{"package":"HISTORICAL TABLES","documentation_urls":["https://nemweb.com.au/Reports/Current/MMSDataModelReport/Electricity/ElectricityDataModelReport_files/Elec64.htm#401"],"comment":"DELTAMW sets out the Frequency Control Ancillary Services (FCAS) requirement to be provided locally within each region and each half-hour period in a market day. Two fields specify Frequency Controlled Ancillary Services requirements to be provided locally for the new regulation ancillary services.","description":"Change Notice 324 (for the FCAS Constraint enhancements project) means\nthat Dispatch no longer utilises the static FCAS requirements defined in\nthe DELTAMW and RESERVE tables. These tables are replaced with\nconstraint data as a source of FCAS requirements.\n\nThe name of the table derives from the now obsolete delta MW for\nparticipant factors in Queensland.\n\nSource\n\nDELTAMW updates result from action by operational control staff,\ngenerally once a day.\n\nNot in Use - discontinued 16/11/2003","unused":true,"primary_keys":["PERIODID","REGIONID","SETTLEMENTDATE","VERSIONNO"],"indexes":[["LASTCHANGED"]],"columns":{"PERIODID":{"sql_type":"NUMBER(2,0)","pl_type":"pl.Int8","mandatory":true,"comment":"Market trading interval from 1 to 48 starting at 04:30","is_integer":true,"num_int_bits":8},"REGIONID":{"sql_type":"VARCHAR2(10)","pl_type":"pl.Enum([\"QLD1\", \"VIC1\", \"TAS1\", \"NSW1\", \"SA1\", \"SNOWY1\"])","mandatory":true,"comment":"Differentiates this region from all other regions","examples":null,"enums":["QLD1","VIC1","TAS1","NSW1","SA1","SNOWY1"]},"SETTLEMENTDATE":{"sql_type":"DATE","pl_type":"pl.Datetime()","mandatory":true,"comment":"Market date starting at 04:30","examples":["2026/01/20 00:05:00"],"warnings":["Despite what the name suggests, this is a datetime, not a date."],"parse_csv_as_string":true,"is_s_datetime":true},"VERSIONNO":{"sql_type":"NUMBER(3,0)","pl_type":"pl.UInt16","mandatory":true,"comment":"Version No of record for this date","is_integer":true,"unsigned_int":true,"num_int_bits":16},"LASTCHANGED":{"sql_type":"DATE","pl_type":"pl.Datetime()","mandatory":false,"comment":"Last date and time record changed","examples":["2026/01/20 00:05:00"],"parse_csv_as_string":true,"is_s_datetime":true},"LOWER5MIN":{"sql_type":"NUMBER(6,0)","pl_type":"pl.Int32","mandatory":false,"comment":"Lower 5 min local share requirement","is_integer":true,"num_int_bits":32},"LOWER6SEC":{"sql_type":"NUMBER(6,0)","pl_type":"pl.Int32","mandatory":false,"comment":"Lower 6 sec local share requirement","is_integer":true,"num_int_bits":32},"LOWER60SEC":{"sql_type":"NUMBER(6,0)","pl_type":"pl.Int32","mandatory":false,"comment":"Lower 60 sec local share requirement","is_integer":true,"num_int_bits":32},"LOWERREG":{"sql_type":"NUMBER(6,0)","pl_type":"pl.Int32","mandatory":false,"comment":"Lower Regulation local share requirement","is_integer":true,"num_int_bits":32},"RAISE5MIN":{"sql_type":"NUMBER(6,0)","pl_type":"pl.Int32","mandatory":false,"comment":"Raise 5 minute local share requirement","is_integer":true,"num_int_bits":32},"RAISE6SEC":{"sql_type":"NUMBER(6,0)","pl_type":"pl.Int32","mandatory":false,"comment":"Raise 6 sec local share requirement","is_integer":true,"num_int_bits":32},"RAISE60SEC":{"sql_type":"NUMBER(6,0)","pl_type":"pl.Int32","mandatory":false,"comment":"Raise 60 sec local share requirement","is_integer":true,"num_int_bits":32},"RAISEREG":{"sql_type":"NUMBER(6,0)","pl_type":"pl.Int32","mandatory":false,"comment":"Raise Regulation local share requirement","is_integer":true,"num_int_bits":32},"DELTAMW":{"sql_type":"NUMBER(6,0)","pl_type":"pl.Int32","mandatory":false,"comment":"Not Used","unused":true,"is_integer":true,"num_int_bits":32}},"visibility":"Public","warnings":[{"msg":"1 second, 6 second, 5 minute, 60 second and regulation refer to types of [FCAS](../../guide/market_design.md#what-is-fcas) markets.","level":"tip"}],"trigger":"When there is an action by operational control staff"}