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PDPASA_CONSTRAINTSOLUTION

PDPASA_CONSTRAINTSOLUTION shows binding and violated constraint results from the capacity evaluation, including the RHS value.

Column Schema

CONSTRAINTID

Constraint identifier (synonymous with GenConID)

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

This column is mandatory, and a primary key.

Examples:

  • #SSE_PPCCGT_20
  • $CPP_4
  • C_V_GPWFWST_462
  • I_6F_NS_150
  • I_6F_SN_150
  • N::Q_BWMP_LDTW
  • N::Q_BWMP_TNT
  • N>94T_947_72
  • N>>NIL_39
  • N>>NIL_4

INTERVAL_DATETIME

The unique identifier for the interval within this study

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

This column is mandatory, and a primary key.

Example: 2026/09/01 00:30:00

RUN_DATETIME

Unique Timestamp Identifier for this study

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

This column is mandatory, and a primary key.

Example: 2026/09/01 00:30:00

RUNTYPE

Type of run. Values are OUTAGE_LRC and LOR. Note that the PDPASA OUTAGE_LRC Run Type is discontinued from 31 July 2025, with only the LOR Run Type reported.

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

This column is mandatory, and a primary key.

Example: LOR

STUDYREGIONID

Primary Region for LP Solve (or MARKET if none).

SQL Type: VARCHAR2(20) Polars Type: str

This column is mandatory, and a primary key.

Examples:

  • NSW1
  • QLD1
  • SA1
  • TAS1
  • VIC1

CAPACITYMARGINALVALUE

Capacity adequacy assessment marginal value, 0 if not binding

SQL Type: NUMBER(12,2) Polars Type: pl.Float64

This column is not mandatory.

Example: 1

CAPACITYRHS

The RHS value in the capacity evaluation.

SQL Type: NUMBER(12,2) Polars Type: pl.Float64

This column is not mandatory.

Examples: -77.07, 76.63, 0, 5051

CAPACITYVIOLATIONDEGREE

Capacity adequacy assessment violation degree for generic constraint; 0 if not violating

SQL Type: NUMBER(12,2) Polars Type: pl.Float64

This column is not mandatory.

Example: 0

LASTCHANGED

Last changed date of this record

For more information, see the dedicated documentation page.

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

This column is not mandatory.

Example: 2026/09/01 00:04:51

New Data Timing

After each PDASA run (half-hourly)

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("INTERVAL_DATETIME", "RUN_DATETIME", "LASTCHANGED").str.strptime(
            pl.Datetime, dt_s_fmt
        ),
    )
    .cast(
        {
            "CONSTRAINTID": pl.Categorical,
            "RUNTYPE": pl.Categorical,
            "STUDYREGIONID": str,
            "CAPACITYMARGINALVALUE": pl.Float64,
            "CAPACITYRHS": pl.Float64,
            "CAPACITYVIOLATIONDEGREE": pl.Float64,
        }
    )
    # Deduplicate
    # We want one row per ['CONSTRAINTID', 'INTERVAL_DATETIME', 'RUN_DATETIME', 'RUNTYPE', 'STUDYREGIONID']
    # Tie-breaker: greatest value of LASTCHANGED
    .sort(LASTCHANGED, descending=False)
    .unique(
        subset=[
            "CONSTRAINTID",
            "INTERVAL_DATETIME",
            "RUN_DATETIME",
            "RUNTYPE",
            "STUDYREGIONID",
        ],
        keep="last",
    )
)

Nemosis

This table is not yet available in Nemosis.

Example File

From PUBLIC_ARCHIVE_PDPASA_CONSTRAINTSOLUTION_FILE01_202609010000.zip

RUN_DATETIMEINTERVAL_DATETIMECONSTRAINTIDCAPACITYRHSCAPACITYMARGINALVALUECAPACITYVIOLATIONDEGREELASTCHANGEDRUNTYPESTUDYREGIONID
2026/09/01 00:30:002026/09/01 00:30:00N::Q_BWMP_LDTW770.28102026/09/01 00:04:51LORQLD1
2026/09/01 00:30:002026/09/01 00:30:00N>>NIL_395511.54102026/09/01 00:04:51LORNSW1
2026/09/01 00:30:002026/09/01 00:30:00N>NIL_LSDU84.43102026/09/01 00:04:51LORQLD1
2026/09/01 00:30:002026/09/01 00:30:00N^^N_NIL_WGLT631.06102026/09/01 00:04:51LORNSW1
2026/09/01 00:30:002026/09/01 00:30:00N^^N_NIL_WGLT631.06102026/09/01 00:04:51LORQLD1
2026/09/01 00:30:002026/09/01 00:30:00N_NIL_TE_B198102026/09/01 00:04:51LORNSW1
2026/09/01 00:30:002026/09/01 00:30:00Q>NIL_DRLCLB_NIL172.5102026/09/01 00:04:51LORNSW1
2026/09/01 00:30:002026/09/01 00:30:00Q>NIL_DRLCLB_NIL172.5102026/09/01 00:04:51LORQLD1
2026/09/01 00:30:002026/09/01 00:30:00Q>PWSP_PWSP_WOSP2378.63102026/09/01 00:04:51LORQLD1
2026/09/01 00:30:002026/09/01 00:30:00Q^^N_NIL_SRAR1292.48102026/09/01 00:04:51LORNSW1
2026/09/01 00:30:002026/09/01 00:30:00SVML_ZERO0102026/09/01 00:04:51LORNSW1
...

CSETP.WORLDDVD_PDPASA_CONSTRAINTSOLUTIONAEMOPUBLIC2026/10/0916:21:31001791526891011MONTHLY_ARCHIVE001791526891011
IPDPASACONSTRAINTSOLUTION1RUN_DATETIMEINTERVAL_DATETIMECONSTRAINTIDCAPACITYRHSCAPACITYMARGINALVALUECAPACITYVIOLATIONDEGREELASTCHANGEDRUNTYPESTUDYREGIONID
DPDPASACONSTRAINTSOLUTION12026/09/01 00:30:002026/09/01 00:30:00N::Q_BWMP_LDTW770.28102026/09/01 00:04:51LORQLD1
DPDPASACONSTRAINTSOLUTION12026/09/01 00:30:002026/09/01 00:30:00N>>NIL_395511.54102026/09/01 00:04:51LORNSW1
DPDPASACONSTRAINTSOLUTION12026/09/01 00:30:002026/09/01 00:30:00N>NIL_LSDU84.43102026/09/01 00:04:51LORQLD1
DPDPASACONSTRAINTSOLUTION12026/09/01 00:30:002026/09/01 00:30:00N^^N_NIL_WGLT631.06102026/09/01 00:04:51LORNSW1
DPDPASACONSTRAINTSOLUTION12026/09/01 00:30:002026/09/01 00:30:00N^^N_NIL_WGLT631.06102026/09/01 00:04:51LORQLD1
DPDPASACONSTRAINTSOLUTION12026/09/01 00:30:002026/09/01 00:30:00N_NIL_TE_B198102026/09/01 00:04:51LORNSW1
DPDPASACONSTRAINTSOLUTION12026/09/01 00:30:002026/09/01 00:30:00Q>NIL_DRLCLB_NIL172.5102026/09/01 00:04:51LORNSW1
DPDPASACONSTRAINTSOLUTION12026/09/01 00:30:002026/09/01 00:30:00Q>NIL_DRLCLB_NIL172.5102026/09/01 00:04:51LORQLD1
DPDPASACONSTRAINTSOLUTION12026/09/01 00:30:002026/09/01 00:30:00Q>PWSP_PWSP_WOSP2378.63102026/09/01 00:04:51LORQLD1
DPDPASACONSTRAINTSOLUTION12026/09/01 00:30:002026/09/01 00:30:00Q^^N_NIL_SRAR1292.48102026/09/01 00:04:51LORNSW1
DPDPASACONSTRAINTSOLUTION12026/09/01 00:30:002026/09/01 00:30:00SVML_ZERO0102026/09/01 00:04:51LORNSW1
...
CEND OF REPORT1003

RUN_DATETIME,INTERVAL_DATETIME,CONSTRAINTID,CAPACITYRHS,CAPACITYMARGINALVALUE,CAPACITYVIOLATIONDEGREE,LASTCHANGED,RUNTYPE,STUDYREGIONID
"2026/09/01 00:30:00","2026/09/01 00:30:00",N::Q_BWMP_LDTW,770.28,1,0,"2026/09/01 00:04:51",LOR,QLD1
"2026/09/01 00:30:00","2026/09/01 00:30:00",N>>NIL_39,5511.54,1,0,"2026/09/01 00:04:51",LOR,NSW1
"2026/09/01 00:30:00","2026/09/01 00:30:00",N>NIL_LSDU,84.43,1,0,"2026/09/01 00:04:51",LOR,QLD1
"2026/09/01 00:30:00","2026/09/01 00:30:00",N^^N_NIL_WGLT,631.06,1,0,"2026/09/01 00:04:51",LOR,NSW1
"2026/09/01 00:30:00","2026/09/01 00:30:00",N^^N_NIL_WGLT,631.06,1,0,"2026/09/01 00:04:51",LOR,QLD1
"2026/09/01 00:30:00","2026/09/01 00:30:00",N_NIL_TE_B,198,1,0,"2026/09/01 00:04:51",LOR,NSW1
"2026/09/01 00:30:00","2026/09/01 00:30:00",Q>NIL_DRLCLB_NIL,172.5,1,0,"2026/09/01 00:04:51",LOR,NSW1
"2026/09/01 00:30:00","2026/09/01 00:30:00",Q>NIL_DRLCLB_NIL,172.5,1,0,"2026/09/01 00:04:51",LOR,QLD1
"2026/09/01 00:30:00","2026/09/01 00:30:00",Q>PWSP_PWSP_WOSP,2378.63,1,0,"2026/09/01 00:04:51",LOR,QLD1
"2026/09/01 00:30:00","2026/09/01 00:30:00",Q^^N_NIL_SRAR,1292.48,1,0,"2026/09/01 00:04:51",LOR,NSW1
"2026/09/01 00:30:00","2026/09/01 00:30:00",SVML_ZERO,0,1,0,"2026/09/01 00:04:51",LOR,NSW1
...

C,SETP.WORLD,DVD_PDPASA_CONSTRAINTSOLUTION,AEMO,PUBLIC,2026/10/09,16:21:31,001791526891011,MONTHLY_ARCHIVE,001791526891011
I,PDPASA,CONSTRAINTSOLUTION,1,RUN_DATETIME,INTERVAL_DATETIME,CONSTRAINTID,CAPACITYRHS,CAPACITYMARGINALVALUE,CAPACITYVIOLATIONDEGREE,LASTCHANGED,RUNTYPE,STUDYREGIONID
D,PDPASA,CONSTRAINTSOLUTION,1,"2026/09/01 00:30:00","2026/09/01 00:30:00",N::Q_BWMP_LDTW,770.28,1,0,"2026/09/01 00:04:51",LOR,QLD1
D,PDPASA,CONSTRAINTSOLUTION,1,"2026/09/01 00:30:00","2026/09/01 00:30:00",N>>NIL_39,5511.54,1,0,"2026/09/01 00:04:51",LOR,NSW1
D,PDPASA,CONSTRAINTSOLUTION,1,"2026/09/01 00:30:00","2026/09/01 00:30:00",N>NIL_LSDU,84.43,1,0,"2026/09/01 00:04:51",LOR,QLD1
D,PDPASA,CONSTRAINTSOLUTION,1,"2026/09/01 00:30:00","2026/09/01 00:30:00",N^^N_NIL_WGLT,631.06,1,0,"2026/09/01 00:04:51",LOR,NSW1
D,PDPASA,CONSTRAINTSOLUTION,1,"2026/09/01 00:30:00","2026/09/01 00:30:00",N^^N_NIL_WGLT,631.06,1,0,"2026/09/01 00:04:51",LOR,QLD1
D,PDPASA,CONSTRAINTSOLUTION,1,"2026/09/01 00:30:00","2026/09/01 00:30:00",N_NIL_TE_B,198,1,0,"2026/09/01 00:04:51",LOR,NSW1
D,PDPASA,CONSTRAINTSOLUTION,1,"2026/09/01 00:30:00","2026/09/01 00:30:00",Q>NIL_DRLCLB_NIL,172.5,1,0,"2026/09/01 00:04:51",LOR,NSW1
D,PDPASA,CONSTRAINTSOLUTION,1,"2026/09/01 00:30:00","2026/09/01 00:30:00",Q>NIL_DRLCLB_NIL,172.5,1,0,"2026/09/01 00:04:51",LOR,QLD1
D,PDPASA,CONSTRAINTSOLUTION,1,"2026/09/01 00:30:00","2026/09/01 00:30:00",Q>PWSP_PWSP_WOSP,2378.63,1,0,"2026/09/01 00:04:51",LOR,QLD1
D,PDPASA,CONSTRAINTSOLUTION,1,"2026/09/01 00:30:00","2026/09/01 00:30:00",Q^^N_NIL_SRAR,1292.48,1,0,"2026/09/01 00:04:51",LOR,NSW1
D,PDPASA,CONSTRAINTSOLUTION,1,"2026/09/01 00:30:00","2026/09/01 00:30:00",SVML_ZERO,0,1,0,"2026/09/01 00:04:51",LOR,NSW1
...
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 2 of 2021. 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 313 MB when zipped, 3 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
PDPASA CONSTRAINTSOLUTION 1

This means that the CSV files start with metadata columns:

I,PDPASA,CONSTRAINTSOLUTION,1,...
D,PDPASA,CONSTRAINTSOLUTION,1,...

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: PDPASA