Operational Demand in a region is demand that is met by local scheduled generating units, semi-scheduled generating units, and non-scheduled intermittent generating units of aggregate capacity ≥ 30 MW, and by generation imports to the region. It excludes the demand met by non-scheduled non-intermittent generating units, non-scheduled intermittent generating units of aggregate capacity < 30 MW, exempt generation (e.g. rooftop solar, gas tri-generation, very small wind farms, etc), and demand of local scheduled loads. The exceptions are Yarwun, Angaston, Port Stanvac, and Morton’s Lane which are included.

Probability of Exceedance (POE) demand is a generalised approach to defining the probability of exceedance of electricity demand forecasts. The demand is expressed as the probability the forecast would be met or exceeded, e.g. a 50% POE demand implies there is a 50% probability of the forecast being met or exceeded.

Daily Actual Operational Demand Update - filename: public_actual_operational_demand_update_daily*.csv (approx. size 2Mb)
This file is published when there is a retrospective change made by AEMO to the actual operational demand data record (for example: due to SCADA data quality). Data published here overrides the original data published in real-time (Half-hourly Actual Operational Demand and Daily Actual Operational Demand files) for the same trading interval.

Half-hourly Actual Operational Demand  - filename: public_actual_operational_demand_hh*.csv (approx. size 200kb)
This file contains the historical operational demand information (30-minute average of 4-second instantaneous demand) by region for the previous trading interval.

Daily Actual Operational Demand  - filename: public_actual_operational_demand_daily*.csv (approx. size 2Mb)
This file contains the historical operational demand information (30-minute average of 4-second instantaneous demand) by region covering all trading intervals of the previous trading day.

Half-hourly Forecast Operational Demand  - filename: public_forecast_operational_demand_hh*.csv (approx. size 31Mb)
This file contains the 30-minute forecast operational demand information by region covering from the pre-dispatch timeframe. Three types of POE demand forecasts (10%, 50% and 90% POE) are reported under the columns headed ‘OPERATIONAL_DEMAND_POE10’, ‘OPERATIONAL_DEMAND_POE50’, and ‘OPERATIONAL_DEMAND_POE90’, respectively.

Current files 

• two week rolling window for the Half-hourly Actual and Forecast Operational Demand files
• two month rolling window for the Daily Actual Operational Demand files
• all Daily Actual Operational Demand Update files

Archive files

• weekly files for the Half-hourly Actual and Forecast Operational Demand
• monthly files for the Daily Actual Operational Demand

Note:

The National Electricity Market registration classification of Yarwun Power Station Unit 1 (dispatchable unit ID: YARWUN_1) is market non-scheduled generating unit. However, it is a condition of the registration of this unit that the Registered Participant complies with some of the obligations of a Scheduled Generator. This unit is dispatched as scheduled generating unit with respect to its dispatch offers, targets and generation outputs. Accordingly, information about YARWUN_1 is reported as scheduled generating unit information.

Disclaimer

This data is provided for information only and is not intended for commercial use. AEMO does not guarantee the accuracy of the data or its availability at all times.