Retail Market Documentation
The Market Registration Code (MRC) sets out in detail for market participants how the retail electricity market operates. It is made up of multiple separate documents, each with their own unique title and number reference. The MRC baseline refers to the documents when standardised and issued at a specific point in time. In addition to the Retail Market Procedures there are Retail Market Guides, which are for reference only and are not part of the MRC.
Retail Market Procedures
- Market Registration Code (MRC) (PDF 450 KB)
- MP NI 1 - Change of Supplier Non-Interval Credit v3.2 (PDF 256 KB)
- MP NI 2 - Change of Supplier Interval v3.1 (PDF 196 KB)
- MP NI 3 Objections and Cancellations - v3.0 (PDF 179 KB)
- MP NI 4 Supplier of Last Resort - v3.1 (PDF 366 KB)
- MP NI 5 New Non-Interval Metered Connection - v3.1 (PDF 161 KB)
- MP NI 6 New Interval Metered Connection - v3.1 (PDF 159 KB)
- MP NI 7 - Generator Nominations v3.3
- MP NI 8 Changes to Connection Characteristics - v3.0 (PDF 124 KB)
- MP NI 9 - De-Energisation v3.0 (PDF 466 KB)
- MP NI 10 - Re-Energisation v3.0 (PDF 473 KB)
- MP NI 11 - Changes to Meter Configuration v3.1 (PDF 303 KB)
- MP NI 12 - Meter Problems and Damage, Enquiries and Complaints v3.1 (PDF 557 KB)
- MP NI 14 Readings Processing Non-Interval - v3.0 (PDF 235 KB)
- MP NI 15 - Data Processing Interval v3.0 (PDF 150 KB)
- MP NI 15a - Validation, Estimation and Substitution Rules for Interval Data v3.0
- MP NI 16 - Data Aggregation v3.3
- MP NI 17 - Adjustments to Consumption v3.1 (PDF 118 KB)
- MP NI 18 – Special Read v3.0 (PDF 248 KB)
- MP NI 20 - Change of SSAC and/or Supplier Unit v3.0 (PDF 119 KB)
- MP NI 24 Change to Customer Details - v3.0 (PDF 109 KB)
- MP NI 25 - Change of Legal Entity v3.2 (PDF 169 KB)
- MP NI 27 - New Grouped MPRN v3.0 (PDF 170 KB)
- MP NI 29 - Change of Supplier Grouped Unmetered v3.0 (PDF 173 KB)
- MP NI 31 - Unmetered Data Processing v3.0 (PDF 93 KB)
- MP NI 32 - Changes of Legal Entity Grouped Unmetered v3.0 (PDF 130 KB)
- MP NI 35 - Change of Metering - Non Interval to Interval v3.0 (PDF 226 KB)
- MP NI 36 - Change of Grouped MPRN v3.0 (PDF 121 KB)
- MP NI 37 - Change of Supplier keypad v3.2
- MP NI 38 - Fieldwork Appointments v3.0 (PDF 189 KB)
- MP NI 39 - NI Market Procedures - Glossary of Terms v3.1 (PDF 329 KB)
Market Entry Process
- MP NI 501 - Market Entry Process (MEP) v2.0 (PDF 299 KB)
- MP NI 502 - MEP Re-certification v1.4 (PDF 194 KB)
- MP NI 503 - MEP Removal of Certification v3.1 (PDF 132 KB)
- MP NI 504 - MEP Dispensations v1.0 (PDF 132 KB)
- MP NI 505 - MEP Disputes and Appeals v1.0 (PDF 150 KB)
- MP NI 506 - MEP Ability Testing Procedure v2.0 (PDF 283 KB)
- MP NI 507 - MEP Market Testing Procedure v2.0 (PDF 242 KB)
- MP NI 508 - MEP Certification Ability Tests v1.0 (PDF 84 KB)
- MP NI 509 - MEP Certification Market Tests v1.0 (PDF 65 KB)
Market Message Implementation Guides
- NIMMIG - Customer Data and Agreements Baseline v3.0 (PDF 292 KB)
- NIMMIG - Data Aggregation Baseline v3.0 (PDF219 KB)
- NIMMIG - Data Processing Baseline v3.0 (PDF 286 KB)
- NIMMIG - Meter Works Baseline v3.1
- NIMMIG - Meter Registration Baseline 3.3 (PDF 1.5 MB)
- NIMMIG - Common Data Segments Baseline v3.0 (PDF 146 KB)
- NIMMIG - Unmetered Baseline v3.0 (PDF 443 KB)
Retailer Code of Practice
MP NI 115 – DCN Code of Practice Final 8 Sep 2008 Final (this is a supplier document and is not published at their request)
Additional documents - Retail Market Guides
- MG NI 19 Terminate Connection v3.0 (PDF 99 KB)
- MG NI 22 Customer Data Requests v3.0 (PDF 148 KB)
- MG NI 23 Supplier Data Requests v3.0 (PDF 166 KB)
- MG NI 28 New Technical MPRN v3.0 (PDF 140 KB)
- MG NI 30 Change of Unmetered Inventory v3.0 (PDF 109 KB)
- MG NI 34 DUoS, Transaction and PSO Billing v3.3 (PDF 226 KB)
- MG NI 34a DUoS Business Specification v3.2 (PDF533 KB)
- MG NI 41 Fieldwork Types, Charges and Delivery Time Targets - v3.2 (PDF 402 KB)
NIE Networks Business Days Schedules