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IRFMAMOUNT

IRFMAMOUNT sets out settlement amounts associated with Industrial Relations Forced Majeure events.

IRFMAMOUNTis public data.

Source

IRFMAMOUNT is obsolete; was updated with each settlement run as required.

Column Schema

IRFMID

Unique Industrial Relations Force Majeure event

SQL Type: VARCHAR2(10) Polars Type: str

This column is mandatory, and a primary key.

Examples:

  • 00W3
  • 00W4
  • 00W5
  • 00W6

PERIODID

Settlement period

SQL Type: NUMBER(4,0) Polars Type: pl.Int16

This column is mandatory, and a primary key.

Examples: 1, 336

VERSIONNO

Version number of record of event

SQL Type: NUMBER(3,0) Polars Type: pl.UInt16

This column is mandatory, and a primary key.

Example: 1

AMOUNT

Total settlement amount in $

SQL Type: NUMBER(15,5) Polars Type: pl.Float64

This column is not mandatory.

Example: 0

AUTHORISEDBY

Person authorising amount

SQL Type: VARCHAR2(15) Polars Type: str

This column is not mandatory.

AUTHORISEDDATE

Authorised date

Warning

Despite what the name suggests, this is a datetime, not a date.

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

This column is not mandatory.

Example: 2026/01/20 00:05:00

EFFECTIVEDATE

Date of event

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

This column is not mandatory.

Example: 2000/01/10 00:00:00

Note that AEMO represents dates as datetimes with a midnight time component.

LASTCHANGED

last changed

For more information, see the dedicated documentation page.

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

This column is not mandatory.

Example: 2000/01/17 15:25:17

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"

# Dates are represented as datetimes at midnight

d_fmt = "%Y/%m/%d 00:00:00"

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("AUTHORISEDDATE", "LASTCHANGED").str.strptime(pl.Datetime, dt_s_fmt),
        pl.col("EFFECTIVEDATE").str.strptime(pl.Date, d_fmt),
    )
    .cast(
        {
            "IRFMID": str,
            "PERIODID": int,  # or pl.Int16
            "VERSIONNO": int,  # or pl.UInt16
            "AMOUNT": pl.Float64,
            "AUTHORISEDBY": str,
            "EFFECTIVEDATE": pl.Date(),
        }
    )
    # Deduplicate
    # We want one row per ['IRFMID', 'PERIODID', 'VERSIONNO']
    # Tie-breaker: greatest value of ['LASTCHANGED']
    .sort(["LASTCHANGED"], descending=False)
    .unique(subset=["IRFMID", "PERIODID", "VERSIONNO"], keep="last")
)

Nemosis

This table is not yet available in Nemosis.

Example File

From PUBLIC_ARCHIVE_IRFMAMOUNT_FILE01_202609010000.zip

IRFMIDEFFECTIVEDATEVERSIONNOPERIODIDAMOUNTAUTHORISEDBYAUTHORISEDDATELASTCHANGED
00W32000/01/10 00:00:001102000/01/17 15:25:17
00W32000/01/10 00:00:001202000/01/17 15:25:17
00W32000/01/10 00:00:001302000/01/17 15:25:17
00W32000/01/10 00:00:001402000/01/17 15:25:17
00W32000/01/10 00:00:001502000/01/17 15:25:17
00W32000/01/10 00:00:001602000/01/17 15:25:17
00W32000/01/10 00:00:001702000/01/17 15:25:17
00W32000/01/10 00:00:001802000/01/17 15:25:17
00W32000/01/10 00:00:001902000/01/17 15:25:17
00W32000/01/10 00:00:0011002000/01/17 15:25:18
00W32000/01/10 00:00:0011102000/01/17 15:25:18
...

CSETP.WORLDDVD_IRFMAMOUNTAEMOPUBLIC2026/10/0915:53:04001791525184212MONTHLY_ARCHIVE001791525184212
IFORCE_MAJEUREIRFMAMOUNT1IRFMIDEFFECTIVEDATEVERSIONNOPERIODIDAMOUNTAUTHORISEDBYAUTHORISEDDATELASTCHANGED
DFORCE_MAJEUREIRFMAMOUNT100W32000/01/10 00:00:001102000/01/17 15:25:17
DFORCE_MAJEUREIRFMAMOUNT100W32000/01/10 00:00:001202000/01/17 15:25:17
DFORCE_MAJEUREIRFMAMOUNT100W32000/01/10 00:00:001302000/01/17 15:25:17
DFORCE_MAJEUREIRFMAMOUNT100W32000/01/10 00:00:001402000/01/17 15:25:17
DFORCE_MAJEUREIRFMAMOUNT100W32000/01/10 00:00:001502000/01/17 15:25:17
DFORCE_MAJEUREIRFMAMOUNT100W32000/01/10 00:00:001602000/01/17 15:25:17
DFORCE_MAJEUREIRFMAMOUNT100W32000/01/10 00:00:001702000/01/17 15:25:17
DFORCE_MAJEUREIRFMAMOUNT100W32000/01/10 00:00:001802000/01/17 15:25:17
DFORCE_MAJEUREIRFMAMOUNT100W32000/01/10 00:00:001902000/01/17 15:25:17
DFORCE_MAJEUREIRFMAMOUNT100W32000/01/10 00:00:0011002000/01/17 15:25:18
DFORCE_MAJEUREIRFMAMOUNT100W32000/01/10 00:00:0011102000/01/17 15:25:18
...
CEND OF REPORT1003

IRFMID,EFFECTIVEDATE,VERSIONNO,PERIODID,AMOUNT,AUTHORISEDBY,AUTHORISEDDATE,LASTCHANGED
00W3,"2000/01/10 00:00:00",1,1,0,,,"2000/01/17 15:25:17"
00W3,"2000/01/10 00:00:00",1,2,0,,,"2000/01/17 15:25:17"
00W3,"2000/01/10 00:00:00",1,3,0,,,"2000/01/17 15:25:17"
00W3,"2000/01/10 00:00:00",1,4,0,,,"2000/01/17 15:25:17"
00W3,"2000/01/10 00:00:00",1,5,0,,,"2000/01/17 15:25:17"
00W3,"2000/01/10 00:00:00",1,6,0,,,"2000/01/17 15:25:17"
00W3,"2000/01/10 00:00:00",1,7,0,,,"2000/01/17 15:25:17"
00W3,"2000/01/10 00:00:00",1,8,0,,,"2000/01/17 15:25:17"
00W3,"2000/01/10 00:00:00",1,9,0,,,"2000/01/17 15:25:17"
00W3,"2000/01/10 00:00:00",1,10,0,,,"2000/01/17 15:25:18"
00W3,"2000/01/10 00:00:00",1,11,0,,,"2000/01/17 15:25:18"
...

C,SETP.WORLD,DVD_IRFMAMOUNT,AEMO,PUBLIC,2026/10/09,15:53:04,001791525184212,MONTHLY_ARCHIVE,001791525184212
I,FORCE_MAJEURE,IRFMAMOUNT,1,IRFMID,EFFECTIVEDATE,VERSIONNO,PERIODID,AMOUNT,AUTHORISEDBY,AUTHORISEDDATE,LASTCHANGED
D,FORCE_MAJEURE,IRFMAMOUNT,1,00W3,"2000/01/10 00:00:00",1,1,0,,,"2000/01/17 15:25:17"
D,FORCE_MAJEURE,IRFMAMOUNT,1,00W3,"2000/01/10 00:00:00",1,2,0,,,"2000/01/17 15:25:17"
D,FORCE_MAJEURE,IRFMAMOUNT,1,00W3,"2000/01/10 00:00:00",1,3,0,,,"2000/01/17 15:25:17"
D,FORCE_MAJEURE,IRFMAMOUNT,1,00W3,"2000/01/10 00:00:00",1,4,0,,,"2000/01/17 15:25:17"
D,FORCE_MAJEURE,IRFMAMOUNT,1,00W3,"2000/01/10 00:00:00",1,5,0,,,"2000/01/17 15:25:17"
D,FORCE_MAJEURE,IRFMAMOUNT,1,00W3,"2000/01/10 00:00:00",1,6,0,,,"2000/01/17 15:25:17"
D,FORCE_MAJEURE,IRFMAMOUNT,1,00W3,"2000/01/10 00:00:00",1,7,0,,,"2000/01/17 15:25:17"
D,FORCE_MAJEURE,IRFMAMOUNT,1,00W3,"2000/01/10 00:00:00",1,8,0,,,"2000/01/17 15:25:17"
D,FORCE_MAJEURE,IRFMAMOUNT,1,00W3,"2000/01/10 00:00:00",1,9,0,,,"2000/01/17 15:25:17"
D,FORCE_MAJEURE,IRFMAMOUNT,1,00W3,"2000/01/10 00:00:00",1,10,0,,,"2000/01/17 15:25:18"
D,FORCE_MAJEURE,IRFMAMOUNT,1,00W3,"2000/01/10 00:00:00",1,11,0,,,"2000/01/17 15:25:18"
...
C,"END OF REPORT",1003

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 66 KB when zipped, 663 KB as unzipped CSV.

Deduplication and PDR Loader Configuration

The primary keys are:

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
FORCE_MAJEURE IRFMAMOUNT 1

This means that the CSV files start with metadata columns:

I,FORCE_MAJEURE,IRFMAMOUNT,1,...
D,FORCE_MAJEURE,IRFMAMOUNT,1,...

ROW_FILTER_TYPE is LASTCHANGED

Indexes

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: FORCE_MAJEURE