MP192 Extend Scheduled Services for SMETS1 Devices

Smart Energy Code (SEC) Appendix AD ‘DCC User Interface Specification’ (DUIS) defines the individual Service Reference Variants (SRVs) that are eligible for sending as Scheduled Services by Users.

SRV 4.3 ‘Read Instantaneous Prepay Values’ and SRV 4.4.3 ‘Retrieve Billing Calendar Triggered Billing Data Log’, can only be requested on an ‘On-Demand’ service basis or as a ‘Future Dated’ service. Eligible Users must send one of these SRVs to the DCC each time the associated data is required. These SRVs are not currently defined in the SEC as eligible for Scheduled Services so Users cannot use SRV 5.1 ‘Create Schedule’ to schedule SRVs 4.3 and 4.4.3 on a repeating frequency. With a Smart Metering Equipment Technical Specifications (SMETS) 2+ Device operating in prepayment mode, Users have access to the Prepayment Daily Read Log and can schedule daily retrieval of this data. There is no equivalent log in SMETS1 Devices.

Running these SRVs using either the ‘On-Demand’ or ‘Future-Dated’ service is not practicable or efficient for either the DCC or many Users.

The Proposed Solution is to change SRVs 4.3 and 4.4.3 so they can also be scheduled by Suppliers for SMETS1 Devices using SRV 5.1. As the scheduling capability for SRV 4.3 and SRV 4.4.3 will be applicable for SMETS1 only, the DCC will implement a new error code to notify this validation failure if a Supplier attempts to schedule for SMETS2+ Devices.

Large Suppliers
Small Suppliers
DCC

Appendix AD 'DCC User Interface Specification'