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BILLSMELTERRATE

BILLSMELTERRATE is standing data, setting out the rates used in smelter reduction calculations.

Deprecation Warning

This table is in the HISTORICAL TABLES package, so is likely deprecated.

BILLSMELTERRATE is public data, and is available to all participants.

Source

BILLSMELTERRATE updates infrequently, when inserting new annual rates.

Volume

Two records inserted per year

Column Schema

CONTRACTYEAR

AEMO Contract Year number starting in week containing 1st January

SQL Type: NUMBER(22,0) Polars Type: pl.UInt128

This column is mandatory, and a primary key.

Examples: 1998, 2021

EFFECTIVEDATE

Calendar settlement date record becomes effective

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

This column is mandatory, and a primary key.

Example: 1998/07/01 00:00:00

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

VERSIONNO

Version no of the record for the given effective date

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

This column is mandatory, and a primary key.

Examples: 1, 2

AUTHORISEDBY

Who authorised

SQL Type: VARCHAR2(10) Polars Type: str

This column is not mandatory.

Examples:

  • HAMISH
  • JWORMALD
  • LLITTLEMOR
  • SBUGGY
  • SCOTT
  • SRAJU
  • WING

AUTHORISEDDATE

Authorised date

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

This column is not mandatory.

Example: 1998/03/29 00:00:00

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

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: 2002/01/10 17:47:07

RAR1

Smelter rate 1

SQL Type: NUMBER(6,2) Polars Type: pl.Float64

This column is not mandatory.

Examples: 0, 2

RAR2

Smelter rate 2

SQL Type: NUMBER(6,2) Polars Type: pl.Float64

This column is not mandatory.

Examples: 2.08, 0, 2.45

New Data Timing

Infrequently, when inserting new annual rates

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", "AUTHORISEDDATE").str.strptime(pl.Date, d_fmt),
    )
    .cast(
        {
            "CONTRACTYEAR": int,  # or pl.UInt128
            "EFFECTIVEDATE": pl.Date(),
            "VERSIONNO": int,  # or pl.UInt16
            "AUTHORISEDBY": str,
            "AUTHORISEDDATE": pl.Date(),
            "RAR1": pl.Float64,
            "RAR2": pl.Float64,
        }
    )
    # Deduplicate
    # We want one row per ['CONTRACTYEAR', 'EFFECTIVEDATE', 'VERSIONNO']
    # Tie-breaker: greatest value of ['LASTCHANGED']
    .sort(["LASTCHANGED"], descending=False)
    .unique(subset=["CONTRACTYEAR", "EFFECTIVEDATE", "VERSIONNO"], keep="last")
)

Nemosis

This table is not yet available in Nemosis.

Example File

From PUBLIC_DVD_BILLSMELTERRATE_202407010000.zip

EFFECTIVEDATEVERSIONNOCONTRACTYEARRAR1RAR2AUTHORISEDDATEAUTHORISEDBYLASTCHANGED
1998/07/01 00:00:002199822.081998/07/01 00:00:00WING2004/06/22 17:02:17
1999/07/01 00:00:001199922.11999/06/15 00:00:00JWORMALD2004/06/22 17:02:17
2000/01/01 00:00:001200022.11999/11/16 00:00:00SBUGGY2004/06/22 17:02:17
1999/07/01 00:00:001200022.11998/03/29 00:00:00SCOTT2004/06/22 17:02:17
2000/07/01 00:00:001200022.172000/06/02 00:00:00WING2004/06/22 17:02:17
2000/12/31 00:00:001200122.172000/12/08 00:00:00JWORMALD2004/06/22 17:02:17
2001/07/01 00:00:001200122.32001/06/01 00:00:00JWORMALD2004/06/22 17:02:17
2001/12/30 00:00:001200222.32002/01/10 00:00:00JWORMALD2002/01/10 17:47:07
2003/12/28 00:00:001200422.452003/12/18 00:00:00JWORMALD2004/06/22 17:02:17
2002/07/01 00:00:001200222.372002/06/06 00:00:00JWORMALD2002/06/06 16:13:54
2002/12/29 00:00:001200322.372002/12/30 00:00:00SBUGGY2002/12/30 07:24:35
...

CSETP.WORLDDVD_BILLSMELTERRATEAEMOPUBLIC2024/08/0616:15:0100000004286538960000000428653863
IBILLING_CONFIGBILLSMELTERRATE1EFFECTIVEDATEVERSIONNOCONTRACTYEARRAR1RAR2AUTHORISEDDATEAUTHORISEDBYLASTCHANGED
DBILLING_CONFIGBILLSMELTERRATE11998/07/01 00:00:002199822.081998/07/01 00:00:00WING2004/06/22 17:02:17
DBILLING_CONFIGBILLSMELTERRATE11999/07/01 00:00:001199922.11999/06/15 00:00:00JWORMALD2004/06/22 17:02:17
DBILLING_CONFIGBILLSMELTERRATE12000/01/01 00:00:001200022.11999/11/16 00:00:00SBUGGY2004/06/22 17:02:17
DBILLING_CONFIGBILLSMELTERRATE11999/07/01 00:00:001200022.11998/03/29 00:00:00SCOTT2004/06/22 17:02:17
DBILLING_CONFIGBILLSMELTERRATE12000/07/01 00:00:001200022.172000/06/02 00:00:00WING2004/06/22 17:02:17
DBILLING_CONFIGBILLSMELTERRATE12000/12/31 00:00:001200122.172000/12/08 00:00:00JWORMALD2004/06/22 17:02:17
DBILLING_CONFIGBILLSMELTERRATE12001/07/01 00:00:001200122.32001/06/01 00:00:00JWORMALD2004/06/22 17:02:17
DBILLING_CONFIGBILLSMELTERRATE12001/12/30 00:00:001200222.32002/01/10 00:00:00JWORMALD2002/01/10 17:47:07
DBILLING_CONFIGBILLSMELTERRATE12003/12/28 00:00:001200422.452003/12/18 00:00:00JWORMALD2004/06/22 17:02:17
DBILLING_CONFIGBILLSMELTERRATE12002/07/01 00:00:001200222.372002/06/06 00:00:00JWORMALD2002/06/06 16:13:54
DBILLING_CONFIGBILLSMELTERRATE12002/12/29 00:00:001200322.372002/12/30 00:00:00SBUGGY2002/12/30 07:24:35
...
CEND OF REPORT34

EFFECTIVEDATE,VERSIONNO,CONTRACTYEAR,RAR1,RAR2,AUTHORISEDDATE,AUTHORISEDBY,LASTCHANGED
"1998/07/01 00:00:00",2,1998,2,2.08,"1998/07/01 00:00:00",WING,"2004/06/22 17:02:17"
"1999/07/01 00:00:00",1,1999,2,2.1,"1999/06/15 00:00:00",JWORMALD,"2004/06/22 17:02:17"
"2000/01/01 00:00:00",1,2000,2,2.1,"1999/11/16 00:00:00",SBUGGY,"2004/06/22 17:02:17"
"1999/07/01 00:00:00",1,2000,2,2.1,"1998/03/29 00:00:00",SCOTT,"2004/06/22 17:02:17"
"2000/07/01 00:00:00",1,2000,2,2.17,"2000/06/02 00:00:00",WING,"2004/06/22 17:02:17"
"2000/12/31 00:00:00",1,2001,2,2.17,"2000/12/08 00:00:00",JWORMALD,"2004/06/22 17:02:17"
"2001/07/01 00:00:00",1,2001,2,2.3,"2001/06/01 00:00:00",JWORMALD,"2004/06/22 17:02:17"
"2001/12/30 00:00:00",1,2002,2,2.3,"2002/01/10 00:00:00",JWORMALD,"2002/01/10 17:47:07"
"2003/12/28 00:00:00",1,2004,2,2.45,"2003/12/18 00:00:00",JWORMALD,"2004/06/22 17:02:17"
"2002/07/01 00:00:00",1,2002,2,2.37,"2002/06/06 00:00:00",JWORMALD,"2002/06/06 16:13:54"
"2002/12/29 00:00:00",1,2003,2,2.37,"2002/12/30 00:00:00",SBUGGY,"2002/12/30 07:24:35"
...

C,SETP.WORLD,DVD_BILLSMELTERRATE,AEMO,PUBLIC,2024/08/06,16:15:01,0000000428653896,,0000000428653863
I,BILLING_CONFIG,BILLSMELTERRATE,1,EFFECTIVEDATE,VERSIONNO,CONTRACTYEAR,RAR1,RAR2,AUTHORISEDDATE,AUTHORISEDBY,LASTCHANGED
D,BILLING_CONFIG,BILLSMELTERRATE,1,"1998/07/01 00:00:00",2,1998,2,2.08,"1998/07/01 00:00:00",WING,"2004/06/22 17:02:17"
D,BILLING_CONFIG,BILLSMELTERRATE,1,"1999/07/01 00:00:00",1,1999,2,2.1,"1999/06/15 00:00:00",JWORMALD,"2004/06/22 17:02:17"
D,BILLING_CONFIG,BILLSMELTERRATE,1,"2000/01/01 00:00:00",1,2000,2,2.1,"1999/11/16 00:00:00",SBUGGY,"2004/06/22 17:02:17"
D,BILLING_CONFIG,BILLSMELTERRATE,1,"1999/07/01 00:00:00",1,2000,2,2.1,"1998/03/29 00:00:00",SCOTT,"2004/06/22 17:02:17"
D,BILLING_CONFIG,BILLSMELTERRATE,1,"2000/07/01 00:00:00",1,2000,2,2.17,"2000/06/02 00:00:00",WING,"2004/06/22 17:02:17"
D,BILLING_CONFIG,BILLSMELTERRATE,1,"2000/12/31 00:00:00",1,2001,2,2.17,"2000/12/08 00:00:00",JWORMALD,"2004/06/22 17:02:17"
D,BILLING_CONFIG,BILLSMELTERRATE,1,"2001/07/01 00:00:00",1,2001,2,2.3,"2001/06/01 00:00:00",JWORMALD,"2004/06/22 17:02:17"
D,BILLING_CONFIG,BILLSMELTERRATE,1,"2001/12/30 00:00:00",1,2002,2,2.3,"2002/01/10 00:00:00",JWORMALD,"2002/01/10 17:47:07"
D,BILLING_CONFIG,BILLSMELTERRATE,1,"2003/12/28 00:00:00",1,2004,2,2.45,"2003/12/18 00:00:00",JWORMALD,"2004/06/22 17:02:17"
D,BILLING_CONFIG,BILLSMELTERRATE,1,"2002/07/01 00:00:00",1,2002,2,2.37,"2002/06/06 00:00:00",JWORMALD,"2002/06/06 16:13:54"
D,BILLING_CONFIG,BILLSMELTERRATE,1,"2002/12/29 00:00:00",1,2003,2,2.37,"2002/12/30 00:00:00",SBUGGY,"2002/12/30 07:24:35"
...
C,"END OF REPORT",34

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 7 of 2024.

Every month in between has a file. (No gaps.)

Data Size

Each year of data is approximately 11 KB when zipped, 106 KB as unzipped CSV.

Deduplication and PDR Loader Configuration

The primary keys are:

PDR Loader configuration is:

Report Name Report Subtype Version Undisclosed
BILLING_CONFIG BILLSMELTERRATE 1 ⚠️

Warning

Some of these file mappings are not in the published PDR Loader configuration file, even though files for this table exist with those metadata values. Mappings marked with ⚠️ have been added by me after manually inspecting those files.

This means that the CSV files start with metadata columns:

I,BILLING_CONFIG,BILLSMELTERRATE,1,...
D,BILLING_CONFIG,BILLSMELTERRATE,1,...

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: HISTORICAL TABLES