Public Metering Identifiers and Aggregation Rules EMR Metering

Public Metering Identifiers and Aggregation Rules EMR Metering in the Capacity Market 30 March 2016 EMR Settlement Limited

Metering Information ■ A Capacity Provider must complete the Metering System Information table (see below) ■ This is to be completed for each CMU they are responsible for and for each Component making up those CMUs ■ The information provided will be used as the basis for aggregating Metered Volumes in the EMR Settlement System ■ The CMU ID is as specified in the Capacity Market Register ■ The CMU Component ID will consist of Unit# (where # starts at one and increments for each Component making up the CMU) 2 Metering Identifiers and Aggregation Rules

Metering Information ■ The effective date is the start date of the relevant Delivery Year ■ The Metered Entity Type will be one of three options: – BMU for all CVA Metering Systems – MPAN for the Supplier Settlement Metering Option – MSID_NON_BSC for Balancing Services and Bespoke Metering Options – BMUs being split will be treated as Bespoke (i. e. MSID_NON_BSC) ■ The Metered Entity ID will be: – The BMU ID for BMU Type – The MPAN for Supplier Settlement Metering Option – The identifier for the Metering System for MSID_NON_BSC 3 Metering Identifiers and Aggregation Rules

Metering Information ■ The multiplier will be: § 0. 00<x< 1. 00 for a shared demand BMU § +1. 00 for everything else (apart from non-CM generation that needs to be netted off, e. g. ineligible low carbon generation, then it would be -1. 00) § Auxiliary Load must be a proportion of a HH Metered Volume (e. g. a BMU) or separately Metered (i. e. a Bespoke Meter) ■ The Distributor ID is a four character reference to identify the Distributor of the Boundary Point Metering System – Only required for Bespoke or Balancing Services Metering Option 4 Metering Identifiers and Aggregation Rules

Metering Information ■ The Line Loss Factor Class (LLFC) ID is a three digit reference that identifies the Line Loss Factor (LLF) to be applied to Metered Volumes – Only required for Bespoke or Balancing Services Metering Option ■ The Boundary Point MPAN / MSID is the identifier for the Boundary Point Metering System – Only required for Bespoke or Balancing Services Metering Option – MSID is only relevant if CMU is embedded within a BMU connected to a Distribution System ■ The Balancing Services Contract ID is the reference identifier for any Component that has a Balancing Services agreement with National Grid 5 Metering Identifiers and Aggregation Rules

Metering System Identifiers: CVA/BMU ■ CVA Sites are always BM Units – The Metering System Identifier is a BMU ID – The Aggregation Rule will consist of BMU IDs – There can be multiple BMU IDs making up a CMU – Transmission connected BMU IDs begin with T_ and Distribution connected BMU IDs begin with E_ – A CMU can consist of T_ and E_ BMU IDs, for example if there is a Distribution connected Demand circuit – There can be a multiplier applied to Demand BMUs that are used by separate Generating Units – Any CMU that is splitting a BMU becomes a Bespoke Metering Configuration Solution and requires a Metered Entity Identifier 6 Metering Identifiers and Aggregation Rules

BM Unit Metering Systems ■ The following slides got through some examples ■ The line diagram below represents a typical Generating Station 275 k. V 17 k. V X BMU T_EFGH-1 Generating Unit demand for MU 1 Electricity BMU T_EFGH-D X Station Transformer Board 415 V MST 17 k. V 415 V X 17 k. V X MG 1 Metering Identifiers and Aggregation Rules 17 k. V MG 2 G 300 MW Other Station load (e. g. office supply) 7 X BMU T_EFGH-2 Generating MU 2 Unit demand for Electricity G 300 MW 415 V X

BM Unit Metering Systems ■ In the first example each Generating Unit is a CMU – CMU ID 1 is EFGH-1 (Generating Unit 1 T_EFGH-1) – CMU ID 2 is EFGH-2 (Generating Unit 2 T_EFGH-2) – The Demand BMU ID is T_EFGH-D ■ The same Demand BMU ID is used by multiple CMUs 8 Metering Identifiers and Aggregation Rules

BM Unit Metering Systems ■ In the second example the Generating Station is the CMU – CMU ID is EFGH-1 (Generating Unit 1 T_EFGH-1 & 2 T_EFGH-2) – The Demand BMU ID is T_EFGH-D ■ The Demand BMU ID is used by all Generating Units at the Generating Station 9 Metering Identifiers and Aggregation Rules

BM Unit Metering Systems ■ In this third example there is only one BMU Settlement Defined Meter Point (DMP) M Settlement Metering CM Meter Point 275 k. V BMU ID T_MNOP-1 17 k. V X Supply for Generating Unit demand for Electricity and other site demand 415 V 17 k. V G 10 Metering Identifiers and Aggregation Rules Supply for Generating Unit demand for electricity (‘parasitic load’) and site load accounted for in meter M. This meter is measuring the net Generation from the Generator.

Metering System Identifiers: SVA/MPAN ■ SVA Sites always have an MPAN – The core MPAN is a 13 digit number – An MPAN is unique to a Metering System and the direction of energy flow – One Metering System (i. e. one Meter) can have an Import MPAN for Active Energy Import and another MPAN for Active Energy Export – Components can just have an Import MPAN – We need to know what MPANs relate to each other (i. e. the Import MPAN related to the Export MPAN for the Metering System) ■ The following slides go through some examples 11 Metering Identifiers and Aggregation Rules

Supplier Settlement Metering Configuration Solution ■ One Component making up the CMU that has an Import and Export MPAN Settlement Defined Meter Point (DMP) M Settlement Metering CM Meter Point 33 k. V 11 k. V X Supply for Generating Unit demand for Electricity and other site demand 415 V 11 k. V G 12 Metering Identifiers and Aggregation Rules 1200012345678 (Active Import) 1200087654321 (Active Export) Supply for Generating Unit demand for electricity (‘parasitic load’) and site load accounted for in meter M. This meter is measuring the net Generation from the Generator.

Supplier Settlement Metering Configuration Solution ■ Two Components making up the CMU, each with an Import and Export MPAN CMU Component 1 CMU Component 2 Settlement Metering M 1 M 2 Settlement Metering 1200012345678 (Active Import) 1200087654321 (Active Export) Site A 33 k. V 11 k. V X 415 V 11 k. V G 13 33 k. V Metering Identifiers and Aggregation Rules X 415 V 11 k. V G 1200056781234 (Active Import) 1200043218765 (Active Export) Site B

Supplier Settlement Metering Configuration Solution ■ A Demand Side Response (DSR) CMU that only has an Import MPAN Settlement Defined Meter Point (DMP) CM Meter Point M Settlement Metering 33 k. V 11 k. V X 14 Metering Identifiers and Aggregation Rules 1200012345678 (Active Import)

Metering System Identifiers: Non-BSC ■ Balancing Services and Bespoke Sites always have a Metered Entity Identifier (MEID) – The ID is an up to 18 Alphanumeric character code and should be unique to a Metering System (and direction of energy if submitted separately) – One Metering System (i. e. one Meter) can have an Import MEID for Active Energy Import and another MEID for Active Energy Export – We need to know what MEIDs relate to each other (i. e. the Import MEID related to the Export MEID if submitted separately for the Metering System) – They will have a Boundary Point MPAN or MSID depending on whether the Boundary Point has been registered in SMRS (SVA) or CMRS (CVA) 15 Metering Identifiers and Aggregation Rules

Non-BSC Metering Configuration Solution ■ Capacity Market Register specifies Metering Option as Type C for Balancing Services or Type B for Bespoke – Metered Entity Identifier has to be agreed with EMRS and will be included in the header of the CSV file used to submit Metered Volumes – The Boundary Point MPAN or MSID has to be included to validate LLF – The Distributor ID can be identified from the first two digits of the Boundary Point MPAN – The Line Loss Factor Class ID can be identified from the bill of the Boundary Point Metering System – The Metered Volume can be submitted as a Net figure or separate for AI and AE, in which case two MEIDs would be needed 16 Metering Identifiers and Aggregation Rules

Non-BSC Metering Configuration Solution ■ The Distributor ID can be identified from the first two digits of the MPAN – Distributor Short code is first two digits of the MPAN 17 Metering Identifiers and Aggregation Rules

Non-BSC Metering Configuration Solution ■ So if the first two digits of the Boundary Point MPAN was 23 the Distributor ID would be YELG 18 Metering Identifiers and Aggregation Rules

Non-BSC Metering Configuration Solution ■ The Line Loss Factor Class (LLFC) ID can be identified from the bill of the Boundary Point Metering System ■ The Line Loss Factor Class ID in the example is 456 ■ The following slides go through some examples – In the example the MEID is made up of the CMU ID and the format of the file (i. e. Net, AI or AE) 19 Metering Identifiers and Aggregation Rules

Non-BSC Metering Configuration Solution ■ A Bespoke or Balancing Services Metering System submitted as Net Settlement Defined Meter Point (DMP) M Settlement Metering 1200012345678 (Active Import) 33 k. V 11 k. V X CM Meter Point CM Metering X X M 1 415 V 11 k. V Supply for Generating Unit demand for Electricity and other site demand 20 X Metering Identifiers and Aggregation Rules G Onsite Customer(s) Demand X Supply for Generating Unit demand for electricity (‘parasitic load’) and site load accounted for in meter M 1. This meter is measuring the net Generation from the Generator.

Non-BSC Metering Configuration Solution ■ Based on the same single line diagram: – A Bespoke or Balancing Services Metering System with Import and Export submitted separately 21 Metering Identifiers and Aggregation Rules

Non-BSC Metering Configuration Solution ■ Splitting a BMU makes the Metering System Bespoke – In the example only Generating Unit 1 is a CMU and requires an MEID 275 k. V 17 k. V X Generating Unit demand for Electricity 415 V BMU T_EFGH-1 MG 1 X Generating Unit demand for Electricity 17 k. V 300 MW Metering Identifiers and Aggregation Rules X 17 k. V G 22 MG 2 G 300 MW 415 V