Deadlines, versions and clock changes

The rules that catch people out.

The cutoff

For every market, forecasts for a delivery day must arrive by , whatever the market's own time zone. That's ten minutes before the earliest day-ahead auction results. The time your complete request arrives counts, not a timestamp you send, and anything later is rejected. Signed in, the countdown shows the time left.

Replacing a forecast

You can send again as often as you like before the cutoff. Each send becomes a new version (v1, v2…), only the latest one is scored, and the earlier ones stay in your history. Before the cutoff you can also cancel a pending forecast; it stays in your history as cancelled.

Clock-change days

Periods are matched by their UTC start time, which is how the two 02:00 hours are told apart.

Prices and limits

These are the limits the service enforces right now, for the website and the API alike.