In short answer there is no simple way to get your TOU with a smart meter.
The time is set to EST but your file available from AGL is in SA time.
The meter reports your usage at least for every 30min but may also report for 15 10 or 5min (this is configurable remotely).
AGL had my meter reconfigured last year to report in 5min intervals as well as 30min intervals.
On your My Account page you will see an icon to down your usage file (for up to the last two years) this contains the following information:
So ALL THE INFORMATION YOU REQUIRE is supplied in the file.
I wrote a program to convert that data into the INDUSTRY STANDARD NEM 12 format.
The NEM file contains the data in a more usable format where the day is shown with the individual readings contained in the rows across (when viewed in a spreadsheet) which allows you to select the appropriate columns to get the data.
I wrote a second program that allows me to create reports to extract the data and get the data that you require.
Back in 2019 I tried to get users on this Neighbourhood to test both the extraction of the data from the supplied file and using the second program to create (user defined) reports.
I had no interest from members of the Neighbourhood, but there is a post where Members are requesting a Json file be made available to import the data.
You can request to AGL to get a NEM format file and they will send you one (takes up to two weeks) if requested.
If you look at the APP or My Account Page you can get a rough estimate of your usage by looking at the Daily Chart and writing down the information (this will not be accurate as they round to two decimal points).
However when you are doing this you must remember that the times they show are incorrect.
The first time shown is 12:00 AM but this is fact the 1:00AM reading as they day starts at 00:00 hours and the first report the meter sends is the usage from 00:00 to 00:30 etc.
So the first hour is from 00:00 to 01:00 so is actually the 1:00AM or 01:00 report and the last should be the 12:00PM or 00:00 report.
As I stated I have a second program that reads a NEM 12 (or 13) file and gives me the results
Here is a sample of the Result.CSV file that I generate.
You can see I produce the report in TOU format.
This report is for sub-meter E1 in 30min intervals
D/Total is the total usage (or Export if you have solar)
Peak hours are 00:00-01:00, 06:00-10:00, 15:00- 00:00 each day
Shoulder is 10:00-1500
O/Peak 01:00-06:00
So Peak is the sum of the peak hours, Shoulder is 10:00>15:00 and O/Peak is 01:00>06:00 each day
On your bill AGL just shows you the totals for the billing periods, but you can see I can see the daily usage.
Now, here is the exciting bit for you, SA Power Networks allows you to download your usage file from their website. All you have to do is create an account on their Website
https://www.sapowernetworks.com.au/your-power/manage-your-power-use/your-meter-data/
If you click on the link it will start a new page for you in your favourite web browser.
BUT, there is a catch, if you have 5min data, which AGL may have asked for, each row will contain 144 chunks of data, if you only have 30m reporting it will be 48 chunks of data. (There is 4 additional information in each row, Data Type, Date, ReadType and ReadDate).
Also the data they supply is in Eastern Standard Time and does not include DST changes. But will give a reasonable approximation of your usage.
I have requested once to get the NEM file from AGL but never checked to see they supply the file in Daylight or Standard time.
By the way the SAPN file is updated every day by about 06:00, but they also supply the file with the INTERVAL that was in use at the time and for some reason they now break up the file into different metering periods (which don't match my metering periods).
I have now given up using the SAPN file even for checking purposes. Did write a program to merge the file back into single 30min or 5min parts though.
Now if you PM (Private Message) me I will give you a GMAIL address that you can communicate with me directly and I will run a report, supplied in CSV format, for you, if you supply me your file.
I won't charge you for this, but if you want it regularly I will have to charge you.