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INTERMITTENT_CLUSTER_AVAIL

A submission of expected plant availability for an intermittent generating unit cluster, by Trading Day and Trading Interval.

Column Schema

CLUSTERID

Unique Cluster Identifier for this cluster within the DUID

SQL Type: VARCHAR2(20) Polars Type: str

This column is mandatory, and a primary key.

Examples:

  • BALDHWF_C1
  • BANGOWF1C1
  • BANGOWF1C2
  • BANGOWF1C3
  • BANGOWF2C1
  • BANGOWF2C2

DUID

Unique Identifier of Dispatchable Unit

Warning

This column may contain funny characters such as / (slash) or # (hash). This may break hive-style partitioning.

For more information, see the dedicated documentation page.

SQL Type: VARCHAR2(20) Polars Type: pl.Categorical

This column is mandatory, and a primary key.

Examples:

  • BALDHWF1
  • BANGOWF1
  • BANGOWF2
  • W/HOE#2

OFFERDATETIME

Date and Time when this cluster availability submission was loaded

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

This column is mandatory, and a primary key.

Example: 2026/08/23 20:52:19

PERIODID

Trading interval number (1…48) within this TRADINGDATE for which ELEMENTS_UNAVAILABLE applies

SQL Type: NUMBER(3,0) Polars Type: pl.Int16

This column is mandatory, and a primary key.

Examples: 1, 48

TRADINGDATE

The trading day to which the availability submission applies

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

This column is mandatory, and a primary key.

Example: 2026/09/02 00:00:00

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

ELEMENTS_AVAILABLE

Number of elements within this CLUSTERID (turbines for wind, or inverters for solar) that are available for this TRADINGDATE and PERIODID (scheduled maintenance in AWEFS/ASEFS). Value between 0 and the registered Number of Cluster Elements. Value = 0 means no elements available

SQL Type: NUMBER(5,0) Polars Type: pl.Int32

This column is not mandatory.

Examples: 6, 52

ELEMENTS_UNAVAILABLE

Number of elements within this CLUSTERID (turbines for wind, or inverters for solar) that are not available for this TRADINGDATE and PERIODID (scheduled maintenance in AWEFS/ASEFS). Value between 0 and the registered Number of Cluster Elements.Value = 0 means no elements unavailable

SQL Type: NUMBER(5,0) Polars Type: pl.Int32

This column is not mandatory.

Examples: 0, 1, 3

New Data Timing

On participant data submission

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("OFFERDATETIME").str.strptime(pl.Datetime, dt_s_fmt),
        pl.col("TRADINGDATE").str.strptime(pl.Date, d_fmt),
    )
    .cast(
        {
            "CLUSTERID": str,
            "DUID": pl.Categorical,
            "PERIODID": int,  # or pl.Int16
            "TRADINGDATE": pl.Date(),
            "ELEMENTS_AVAILABLE": int,  # or pl.Int32
            "ELEMENTS_UNAVAILABLE": int,  # or pl.Int32
        }
    )
    # Deduplicate
    # We want one row per ['CLUSTERID', 'DUID', 'OFFERDATETIME', 'PERIODID', 'TRADINGDATE']
    .unique(
        subset=["CLUSTERID", "DUID", "OFFERDATETIME", "PERIODID", "TRADINGDATE"],
        keep="any",
    )
)

Nemosis

This table is not yet available in Nemosis.

Example File

From PUBLIC_ARCHIVE_INTERMITTENT_CLUSTER_AVAIL_FILE01_202609010000.zip

TRADINGDATEDUIDOFFERDATETIMECLUSTERIDPERIODIDELEMENTS_UNAVAILABLEELEMENTS_AVAILABLE
2026/09/02 00:00:00BALDHWF12026/08/26 13:56:23BALDHWF_C11052
2026/09/02 00:00:00BALDHWF12026/08/26 13:56:23BALDHWF_C12052
2026/09/02 00:00:00BALDHWF12026/08/26 13:56:23BALDHWF_C13052
2026/09/02 00:00:00BALDHWF12026/08/26 13:56:23BALDHWF_C14052
2026/09/02 00:00:00BALDHWF12026/08/26 13:56:23BALDHWF_C15052
2026/09/02 00:00:00BALDHWF12026/08/26 13:56:23BALDHWF_C16052
2026/09/02 00:00:00BALDHWF12026/08/26 13:56:23BALDHWF_C17052
2026/09/02 00:00:00BALDHWF12026/08/26 13:56:23BALDHWF_C18052
2026/09/02 00:00:00BALDHWF12026/08/26 13:56:23BALDHWF_C19052
2026/09/02 00:00:00BALDHWF12026/08/26 13:56:23BALDHWF_C110052
2026/09/02 00:00:00BALDHWF12026/08/26 13:56:23BALDHWF_C111052
...

CSETP.WORLDDVD_INTERMITTENT_CLUSTER_AVAILAEMOPUBLIC2026/10/0915:37:04001791524224375MONTHLY_ARCHIVE001791524224375
IDEMANDINTERMITTENT_CLUSTER_AVAIL2TRADINGDATEDUIDOFFERDATETIMECLUSTERIDPERIODIDELEMENTS_UNAVAILABLEELEMENTS_AVAILABLE
DDEMANDINTERMITTENT_CLUSTER_AVAIL22026/09/02 00:00:00BALDHWF12026/08/26 13:56:23BALDHWF_C11052
DDEMANDINTERMITTENT_CLUSTER_AVAIL22026/09/02 00:00:00BALDHWF12026/08/26 13:56:23BALDHWF_C12052
DDEMANDINTERMITTENT_CLUSTER_AVAIL22026/09/02 00:00:00BALDHWF12026/08/26 13:56:23BALDHWF_C13052
DDEMANDINTERMITTENT_CLUSTER_AVAIL22026/09/02 00:00:00BALDHWF12026/08/26 13:56:23BALDHWF_C14052
DDEMANDINTERMITTENT_CLUSTER_AVAIL22026/09/02 00:00:00BALDHWF12026/08/26 13:56:23BALDHWF_C15052
DDEMANDINTERMITTENT_CLUSTER_AVAIL22026/09/02 00:00:00BALDHWF12026/08/26 13:56:23BALDHWF_C16052
DDEMANDINTERMITTENT_CLUSTER_AVAIL22026/09/02 00:00:00BALDHWF12026/08/26 13:56:23BALDHWF_C17052
DDEMANDINTERMITTENT_CLUSTER_AVAIL22026/09/02 00:00:00BALDHWF12026/08/26 13:56:23BALDHWF_C18052
DDEMANDINTERMITTENT_CLUSTER_AVAIL22026/09/02 00:00:00BALDHWF12026/08/26 13:56:23BALDHWF_C19052
DDEMANDINTERMITTENT_CLUSTER_AVAIL22026/09/02 00:00:00BALDHWF12026/08/26 13:56:23BALDHWF_C110052
DDEMANDINTERMITTENT_CLUSTER_AVAIL22026/09/02 00:00:00BALDHWF12026/08/26 13:56:23BALDHWF_C111052
...
CEND OF REPORT1003

TRADINGDATE,DUID,OFFERDATETIME,CLUSTERID,PERIODID,ELEMENTS_UNAVAILABLE,ELEMENTS_AVAILABLE
"2026/09/02 00:00:00",BALDHWF1,"2026/08/26 13:56:23",BALDHWF_C1,1,0,52
"2026/09/02 00:00:00",BALDHWF1,"2026/08/26 13:56:23",BALDHWF_C1,2,0,52
"2026/09/02 00:00:00",BALDHWF1,"2026/08/26 13:56:23",BALDHWF_C1,3,0,52
"2026/09/02 00:00:00",BALDHWF1,"2026/08/26 13:56:23",BALDHWF_C1,4,0,52
"2026/09/02 00:00:00",BALDHWF1,"2026/08/26 13:56:23",BALDHWF_C1,5,0,52
"2026/09/02 00:00:00",BALDHWF1,"2026/08/26 13:56:23",BALDHWF_C1,6,0,52
"2026/09/02 00:00:00",BALDHWF1,"2026/08/26 13:56:23",BALDHWF_C1,7,0,52
"2026/09/02 00:00:00",BALDHWF1,"2026/08/26 13:56:23",BALDHWF_C1,8,0,52
"2026/09/02 00:00:00",BALDHWF1,"2026/08/26 13:56:23",BALDHWF_C1,9,0,52
"2026/09/02 00:00:00",BALDHWF1,"2026/08/26 13:56:23",BALDHWF_C1,10,0,52
"2026/09/02 00:00:00",BALDHWF1,"2026/08/26 13:56:23",BALDHWF_C1,11,0,52
...

C,SETP.WORLD,DVD_INTERMITTENT_CLUSTER_AVAIL,AEMO,PUBLIC,2026/10/09,15:37:04,001791524224375,MONTHLY_ARCHIVE,001791524224375
I,DEMAND,INTERMITTENT_CLUSTER_AVAIL,2,TRADINGDATE,DUID,OFFERDATETIME,CLUSTERID,PERIODID,ELEMENTS_UNAVAILABLE,ELEMENTS_AVAILABLE
D,DEMAND,INTERMITTENT_CLUSTER_AVAIL,2,"2026/09/02 00:00:00",BALDHWF1,"2026/08/26 13:56:23",BALDHWF_C1,1,0,52
D,DEMAND,INTERMITTENT_CLUSTER_AVAIL,2,"2026/09/02 00:00:00",BALDHWF1,"2026/08/26 13:56:23",BALDHWF_C1,2,0,52
D,DEMAND,INTERMITTENT_CLUSTER_AVAIL,2,"2026/09/02 00:00:00",BALDHWF1,"2026/08/26 13:56:23",BALDHWF_C1,3,0,52
D,DEMAND,INTERMITTENT_CLUSTER_AVAIL,2,"2026/09/02 00:00:00",BALDHWF1,"2026/08/26 13:56:23",BALDHWF_C1,4,0,52
D,DEMAND,INTERMITTENT_CLUSTER_AVAIL,2,"2026/09/02 00:00:00",BALDHWF1,"2026/08/26 13:56:23",BALDHWF_C1,5,0,52
D,DEMAND,INTERMITTENT_CLUSTER_AVAIL,2,"2026/09/02 00:00:00",BALDHWF1,"2026/08/26 13:56:23",BALDHWF_C1,6,0,52
D,DEMAND,INTERMITTENT_CLUSTER_AVAIL,2,"2026/09/02 00:00:00",BALDHWF1,"2026/08/26 13:56:23",BALDHWF_C1,7,0,52
D,DEMAND,INTERMITTENT_CLUSTER_AVAIL,2,"2026/09/02 00:00:00",BALDHWF1,"2026/08/26 13:56:23",BALDHWF_C1,8,0,52
D,DEMAND,INTERMITTENT_CLUSTER_AVAIL,2,"2026/09/02 00:00:00",BALDHWF1,"2026/08/26 13:56:23",BALDHWF_C1,9,0,52
D,DEMAND,INTERMITTENT_CLUSTER_AVAIL,2,"2026/09/02 00:00:00",BALDHWF1,"2026/08/26 13:56:23",BALDHWF_C1,10,0,52
D,DEMAND,INTERMITTENT_CLUSTER_AVAIL,2,"2026/09/02 00:00:00",BALDHWF1,"2026/08/26 13:56:23",BALDHWF_C1,11,0,52
...
C,"END OF REPORT",1003

Availability

Visibility: Private & Public Next-Day

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 8 of 2024. 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 210 MB when zipped, 2 GB as unzipped CSV.

Deduplication and PDR Loader Configuration

The primary keys are:

The transaction type is "insert", which means that you will usually not see duplicate data. If you do, you can deduplicate based on the primary keys, without sorting first. Rows from different files with the same primary keys should have the same values.

PDR Loader configuration is:

Report Name Report Subtype Version
DEMAND INTERMITTENT_CLUSTER_AVAIL 1
DEMAND INTERMITTENT_CLUSTER_AVAIL 2

This means that the CSV files start with metadata columns:

I,DEMAND,INTERMITTENT_CLUSTER_AVAIL,1,...
D,DEMAND,INTERMITTENT_CLUSTER_AVAIL,1,...

or

I,DEMAND,INTERMITTENT_CLUSTER_AVAIL,2,...
D,DEMAND,INTERMITTENT_CLUSTER_AVAIL,2,...

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: DEMAND_FORECASTS