Some real time SCADA data was not loaded into the full-history hosted MMS database between approx 11:40AM and 12:05PM NEM time. This affected the timely data presentation in some NEMreview trends and generation of up to date Live Supply Demand data. NEMwatch fuel type data may also have been affected during the time period.

The cause was a backlog of older market data files being back-filled into the database at the time, which consequently blocked real-time inserts of SCADA data.

We are reviewing our procedures for back-filling data to avoid a recurrence of this kind of issue.