July 21, 2019 07/22/2019 12:14 PM EDT CSV
      July 20, 2019 07/22/2019 12:13 PM EDT CSV
      July 19, 2019 07/22/2019 12:12 PM EDT CSV
      July 18, 2019 07/19/2019 10:43 AM EDT CSV
       
      Final Real-Time Five-Minute Binding Constraints
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      Description Timestamp Download
      Current 07/23/2019 11:10 AM EDT CSV
      July 21, 2019 07/22/2019 12:20 PM EDT CSV
      July 20, 2019 07/22/2019 12:18 PM EDT CSV
      July 19, 2019 07/22/2019 12:15 PM EDT CSV
      July 18, 2019 07/19/2019 10:47 AM EDT CSV