The actual wind, actual solar and actual load is updated every five minutes and represent an integrated 5minute average. The intent of the display to is to show what the latest forecast data SPP has in the system at any given time. Because the data can be updated either hourly or every 5minutes, the Actual vs Forecast comparison will always be the error in the previous hour or previous 5 minutes. Beginning with Public Data release 1.19 (July 20, 2017) additional columns for solar data were added (STSF, MTSF, Actual Solar).
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