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NEGATIVE_RESIDUE

Shows the inputs provided to the Negative Residue Constraints in the Dispatch horizon

Column Schema

DIRECTIONAL_INTERCONNECTORID

Negative residue related direction interconnector id

SQL Type: VARCHAR2(30) Polars Type: str

This column is mandatory, and a primary key.

Examples:

  • NSW1_QLD1
  • NSW1_VIC1
  • QLD1_NSW1
  • SA1_VIC1
  • TAS1_VIC1
  • VIC1_NSW1
  • VIC1_SA1
  • VIC1_TAS1

NRM_DATETIME

The time that residue information is processed

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

This column is mandatory, and a primary key.

Example: 2026/08/31 23:55:24

SETTLEMENTDATE

Dispatch Interval

Warning

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

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

This column is mandatory, and a primary key.

Example: 2026/09/01 00:05:00

CUMUL_NEGRESIDUE_AMOUNT

Negative residue triggering amount

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

This column is not mandatory.

Examples: -0.14, 0, -33525.75

CUMUL_NEGRESIDUE_PREV_TI

Previous trading interval cumulative negative residue amount

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

This column is not mandatory.

Examples: -0.17, 0, -26187.44

DI_NOTBINDING_COUNT

Count of the number of DIs not binding by this constraint

SQL Type: NUMBER(2,0) Polars Type: pl.Int8

This column is not mandatory.

Example: 3

DI_VIOLATED_COUNT

Count of the number of DIs violated by this constraint

SQL Type: NUMBER(2,0) Polars Type: pl.Int8

This column is not mandatory.

Example: 0

EVENT_ACTIVATED_DI

The starting DI when NRM event is active

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

This column is not mandatory.

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

EVENT_DEACTIVATED_DI

The finishing DI when NRM event stops being active.

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

This column is not mandatory.

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

NEGRESIDUE_CURRENT_TI

Current trading interval negative residue amount

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

This column is not mandatory.

Examples: -0.14, 0, -14329, -20116.1

NEGRESIDUE_PD_NEXT_TI

The cumulative negative residue for the next trading interval (PD)

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

This column is not mandatory.

Examples: -0.33, 0, -4610, -5856.66

NRM_ACTIVATED_FLAG

Is 1 if negative residue process is on, else is 0

SQL Type: NUMBER(1,0) Polars Type: pl.Int8

This column is not mandatory.

Example: 0

NRM_LOOP_FLAG

NRM Loop Flag controls monitoring behaviour: 0 = Individual NRM monitoring suppressed (loop operational with aggregate IRSR >= 0) 1 = Individual NRM monitoring active (applies to: loop not operational, aggregate loop IRSR < 0, or non-loop interconnection) This flag is evaluated and set for ALL interconnections in each dispatch interval

SQL Type: NUMBER(1,0) Polars Type: pl.Boolean

This column is not mandatory.

NRMCONSTRAINT_BLOCKED_FLAG

1 if constraint is blocked, else 0

SQL Type: NUMBER(1,0) Polars Type: pl.Int8

This column is not mandatory.

PREDISPATCHSEQNO

Predispatch sequence number

SQL Type: VARCHAR2(20) Polars Type: str

This column is not mandatory.

Examples:

  • 2026083140
  • 2026090112

PRICE_REVISION

SubjectToReview, Indeterminate, Accepted or Rejected

SQL Type: VARCHAR2(30) Polars Type: str

This column is not mandatory.

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(
            "NRM_DATETIME",
            "SETTLEMENTDATE",
            "EVENT_ACTIVATED_DI",
            "EVENT_DEACTIVATED_DI",
        ).str.strptime(pl.Datetime, dt_s_fmt),
    )
    # Polars can't cast string straight to bool. Need to go via something else.
    .cast({"NRM_LOOP_FLAG": pl.UInt8})
    .cast(
        {
            "DIRECTIONAL_INTERCONNECTORID": str,
            "CUMUL_NEGRESIDUE_AMOUNT": pl.Float64,
            "CUMUL_NEGRESIDUE_PREV_TI": pl.Float64,
            "DI_NOTBINDING_COUNT": int,  # or pl.Int8
            "DI_VIOLATED_COUNT": int,  # or pl.Int8
            "NEGRESIDUE_CURRENT_TI": pl.Float64,
            "NEGRESIDUE_PD_NEXT_TI": pl.Float64,
            "NRM_ACTIVATED_FLAG": int,  # or pl.Int8
            "NRM_LOOP_FLAG": pl.Boolean,
            "NRMCONSTRAINT_BLOCKED_FLAG": int,  # or pl.Int8
            "PREDISPATCHSEQNO": str,
            "PRICE_REVISION": str,
        }
    )
    # Deduplicate
    # We want one row per ['DIRECTIONAL_INTERCONNECTORID', 'NRM_DATETIME', 'SETTLEMENTDATE']
    # Tie-breaker: greatest value of ['SETTLEMENTDATE', 'NRM_DATETIME', 'DIRECTIONAL_INTERCONNECTORID']
    .sort(
        ["SETTLEMENTDATE", "NRM_DATETIME", "DIRECTIONAL_INTERCONNECTORID"],
        descending=False,
    )
    .unique(
        subset=["DIRECTIONAL_INTERCONNECTORID", "NRM_DATETIME", "SETTLEMENTDATE"],
        keep="last",
    )
)

Nemosis

This table is not yet available in Nemosis.

Example File

From PUBLIC_ARCHIVE_NEGATIVE_RESIDUE_FILE01_202609010000.zip

SETTLEMENTDATENRM_DATETIMEDIRECTIONAL_INTERCONNECTORIDNRM_ACTIVATED_FLAGCUMUL_NEGRESIDUE_AMOUNTCUMUL_NEGRESIDUE_PREV_TINEGRESIDUE_CURRENT_TINEGRESIDUE_PD_NEXT_TIPRICE_REVISIONPREDISPATCHSEQNOEVENT_ACTIVATED_DIEVENT_DEACTIVATED_DIDI_NOTBINDING_COUNTDI_VIOLATED_COUNTNRMCONSTRAINT_BLOCKED_FLAGNRM_LOOP_FLAG
2026/09/01 00:05:002026/08/31 23:55:24NSW1_QLD100000202608314030
2026/09/01 00:05:002026/08/31 23:55:24NSW1_VIC100000202608314030
2026/09/01 00:05:002026/08/31 23:55:24QLD1_NSW100000202608314030
2026/09/01 00:05:002026/08/31 23:55:24SA1_VIC10-895.740-895.74-1034.61202608314030
2026/09/01 00:05:002026/08/31 23:55:24TAS1_VIC10-1778.280-1778.28-1984.23202608314030
2026/09/01 00:05:002026/08/31 23:55:24VIC1_NSW100000202608314030
2026/09/01 00:05:002026/08/31 23:55:24VIC1_SA100-2656.2100202608314030
2026/09/01 00:05:002026/08/31 23:55:24VIC1_TAS100000202608314030
2026/09/01 00:10:002026/09/01 00:00:17NSW1_QLD10000030
2026/09/01 00:10:002026/09/01 00:00:17NSW1_VIC10000030
2026/09/01 00:10:002026/09/01 00:00:17QLD1_NSW10000030
...

CSETP.WORLDDVD_NEGATIVE_RESIDUEAEMOPUBLIC2026/10/0915:56:01001791525361499MONTHLY_ARCHIVE001791525361499
IDISPATCHNEGATIVE_RESIDUE2SETTLEMENTDATENRM_DATETIMEDIRECTIONAL_INTERCONNECTORIDNRM_ACTIVATED_FLAGCUMUL_NEGRESIDUE_AMOUNTCUMUL_NEGRESIDUE_PREV_TINEGRESIDUE_CURRENT_TINEGRESIDUE_PD_NEXT_TIPRICE_REVISIONPREDISPATCHSEQNOEVENT_ACTIVATED_DIEVENT_DEACTIVATED_DIDI_NOTBINDING_COUNTDI_VIOLATED_COUNTNRMCONSTRAINT_BLOCKED_FLAGNRM_LOOP_FLAG
DDISPATCHNEGATIVE_RESIDUE22026/09/01 00:05:002026/08/31 23:55:24NSW1_QLD100000202608314030
DDISPATCHNEGATIVE_RESIDUE22026/09/01 00:05:002026/08/31 23:55:24NSW1_VIC100000202608314030
DDISPATCHNEGATIVE_RESIDUE22026/09/01 00:05:002026/08/31 23:55:24QLD1_NSW100000202608314030
DDISPATCHNEGATIVE_RESIDUE22026/09/01 00:05:002026/08/31 23:55:24SA1_VIC10-895.740-895.74-1034.61202608314030
DDISPATCHNEGATIVE_RESIDUE22026/09/01 00:05:002026/08/31 23:55:24TAS1_VIC10-1778.280-1778.28-1984.23202608314030
DDISPATCHNEGATIVE_RESIDUE22026/09/01 00:05:002026/08/31 23:55:24VIC1_NSW100000202608314030
DDISPATCHNEGATIVE_RESIDUE22026/09/01 00:05:002026/08/31 23:55:24VIC1_SA100-2656.2100202608314030
DDISPATCHNEGATIVE_RESIDUE22026/09/01 00:05:002026/08/31 23:55:24VIC1_TAS100000202608314030
DDISPATCHNEGATIVE_RESIDUE22026/09/01 00:10:002026/09/01 00:00:17NSW1_QLD10000030
DDISPATCHNEGATIVE_RESIDUE22026/09/01 00:10:002026/09/01 00:00:17NSW1_VIC10000030
DDISPATCHNEGATIVE_RESIDUE22026/09/01 00:10:002026/09/01 00:00:17QLD1_NSW10000030
...
CEND OF REPORT1003

SETTLEMENTDATE,NRM_DATETIME,DIRECTIONAL_INTERCONNECTORID,NRM_ACTIVATED_FLAG,CUMUL_NEGRESIDUE_AMOUNT,CUMUL_NEGRESIDUE_PREV_TI,NEGRESIDUE_CURRENT_TI,NEGRESIDUE_PD_NEXT_TI,PRICE_REVISION,PREDISPATCHSEQNO,EVENT_ACTIVATED_DI,EVENT_DEACTIVATED_DI,DI_NOTBINDING_COUNT,DI_VIOLATED_COUNT,NRMCONSTRAINT_BLOCKED_FLAG,NRM_LOOP_FLAG
"2026/09/01 00:05:00","2026/08/31 23:55:24",NSW1_QLD1,0,0,0,0,0,,2026083140,,,3,0,,
"2026/09/01 00:05:00","2026/08/31 23:55:24",NSW1_VIC1,0,0,0,0,0,,2026083140,,,3,0,,
"2026/09/01 00:05:00","2026/08/31 23:55:24",QLD1_NSW1,0,0,0,0,0,,2026083140,,,3,0,,
"2026/09/01 00:05:00","2026/08/31 23:55:24",SA1_VIC1,0,-895.74,0,-895.74,-1034.61,,2026083140,,,3,0,,
"2026/09/01 00:05:00","2026/08/31 23:55:24",TAS1_VIC1,0,-1778.28,0,-1778.28,-1984.23,,2026083140,,,3,0,,
"2026/09/01 00:05:00","2026/08/31 23:55:24",VIC1_NSW1,0,0,0,0,0,,2026083140,,,3,0,,
"2026/09/01 00:05:00","2026/08/31 23:55:24",VIC1_SA1,0,0,-2656.21,0,0,,2026083140,,,3,0,,
"2026/09/01 00:05:00","2026/08/31 23:55:24",VIC1_TAS1,0,0,0,0,0,,2026083140,,,3,0,,
"2026/09/01 00:10:00","2026/09/01 00:00:17",NSW1_QLD1,0,0,0,0,0,,,,,3,0,,
"2026/09/01 00:10:00","2026/09/01 00:00:17",NSW1_VIC1,0,0,0,0,0,,,,,3,0,,
"2026/09/01 00:10:00","2026/09/01 00:00:17",QLD1_NSW1,0,0,0,0,0,,,,,3,0,,
...

C,SETP.WORLD,DVD_NEGATIVE_RESIDUE,AEMO,PUBLIC,2026/10/09,15:56:01,001791525361499,MONTHLY_ARCHIVE,001791525361499
I,DISPATCH,NEGATIVE_RESIDUE,2,SETTLEMENTDATE,NRM_DATETIME,DIRECTIONAL_INTERCONNECTORID,NRM_ACTIVATED_FLAG,CUMUL_NEGRESIDUE_AMOUNT,CUMUL_NEGRESIDUE_PREV_TI,NEGRESIDUE_CURRENT_TI,NEGRESIDUE_PD_NEXT_TI,PRICE_REVISION,PREDISPATCHSEQNO,EVENT_ACTIVATED_DI,EVENT_DEACTIVATED_DI,DI_NOTBINDING_COUNT,DI_VIOLATED_COUNT,NRMCONSTRAINT_BLOCKED_FLAG,NRM_LOOP_FLAG
D,DISPATCH,NEGATIVE_RESIDUE,2,"2026/09/01 00:05:00","2026/08/31 23:55:24",NSW1_QLD1,0,0,0,0,0,,2026083140,,,3,0,,
D,DISPATCH,NEGATIVE_RESIDUE,2,"2026/09/01 00:05:00","2026/08/31 23:55:24",NSW1_VIC1,0,0,0,0,0,,2026083140,,,3,0,,
D,DISPATCH,NEGATIVE_RESIDUE,2,"2026/09/01 00:05:00","2026/08/31 23:55:24",QLD1_NSW1,0,0,0,0,0,,2026083140,,,3,0,,
D,DISPATCH,NEGATIVE_RESIDUE,2,"2026/09/01 00:05:00","2026/08/31 23:55:24",SA1_VIC1,0,-895.74,0,-895.74,-1034.61,,2026083140,,,3,0,,
D,DISPATCH,NEGATIVE_RESIDUE,2,"2026/09/01 00:05:00","2026/08/31 23:55:24",TAS1_VIC1,0,-1778.28,0,-1778.28,-1984.23,,2026083140,,,3,0,,
D,DISPATCH,NEGATIVE_RESIDUE,2,"2026/09/01 00:05:00","2026/08/31 23:55:24",VIC1_NSW1,0,0,0,0,0,,2026083140,,,3,0,,
D,DISPATCH,NEGATIVE_RESIDUE,2,"2026/09/01 00:05:00","2026/08/31 23:55:24",VIC1_SA1,0,0,-2656.21,0,0,,2026083140,,,3,0,,
D,DISPATCH,NEGATIVE_RESIDUE,2,"2026/09/01 00:05:00","2026/08/31 23:55:24",VIC1_TAS1,0,0,0,0,0,,2026083140,,,3,0,,
D,DISPATCH,NEGATIVE_RESIDUE,2,"2026/09/01 00:10:00","2026/09/01 00:00:17",NSW1_QLD1,0,0,0,0,0,,,,,3,0,,
D,DISPATCH,NEGATIVE_RESIDUE,2,"2026/09/01 00:10:00","2026/09/01 00:00:17",NSW1_VIC1,0,0,0,0,0,,,,,3,0,,
D,DISPATCH,NEGATIVE_RESIDUE,2,"2026/09/01 00:10:00","2026/09/01 00:00:17",QLD1_NSW1,0,0,0,0,0,,,,,3,0,,
...
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 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 5 MB when zipped, 48 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
DISPATCH NEGATIVE_RESIDUE 1
DISPATCH NEGATIVE_RESIDUE 2

This means that the CSV files start with metadata columns:

I,DISPATCH,NEGATIVE_RESIDUE,1,...
D,DISPATCH,NEGATIVE_RESIDUE,1,...

or

I,DISPATCH,NEGATIVE_RESIDUE,2,...
D,DISPATCH,NEGATIVE_RESIDUE,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: DISPATCH