Day Ahead Half Hourly Demand Forecast Performance

The historic half hourly day ahead national demand forecast as published via BM reports, alongside the outturn values, adjustments for TRIAD avoidance estimates and Absolute Percentage Error (APE) for each half hour from Apr 2021 onwards. TRIAD avoidance estimates may be revised after publication if required. For data further back in time, please see the data submitted to (OFGEM for the 1B metric here:

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1 Data Files

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Day Ahead Half Hourly Demand Forecast Performance CSV 1 week ago Download (CSV) view

Additional Information

Field Value
Creator National Grid Electricity System Operator
Date Created January 19, 2022 at 2:19 PM (UTC+00:00)
Rights National Grid ESO Open Data Licence
Update frequency Monthly

cURL integration


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curl -L -s | grep path

# Get resources

curl -L

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