Units for Aggregated Data
When selecting data in NEM-Review you can combine a time resolution (trading interval, daily, monthly, yearly, etc) with an aggregation method (mean, minimum, maximum, median or total). This allows you to select daily minimum, yearly total, quarterly mean (etc) data from any of the datasets in NEM-Review.
For all datasets the aggregated mean, min, max or median will be expressed in the same units as the raw trading data. However for most data sets the aggregated total will have different units.
| Data Sets | Raw data units | Total data units |
|
Pool price,
Cumulative price
|
$/MWh
This is the cost of consuming 1MW for an hour (an hourly rate given in half hourly increments).
|
$/MW-[resolution]
Where [resolution] is day, week, month, year (etc) according to the selected time resolution.
Aggregated daily total pool price is calculated by summing the pool price for all 30-min trading intervals in each day (48 total), and dividing the sum by 2 (to account for the hourly rate). The resulting data is in $/MW-day, the cost of consuming 1MW for a whole day.
Similarly, weekly total pool price is in $/MW-week, monthly total pool price is in $/MW-month, etc.
|
Demand,
Generation,
Interconnector flow,
FCAS requirements | MW | MWh |
| Spot revenue |
$/hour
This is the hourly revenue rate for the generating unit in the current 30 minute trading interval.
|
$
The total revenue obtained by the generating unit over each day/week/month/etc.
Daily/weekly/monthly/etc total spot revenue is calculated by summing the raw data for all 30-minute trading periods within each day/week/month, and dividing the sum by 2 (to account for the hourly rate).
|
| Energy use | Joules/hour | Joules |
| Coal burnt | tonnes/hour | tonnes |
| Greenhouse emissions | tonnes/hour | tonnes |