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Design and Standards
The MDM/R must integrate with various external systems – including smart meter technologies that may operate differently – to process smart meter data that is sent to it. Select from the files below to learn more about the standards, user interfaces and specifications that govern the MDM/R and how it is designed. The documents include technical interface specifications that detail how LDC systems should interact with MDM/R programs – or, what is required from an LDC to “interface” with it. A PDF that describes the format of MDM/R reports is also available.
Visitors are encouraged to review the Sample Reports and Files page to download specific sample files that are referenced in the MDM/R Technical Interface and Reports specifications. The sample files should be used in conjunction with both documents.
MDM/R Standards
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Validation, Estimation and Editing Standard Issue 4.3 (IESO_STD_0078) CLEAN
Issue 4.3 – January 16, 2013 The VEE Standards and Parameters that used to be part of the VEE Standard for the Ontario Smart Metering System is now included as an Appendix A for easier accessibility. Please open the appendix either through the link provided in the document or by clicking on the link here.
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Validation, Estimation and Editing Standard Issue 4.3 (IESO_STD_0078) REDLINE
Issue 4.3 – January 16, 2013 The VEE Standards and Parameters that used to be part of the VEE Standard for the Ontario Smart Metering System is now included as an Appendix A for easier accessibility. Please open the appendix either through the link provided in the document or by clicking on the link here.
- TOU Schedule and Calendar Manual Issue 5.0 (SME_MAN_0005)
- Validation, Estimation and Editing (VEE) Services Class Load Profiles VE07 / VE17 / VE27 / VE37
MDM/R Technical Interface Specifications
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MDM/R Technical Interface Specifications V3.5 (IESO_SPEC_9027) CLEAN
Issue 3.5, published March 20, 2012
Please review related Document Amendment: IMDC_SME_0105
This issue specifies business rules providing clarification of the Meter related history of relationships and parameters that must be provided for retroactive changes to an SDP to Meter Relationship. Updates to the XML file-based Billing Service Standard Interface Reply specification are provided for TOU and Periodic Calculative Reads Equality adjustment functionality to be deployed with EnergyIP Release 7.2. Integration specifications for the transmission of actual and estimated register readings to MDM/R Meter Read Interfaces are provided for all CMEP Meter Read Interfaces and the Elster XML Meter Read Interface. This update includes modification to the Trilliant Meter Read Interface specification to accept externally estimated register readings. Specifications are added for a new file-based manual interface for Crossed Meter Data Change Request/Response. Specifications for the Billing Cycle Schedule Interface to be retired with the deployment of EnergyIP Release 7.2 are removed.
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MDM/R Technical Interface Specifications V3.5 (IESO_SPEC_9027) REDLINE
Issue 3.5, published March 20, 2012
Please review related Document Amendment: IMDC_SME_0105
This issue specifies business rules providing clarification of the Meter related history of relationships and parameters that must be provided for retroactive changes to an SDP to Meter Relationship. Updates to the XML file-based Billing Service Standard Interface Reply specification are provided for TOU and Periodic Calculative Reads Equality adjustment functionality to be deployed with EnergyIP Release 7.2. Integration specifications for the transmission of actual and estimated register readings to MDM/R Meter Read Interfaces are provided for all CMEP Meter Read Interfaces and the Elster XML Meter Read Interface. This update includes modification to the Trilliant Meter Read Interface specification to accept externally estimated register readings. Specifications are added for a new file-based manual interface for Crossed Meter Data Change Request/Response. Specifications for the Billing Cycle Schedule Interface to be retired with the deployment of EnergyIP Release 7.2 are removed.
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MDM/R Reports Technical Specifications V3.1 (SME SPEC 0001) CLEAN
Issue 3.1, published January 30, 2012
Review Related Document Amendment: IMDC_SME_0103
This issue provides the reports technical specifications reflecting updates and clarifications resulting from initial operation of EnergyIP R7.0. Specifications for modified reports to be deployed with EnergyIP R7.2 include file-format changes for Report BR01: Billing Delivery Summary Report – Version 02 and Report BR04: Billing Delivery Detail Report – Version 01 as well as content updates for Report BR03: Re-Billing Report.
Also included in this update are planned timing changes for Reports DC01, DC02, DC03, DC04, DC06, DC07, DC08, VE01, VE02, and VE03. These reports will be re-scheduled to run later each morning.
Preliminary report specifications are added for new Report BR07: Billing Service Loader Exception Report, and modified Report IR08: Billing Request Detailed Exception Report – Version 01. These reports are intended to replace Report IR08 – Version 00 to address problems with this report experienced in Production. These preliminary specifications are under design review. -
MDM/R Reports Technical Specifications V3.1 (SME SPEC 0001) REDLINE
Issue 3.1, published January 30, 2012
Review Related Document Amendment: IMDC_SME_0103
This issue provides the reports technical specifications reflecting updates and clarifications resulting from initial operation of EnergyIP R7.0. Specifications for modified reports to be deployed with EnergyIP R7.2 include file-format changes for Report BR01: Billing Delivery Summary Report – Version 02 and Report BR04: Billing Delivery Detail Report – Version 01 as well as content updates for Report BR03: Re-Billing Report.
Also included in this update are planned timing changes for Reports DC01, DC02, DC03, DC04, DC06, DC07, DC08, VE01, VE02, and VE03. These reports will be re-scheduled to run later each morning.
Preliminary report specifications are added for new Report BR07: Billing Service Loader Exception Report, and modified Report IR08: Billing Request Detailed Exception Report – Version 01. These reports are intended to replace Report IR08 – Version 00 to address problems with this report experienced in Production. These preliminary specifications are under design review. -
EipReadsForBillingInterface2.xsd
The EnergyIP billing service standard interface elements are defined in the eMeter ‘EipReadsForBillingInterface2.xsd for multiple record types. The MDM/R deployment of this standard XML interface supports only the ‘RequestMessage’ and ‘ReplyMessage’ record types and will only process those elements and attributes as specified in Sections 2.4 and 2.5 of the MDM/R Technical Interface Specifications Version 3.3, dated 07 July 2011. This updated XSD adds attributes to the Reply <Quality> element that will be deployed with EnergyIP Release 7.2 SP7.
MDM/R Design
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MDM/R Detailed Design document (SME_DES_9001)
Issue 2.0, published September 2009
eMeter's MDM/R Detailed Design outlines the functions of its core EnergyIP application, which is at the heart of the MDM/R system. However, the MDM/R V1.0 Technical Interface and Reports Specifications, and Validation, Estimation and Editing (VEE) Standard files - which correspond with it -
should now be considered the prevailing documents for information about how the MDM/R functions.
- MDM/R Functional Specification
- Business Processes Supported by the MDM/R
- MDM/R Architecture
- MDM/R Service and Performance Levels Specifications

