4 Enhancing Reserve Information
4.1 Goal
The Enhancing Reserve Information (ERI Enhancing Reserve Information. Improves transparency of energy availability across the National Electricity Market (NEM) enabling market participants to make more informed decisions about their own behaviour) project aims to improve the transparency of energy available across the National Electricity Market See Relevant Rules or Procedures (NEM). This enables participants to make more informed decisions.
The following changes are introduced:
- Publish the previous trading day Energy Rules Terms’s 5-minute data for batteries.
- Publish the daily Energy Rules Terms energy limits (total availability) for scheduled generators and bidirectional units (BDUs) that are not batteries.
- Publish the aggregated state of charge of batteries.
- For scheduled BDUs to provide the Maximum Storage Capacity PASA Availability, as described in clause 3.7.2(d)(1) of the National Electricity Rules and the NER glossary. value.
4.2 High-level changes
|
Function |
Description |
Reference |
|---|---|---|
|
APIs |
Detailed specifications and context for API development |
APIs |
|
EMMS Data Model v5.5 |
Updates to tables in the DISPATCH, P5MIN, PRE_DISPATCH, and PD7DAY tables. For more information, see EMMS Technical Specification – Data Model v5.5 – April 2025. |
|
|
Markets Portal |
Updates the Energy & FCAS web interface on the Markets Portal. |
|
4.3 Bidding service
Updates the validation message as follows:
Validation messages
|
Error code |
Error title |
New message |
|---|---|---|
|
NEM-BIDDING-VALIDATION-DAILYENERGYCONSTRAINTERROR |
Invalid DailyEnergyConstraint |
Daily energy constraint must be null or an integer not less than 0 and less than 24 X DUID MAXCAPACITY. The maximum capacity is a configurable value. |
In the Bidding web interface, the validation message appears as follows:
4.3.1 API validation
Request
{
"referenceId": "{{referenceId}}",
"comments": "{{comments}}",
"authorisedBy": "{{authorisedBy}}",
"energyBids": [
{
"tradingDate":"{{tradingDate}}",
"duid": "{{duid}}",
"dailyEnergyConstraint" : 1201,
"prices":[0,1,2,4,8,10,20,40,80,100],"energyPeriods":[
{"periodId":1,"rampUpRate":5,"rampDownRate":5,"pasaAvail":35,"maxAvail":35,"bandAvail":[0,0,0,0,0,0,0,0,0,50]}
,{"periodId":2,"rampUpRate":5,"rampDownRate":5,"pasaAvail":35,"maxAvail":35,"bandAvail":[0,0,0,0,0,0,0,0,0,50]}
,{"periodId":3,"rampUpRate":5,"rampDownRate":5,"pasaAvail":35,"maxAvail":35,"bandAvail":[0,0,0,0,0,0,0,0,0,50]}
………
………
………
,{"periodId":286,"rampUpRate":5,"rampDownRate":5,"pasaAvail":35,"maxAvail":35,"bandAvail":[0,0,0,0,0,0,0,0,0,50]}
,{"periodId":287,"rampUpRate":5,"rampDownRate":5,"pasaAvail":35,"maxAvail":35,"bandAvail":[0,0,0,0,0,0,0,0,0,50]}
,{"periodId":288,"rampUpRate":5,"rampDownRate":5,"pasaAvail":35,"maxAvail":35,"bandAvail":[0,0,0,0,0,0,0,0,0,50]}
]
}
],
"fcasBids": [],
"mnspBids": []
}Response
{
"transactionId": "{{transactionId}}",
"data": {
"participantId": {{participantId}},
"offerTimeStamp": "2024-11-01T10:01:35",
"transactionId": {{transactionId}},
"referenceId": "{{referenceId}}",
"comments": "{{comments}}",
"filename": "{{filename}}",
"authorisedBy": "{{authorisedBy}}",
"status": "CORRUPT",
"method": "API"
},
"errors": [
{
"code": "NEM-BIDDING-VALIDATION-DAILYENERGYCONSTRAINTERROR",
"source": "$..energyBids[?(@.duid == '{{duid}}' && @.tradingDate == '{{tradingdate}})].dailyEnergyConstraint",
"title": "Invalid DailyEnergyConstraint",
"detail": "Daily energy constraint must be null or an integer not less than 0 and less than 24 X DUID MaxCapacity."
}
],
"warnings": []
}4.4 NEM reports
The NEM Reports publish Energy Rules Terms the actual and calculated State of Charge.
For BDUs, the calculated State of Charge is published at a regional level.