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SPDCONNECTIONPOINTCONSTRAINT

SPDCONNECTIONPOINTCONSTRAINT sets out details of connections point constraints issued in dispatch, predispatch and STPASA.

The addition of the BIDTYPE field to SPDCONNECTIONPOINTCONSTRAINT allows constraints to be applied to a dispatchable unit energy and/or Frequency Controlled Ancillary Services dispatch.

SPDCONNECTIONPOINTCONSTRAINTdata is public, so is available to all participants.

Source

SPDCONNECTIONPOINTCONSTRAINT updates whenever new connection point constraints are created.

Column Schema

BIDTYPE

Bid Type Identifier; one of (RAISE6SEC, RAISE60SEC, RAISE5MIN, LOWER6SEC, LOWER60SEC, LOWER5MIN, RAISEREG, LOWERREG)

The SQL type is VARCHAR2(12). This is actually a factor/enum, with values:

  • ENERGY

  • LOWERREG

  • LOWER60SEC

  • RAISE5MIN

  • LOWER5MIN

  • LOWER6SEC

  • RAISE60SEC

  • RAISE6SEC

  • RAISEREG

  • RAISE1SEC

  • LOWER1SEC

This column is mandatory, and a primary key.

CONNECTIONPOINTID

Connection Point Identifier

SQL Type: VARCHAR2(12) Polars Type: pl.Categorical

This column is mandatory, and a primary key.

Examples:

  • NAL11C
  • NBK11B
  • NBKB3B
  • NBKW1S
  • NBL21L
  • NBSF1L
  • NBSF2S
  • NCLS1C
  • NDNH1H
  • NDNS1D

EFFECTIVEDATE

Effective date of this record

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

This column is mandatory, and a primary key.

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

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

GENCONID

Generic Constraint Identifier

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

This column is mandatory, and a primary key.

Examples:

  • #DRYCGT1_D_E
  • #DRYCGT2_D_E
  • #R036713_001_RAMP_F
  • #R036713_001_RAMP_V
  • #R036714_001_RAMP_F
  • #R036714_001_RAMP_V
  • #R036715_001_RAMP_F
  • #R036715_001_RAMP_V
  • #R036715_002_RAMP_F
  • #R036715_002_RAMP_V

VERSIONNO

Version no of this record for the effective date

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

This column is mandatory, and a primary key.

Example: 1

FACTOR

Constraint factor

SQL Type: NUMBER(16,6) Polars Type: pl.Float64

This column is not mandatory.

Examples: -0.181, 0.158, 1, 0.996

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: 2026/09/01 02:06:54

New Data Timing

When a new connection point constraint is created

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("LASTCHANGED").str.strptime(pl.Datetime, dt_s_fmt),
        pl.col("EFFECTIVEDATE").str.strptime(pl.Date, d_fmt),
    )
    .cast(
        {
            "BIDTYPE": pl.Enum(
                [
                    "ENERGY",
                    "LOWERREG",
                    "LOWER60SEC",
                    "RAISE5MIN",
                    "LOWER5MIN",
                    "LOWER6SEC",
                    "RAISE60SEC",
                    "RAISE6SEC",
                    "RAISEREG",
                    "RAISE1SEC",
                    "LOWER1SEC",
                ]
            ),
            "CONNECTIONPOINTID": pl.Categorical,
            "EFFECTIVEDATE": pl.Date(),
            "GENCONID": pl.Categorical,
            "VERSIONNO": int,  # or pl.UInt16
            "FACTOR": pl.Float64,
        }
    )
    # Deduplicate
    # We want one row per ['BIDTYPE', 'CONNECTIONPOINTID', 'EFFECTIVEDATE', 'GENCONID', 'VERSIONNO']
    # Tie-breaker: greatest value of ['LASTCHANGED']
    .sort(["LASTCHANGED"], descending=False)
    .unique(
        subset=[
            "BIDTYPE",
            "CONNECTIONPOINTID",
            "EFFECTIVEDATE",
            "GENCONID",
            "VERSIONNO",
        ],
        keep="last",
    )
)

Nemosis

from nemosis import dynamic_data_compiler

df = dynamic_data_compiler(
    '2024/01/01 00:00:00',
    '2024/01/31 00:00:00',
    "SPDCONNECTIONPOINTCONSTRAINT",
    "data/"
)

Example File

From PUBLIC_ARCHIVE_SPDCONNECTIONPOINTCONSTRAINT_FILE01_202609010000.zip

CONNECTIONPOINTIDEFFECTIVEDATEVERSIONNOGENCONIDFACTORLASTCHANGEDBIDTYPE
QCBF1D2026/09/01 00:00:001#R036713_001_RAMP_F12026/09/01 02:06:54ENERGY
QCBR1C2026/09/01 00:00:001#R036713_001_RAMP_F12026/09/01 02:06:54ENERGY
QCBS1B2026/09/01 00:00:001#R036713_001_RAMP_F0.9122026/09/01 02:06:54ENERGY
QCND1C2026/09/01 00:00:001#R036713_001_RAMP_F12026/09/01 02:06:54ENERGY
QRMA72026/09/01 00:00:001#R036713_001_RAMP_F12026/09/01 02:06:54ENERGY
QRMA82026/09/01 00:00:001#R036713_001_RAMP_F12026/09/01 02:06:54ENERGY
QCBF1D2026/09/01 00:00:001#R036713_001_RAMP_V12026/09/01 02:06:54ENERGY
QCBR1C2026/09/01 00:00:001#R036713_001_RAMP_V12026/09/01 02:06:54ENERGY
QCBS1B2026/09/01 00:00:001#R036713_001_RAMP_V0.9122026/09/01 02:06:54ENERGY
QCND1C2026/09/01 00:00:001#R036713_001_RAMP_V12026/09/01 02:06:54ENERGY
QRMA72026/09/01 00:00:001#R036713_001_RAMP_V12026/09/01 02:06:54ENERGY
...

CSETP.WORLDDVD_SPDCONNECTIONPOINTCONSTRAINTAEMOPUBLIC2026/10/0916:33:58001791527638240MONTHLY_ARCHIVE001791527638240
ISPDCPCNULL2CONNECTIONPOINTIDEFFECTIVEDATEVERSIONNOGENCONIDFACTORLASTCHANGEDBIDTYPE
DSPDCPCNULL2QCBF1D2026/09/01 00:00:001#R036713_001_RAMP_F12026/09/01 02:06:54ENERGY
DSPDCPCNULL2QCBR1C2026/09/01 00:00:001#R036713_001_RAMP_F12026/09/01 02:06:54ENERGY
DSPDCPCNULL2QCBS1B2026/09/01 00:00:001#R036713_001_RAMP_F0.9122026/09/01 02:06:54ENERGY
DSPDCPCNULL2QCND1C2026/09/01 00:00:001#R036713_001_RAMP_F12026/09/01 02:06:54ENERGY
DSPDCPCNULL2QRMA72026/09/01 00:00:001#R036713_001_RAMP_F12026/09/01 02:06:54ENERGY
DSPDCPCNULL2QRMA82026/09/01 00:00:001#R036713_001_RAMP_F12026/09/01 02:06:54ENERGY
DSPDCPCNULL2QCBF1D2026/09/01 00:00:001#R036713_001_RAMP_V12026/09/01 02:06:54ENERGY
DSPDCPCNULL2QCBR1C2026/09/01 00:00:001#R036713_001_RAMP_V12026/09/01 02:06:54ENERGY
DSPDCPCNULL2QCBS1B2026/09/01 00:00:001#R036713_001_RAMP_V0.9122026/09/01 02:06:54ENERGY
DSPDCPCNULL2QCND1C2026/09/01 00:00:001#R036713_001_RAMP_V12026/09/01 02:06:54ENERGY
DSPDCPCNULL2QRMA72026/09/01 00:00:001#R036713_001_RAMP_V12026/09/01 02:06:54ENERGY
...
CEND OF REPORT1003

CONNECTIONPOINTID,EFFECTIVEDATE,VERSIONNO,GENCONID,FACTOR,LASTCHANGED,BIDTYPE
QCBF1D,"2026/09/01 00:00:00",1,#R036713_001_RAMP_F,1,"2026/09/01 02:06:54",ENERGY
QCBR1C,"2026/09/01 00:00:00",1,#R036713_001_RAMP_F,1,"2026/09/01 02:06:54",ENERGY
QCBS1B,"2026/09/01 00:00:00",1,#R036713_001_RAMP_F,0.912,"2026/09/01 02:06:54",ENERGY
QCND1C,"2026/09/01 00:00:00",1,#R036713_001_RAMP_F,1,"2026/09/01 02:06:54",ENERGY
QRMA7,"2026/09/01 00:00:00",1,#R036713_001_RAMP_F,1,"2026/09/01 02:06:54",ENERGY
QRMA8,"2026/09/01 00:00:00",1,#R036713_001_RAMP_F,1,"2026/09/01 02:06:54",ENERGY
QCBF1D,"2026/09/01 00:00:00",1,#R036713_001_RAMP_V,1,"2026/09/01 02:06:54",ENERGY
QCBR1C,"2026/09/01 00:00:00",1,#R036713_001_RAMP_V,1,"2026/09/01 02:06:54",ENERGY
QCBS1B,"2026/09/01 00:00:00",1,#R036713_001_RAMP_V,0.912,"2026/09/01 02:06:54",ENERGY
QCND1C,"2026/09/01 00:00:00",1,#R036713_001_RAMP_V,1,"2026/09/01 02:06:54",ENERGY
QRMA7,"2026/09/01 00:00:00",1,#R036713_001_RAMP_V,1,"2026/09/01 02:06:54",ENERGY
...

C,SETP.WORLD,DVD_SPDCONNECTIONPOINTCONSTRAINT,AEMO,PUBLIC,2026/10/09,16:33:58,001791527638240,MONTHLY_ARCHIVE,001791527638240
I,SPDCPC,NULL,2,CONNECTIONPOINTID,EFFECTIVEDATE,VERSIONNO,GENCONID,FACTOR,LASTCHANGED,BIDTYPE
D,SPDCPC,NULL,2,QCBF1D,"2026/09/01 00:00:00",1,#R036713_001_RAMP_F,1,"2026/09/01 02:06:54",ENERGY
D,SPDCPC,NULL,2,QCBR1C,"2026/09/01 00:00:00",1,#R036713_001_RAMP_F,1,"2026/09/01 02:06:54",ENERGY
D,SPDCPC,NULL,2,QCBS1B,"2026/09/01 00:00:00",1,#R036713_001_RAMP_F,0.912,"2026/09/01 02:06:54",ENERGY
D,SPDCPC,NULL,2,QCND1C,"2026/09/01 00:00:00",1,#R036713_001_RAMP_F,1,"2026/09/01 02:06:54",ENERGY
D,SPDCPC,NULL,2,QRMA7,"2026/09/01 00:00:00",1,#R036713_001_RAMP_F,1,"2026/09/01 02:06:54",ENERGY
D,SPDCPC,NULL,2,QRMA8,"2026/09/01 00:00:00",1,#R036713_001_RAMP_F,1,"2026/09/01 02:06:54",ENERGY
D,SPDCPC,NULL,2,QCBF1D,"2026/09/01 00:00:00",1,#R036713_001_RAMP_V,1,"2026/09/01 02:06:54",ENERGY
D,SPDCPC,NULL,2,QCBR1C,"2026/09/01 00:00:00",1,#R036713_001_RAMP_V,1,"2026/09/01 02:06:54",ENERGY
D,SPDCPC,NULL,2,QCBS1B,"2026/09/01 00:00:00",1,#R036713_001_RAMP_V,0.912,"2026/09/01 02:06:54",ENERGY
D,SPDCPC,NULL,2,QCND1C,"2026/09/01 00:00:00",1,#R036713_001_RAMP_V,1,"2026/09/01 02:06:54",ENERGY
D,SPDCPC,NULL,2,QRMA7,"2026/09/01 00:00:00",1,#R036713_001_RAMP_V,1,"2026/09/01 02:06:54",ENERGY
...
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 8 MB when zipped, 84 MB 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
SPDCPC NULL 2

This means that the CSV files start with metadata columns:

I,SPDCPC,NULL,2,...
D,SPDCPC,NULL,2,...

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: GENERIC_CONSTRAINT