INSTRUCTIONSUBTYPE

Each Dispatch instruction (GD instruct) has a type and subtype. INSTRUCTIONSUBTYPE, together with INSTRUCTIONTYPE, sets out valid instruction types.

INSTRUCTIONSUBTYPE is public data, and is available to all participants.

Source

INSTRUCTIONSUBTYPE shows ad hoc updates to market configuration.

Column Schema

INSTRUCTIONSUBTYPEID

Subtype for each dispatch instruction type, for example governor off.

SQL Type: VARCHAR2(10) Polars Type: str

This column is mandatory, and a primary key.

Examples:

AGCOFF
AGCONNREG
AGCONREG
COMMENT
COMP_OFF
COMP_ON
CONST_OFF
CONST_ON
CONST_TERM
DISPLD_OFF

INSTRUCTIONTYPEID

Instruction type

SQL Type: VARCHAR2(10) Polars Type: str

This column is mandatory, and a primary key.

Examples:

AS_FC
AS_LS
AS_RGUL
AS_RGUU
AS_RP
GENERAL
NC
RTC
SD

DESCRIPTION

Description of instruction subtype

SQL Type: VARCHAR2(64) Polars Type: str

This column is not mandatory.

Examples:

AGC Dispatch Off
AGC Dispatch on non-regulating
AGC Dispatch on regulating
Change output to specified MW by specified time
Constrain Unit Off for Frequency Control
Constrain Unit On for Frequency Control
Constrain Unit Terminated
Constrain Unit off for Reactive Power
Constrain Unit on for Reactive Power
Disable Load Shed Block

LASTCHANGED

Last date and time record changed

For more information, see the dedicated documentation page.

SQL Type: DATE Polars Type: pl.Datetime()

This column is not mandatory.

Example: 1999/04/20 14:56:19

New Data Timing

Ad hoc

Code Examples

Polars

Casting is enums, categoricals etc is not essential, but may speed up parsing. Swapping int for pl.UInt16, pl.Int32 would also speed up parsing. However some of the datatypes are inferred, so they may be wrong.

This code deduplicates for you. Deduplication is normally only required across multiple months.

This code assumes that all columns are present, which may not be true for older files.

import polars as pl
import polars.selectors as cs

# e.g. "2029/03/15 00:05:00"
dt_s_fmt = "%Y/%m/%d %H:%M:%S"

csv_paths = ["SOMEFILE.CSV", "OTHERFILE.CSV"]

lf = (
    pl.concat(
        [
            pl.scan_csv(
                csv_path,  # must be unzipped beforehand
                skip_rows=1,  # skip the header
                infer_schema=False,  # much faster
            )
            .filter(cs.by_index(0) == "D")  # drop the footer
            .select(~cs.by_index(range(4)))  # drop metadata columns
            for csv_path in csv_paths
        ],
        how="diagonal_relaxed",
    )
    .with_columns(
        pl.col("LASTCHANGED").str.strptime(pl.Datetime, dt_s_fmt),
    )
    .cast({"INSTRUCTIONSUBTYPEID": str, "INSTRUCTIONTYPEID": str, "DESCRIPTION": str})
    # Deduplicate
    # We want one row per ['INSTRUCTIONSUBTYPEID', 'INSTRUCTIONTYPEID']
    # Tie-breaker: greatest value of ['LASTCHANGED']
    .sort(["LASTCHANGED"], descending=False)
    .unique(subset=["INSTRUCTIONSUBTYPEID", "INSTRUCTIONTYPEID"], keep="last")
)

Nemosis

This table is not yet available in Nemosis.

Example File

From PUBLIC_ARCHIVE_INSTRUCTIONSUBTYPE_FILE01_202609010000.zip

Table without MetadataTable with MetadataRaw Text without Metadata

INSTRUCTIONTYPEID	INSTRUCTIONSUBTYPEID	DESCRIPTION	LASTCHANGED
AS_FC	AGCONNREG	AGC Dispatch on non-regulating	1999/04/20 14:56:19
AS_FC	AGCONREG	AGC Dispatch on regulating	1999/04/20 14:56:19
AS_FC	AGCOFF	AGC Dispatch Off	1999/04/20 14:56:19
AS_FC	GOV6R	Governor on for 6 second raise	1999/04/20 14:56:19
AS_FC	GOV6L	Governor on for 6 second lower	1999/04/20 14:56:19
AS_FC	GOV60R	Governor on for 60 second raise	1999/04/20 14:56:19
AS_FC	GOV60L	Governor on for 60 second lower	1999/04/20 14:56:19
AS_FC	FCASOFF	Frequency Control Disable	1999/04/20 14:56:19
AS_RP	ONSYNCOMP	On as synchronous compensator	1999/04/20 14:56:19
AS_RP	OFFSYNCOMP	Off as synchronous compensator	1999/04/20 14:56:19
AS_RGUL	RGUL_ENAB	Rapid Gen Unit Loading Enabled	1999/04/20 14:56:19
...

C	SETP.WORLD	DVD_INSTRUCTIONSUBTYPE	AEMO	PUBLIC	2026/10/09	15:37:02	001791524222325	MONTHLY_ARCHIVE	001791524222325
I	GD_INSTRUCT	INSTRUCTIONSUBTYPE	1	INSTRUCTIONTYPEID	INSTRUCTIONSUBTYPEID	DESCRIPTION	LASTCHANGED
D	GD_INSTRUCT	INSTRUCTIONSUBTYPE	1	AS_FC	AGCONNREG	AGC Dispatch on non-regulating	1999/04/20 14:56:19
D	GD_INSTRUCT	INSTRUCTIONSUBTYPE	1	AS_FC	AGCONREG	AGC Dispatch on regulating	1999/04/20 14:56:19
D	GD_INSTRUCT	INSTRUCTIONSUBTYPE	1	AS_FC	AGCOFF	AGC Dispatch Off	1999/04/20 14:56:19
D	GD_INSTRUCT	INSTRUCTIONSUBTYPE	1	AS_FC	GOV6R	Governor on for 6 second raise	1999/04/20 14:56:19
D	GD_INSTRUCT	INSTRUCTIONSUBTYPE	1	AS_FC	GOV6L	Governor on for 6 second lower	1999/04/20 14:56:19
D	GD_INSTRUCT	INSTRUCTIONSUBTYPE	1	AS_FC	GOV60R	Governor on for 60 second raise	1999/04/20 14:56:19
D	GD_INSTRUCT	INSTRUCTIONSUBTYPE	1	AS_FC	GOV60L	Governor on for 60 second lower	1999/04/20 14:56:19
D	GD_INSTRUCT	INSTRUCTIONSUBTYPE	1	AS_FC	FCASOFF	Frequency Control Disable	1999/04/20 14:56:19
D	GD_INSTRUCT	INSTRUCTIONSUBTYPE	1	AS_RP	ONSYNCOMP	On as synchronous compensator	1999/04/20 14:56:19
D	GD_INSTRUCT	INSTRUCTIONSUBTYPE	1	AS_RP	OFFSYNCOMP	Off as synchronous compensator	1999/04/20 14:56:19
D	GD_INSTRUCT	INSTRUCTIONSUBTYPE	1	AS_RGUL	RGUL_ENAB	Rapid Gen Unit Loading Enabled	1999/04/20 14:56:19
...
C	END OF REPORT	71

INSTRUCTIONTYPEID,INSTRUCTIONSUBTYPEID,DESCRIPTION,LASTCHANGED
AS_FC,AGCONNREG,"AGC Dispatch on non-regulating","1999/04/20 14:56:19"
AS_FC,AGCONREG,"AGC Dispatch on regulating","1999/04/20 14:56:19"
AS_FC,AGCOFF,"AGC Dispatch Off","1999/04/20 14:56:19"
AS_FC,GOV6R,"Governor on for 6 second raise","1999/04/20 14:56:19"
AS_FC,GOV6L,"Governor on for 6 second lower","1999/04/20 14:56:19"
AS_FC,GOV60R,"Governor on for 60 second raise","1999/04/20 14:56:19"
AS_FC,GOV60L,"Governor on for 60 second lower","1999/04/20 14:56:19"
AS_FC,FCASOFF,"Frequency Control Disable","1999/04/20 14:56:19"
AS_RP,ONSYNCOMP,"On as synchronous compensator","1999/04/20 14:56:19"
AS_RP,OFFSYNCOMP,"Off as synchronous compensator","1999/04/20 14:56:19"
AS_RGUL,RGUL_ENAB,"Rapid Gen Unit Loading Enabled","1999/04/20 14:56:19"
...

Raw Text with Metadata

C,SETP.WORLD,DVD_INSTRUCTIONSUBTYPE,AEMO,PUBLIC,2026/10/09,15:37:02,001791524222325,MONTHLY_ARCHIVE,001791524222325
I,GD_INSTRUCT,INSTRUCTIONSUBTYPE,1,INSTRUCTIONTYPEID,INSTRUCTIONSUBTYPEID,DESCRIPTION,LASTCHANGED
D,GD_INSTRUCT,INSTRUCTIONSUBTYPE,1,AS_FC,AGCONNREG,"AGC Dispatch on non-regulating","1999/04/20 14:56:19"
D,GD_INSTRUCT,INSTRUCTIONSUBTYPE,1,AS_FC,AGCONREG,"AGC Dispatch on regulating","1999/04/20 14:56:19"
D,GD_INSTRUCT,INSTRUCTIONSUBTYPE,1,AS_FC,AGCOFF,"AGC Dispatch Off","1999/04/20 14:56:19"
D,GD_INSTRUCT,INSTRUCTIONSUBTYPE,1,AS_FC,GOV6R,"Governor on for 6 second raise","1999/04/20 14:56:19"
D,GD_INSTRUCT,INSTRUCTIONSUBTYPE,1,AS_FC,GOV6L,"Governor on for 6 second lower","1999/04/20 14:56:19"
D,GD_INSTRUCT,INSTRUCTIONSUBTYPE,1,AS_FC,GOV60R,"Governor on for 60 second raise","1999/04/20 14:56:19"
D,GD_INSTRUCT,INSTRUCTIONSUBTYPE,1,AS_FC,GOV60L,"Governor on for 60 second lower","1999/04/20 14:56:19"
D,GD_INSTRUCT,INSTRUCTIONSUBTYPE,1,AS_FC,FCASOFF,"Frequency Control Disable","1999/04/20 14:56:19"
D,GD_INSTRUCT,INSTRUCTIONSUBTYPE,1,AS_RP,ONSYNCOMP,"On as synchronous compensator","1999/04/20 14:56:19"
D,GD_INSTRUCT,INSTRUCTIONSUBTYPE,1,AS_RP,OFFSYNCOMP,"Off as synchronous compensator","1999/04/20 14:56:19"
D,GD_INSTRUCT,INSTRUCTIONSUBTYPE,1,AS_RGUL,RGUL_ENAB,"Rapid Gen Unit Loading Enabled","1999/04/20 14:56:19"
...
C,"END OF REPORT",71

Availability

Visibility: Public

This table is in the public monthly MMSDM archive.

I have collated the list of all those files into one place, in this CSV metadata file. (Columns year, month, url, compressed_size in bytes).

The earliest available data is month 1 of 2015. The most recent available data is month 9 of 2026.

Every month in between has a file. (No gaps.)

Data Size

Each year of data is approximately 16 KB when zipped, 160 KB as unzipped CSV.

Deduplication and PDR Loader Configuration

The primary keys are:

INSTRUCTIONSUBTYPEID
INSTRUCTIONTYPEID

The transaction type is "INSERT-UPDATE", which means that you will likely see duplicate data with different values.

You should deduplicate by sorting based on LASTCHANGED, within each group of primary keys.

PDR Loader configuration is:

Report Name	Report Subtype	Version
GD_INSTRUCT	INSTRUCTIONSUBTYPE	1

This means that the CSV files start with metadata columns:

I,GD_INSTRUCT,INSTRUCTIONSUBTYPE,1,...
D,GD_INSTRUCT,INSTRUCTIONSUBTYPE,1,...

ROW_FILTER_TYPE is LASTCHANGED

Indexes

LASTCHANGED

Links

This page as JSON (schema documented here, but may change)

Download a JSON Schema specification for this table.

Official AEMO schema documentation

Other Information

Package: GD_INSTRUCT