Tariff Interoperability
We are seeking views on standardising how suppliers make tariff pricing data available to help support consumer-led flexibility.
The Smart Secure Electricity Systems programme has published a consultation on Tariff Interoperability (TI). Proposals for TI have been developed as part of the SSES Programme within the Department for Energy Security and Net Zero (DESNZ). This consultation is led by DESNZ in collaboration with the Retail Energy Code Company (RECCo).
The TI Arrangements will introduce an obligation on Electricity Suppliers to make pricing data available in a standardised format. This is an important government-led initiative which will make it easier for electricity customers to participate in consumer-led flexibility by automating how Energy Smart Appliances (ESAs) connect to price signals. This will enable consumers to save money on their electricity bills.
This consultation builds on the policy proposals in both the 2024 Delivering a Smart Secure Electricity System consultation and its government response, and is in the context of both the Clean Power 2030 Action Plan and Clean Flexibility Roadmap.
The initial phase of TI will be delivered by introducing changes to the Retail Energy Code (REC) and the Electricity Supplier Standard Licence Conditions (SLCs).
The consultation includes a letter inviting parties to provide views on a number of questions (Letter and Annex A), and policy overview (Annex B). In particular, RECCo and DESNZ are seeking your views on:
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Annex C: Draft Electricity Supply SLC changes
- including detail on obligations, exemptions, and derogations
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Annex D: Draft REC TI Arrangements Schedule
- with detail on governance, operations, and performance details of how tariff information will be made available
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Annex E: API Technical Specification & Energy Market Data Specification changes
- outlining the data items, market messages and API specification
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Annex F: REC Standards Definition Document redlines
- redline changes to the existing Standard Definition Document
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Annex G: Implementation Timeline
- detail of activities for the period from post-consultation to early 2027