Single Meter Supply Points Discussion Points for Workstream

Single Meter Supply Points Discussion Points for Workstream 0428 27 September 2012

Population of meter points by SPAQ band National SPAQ (k. Wh) MP Count 0 -73, 200 11, 455 73, 201 - 293, 000 28, 149 293, 001 - 732, 000 18, 237 732, 001 - 2, 196, 000 17, 661 2, 196, 001 - 5, 860, 000 7, 447 5, 860, 001 - 14, 650, 000 2, 649 14, 650, 001 - 29, 300, 000 885 29, 300, 001 - 58, 600, 000 390 >58, 600, 001 359 Total 87, 232 11, 455 13. 13% 46, 386 53. 18% 29, 391 66. 31% 33. 69% 100. 00% 2

Population of meter points by SPAQ band grouping size National 2 1) Multi meter sites with 'x' meter point reference numbers 2 MPRN 3 MPRN 4 MPRN 5 MPRN 6 MPRN 7 MPRN 8 MPRN 9, 510 1, 200 324 145 114 35 24 36 30 37 11, 455 73, 201 - 293, 000 19, 820 5, 022 1, 404 490 306 147 128 126 120 586 28, 149 293, 001 - 732, 000 8, 996 4, 083 2, 084 960 504 245 224 180 120 841 18, 237 732, 001 - 2, 196, 000 5, 168 3, 228 2, 300 1, 485 1, 110 756 632 360 330 2, 292 17, 661 2, 196, 001 - 5, 860, 000 1, 496 906 680 580 414 336 320 216 190 2, 309 7, 447 5, 860, 001 - 14, 650, 000 492 342 144 120 156 77 120 72 50 1, 076 2, 649 14, 650, 001 - 29, 300, 000 158 84 48 65 42 35 40 9 10 394 885 29, 300, 001 - 58, 600, 000 92 45 16 25 18 21 8 0 20 145 390 >58, 600, 001 134 72 44 25 0 7 8 36 0 33 359 45, 866 14, 982 7, 044 3, 895 2, 664 1, 659 1, 504 1, 035 870 7, 713 87, 232 SPAQ (k. Wh) 0 -73, 200 Total 10 MPRN >10 MPRN Total 3

Form of System Capacity Charge 4

Interesting points to note ¾ SP < 73, 200 k. Wh ¾ No interesting points of note!! ¾ All MPRNs keep the same capacity rate aggregated or disaggregated ¾ SP > 73, 200 k. Wh and < 293, 000 k. Wh ¾ Average increase 18% ¾ Largely due to capacity rate moving “up the step” ¾ Where Supply Points are EUC WAR banded – Meter Point SOQ has been calculated using the same EUC WAR but corresponding with the lower AQ ¾ SP > 293, 000 k. Wh and <732, 000 k. Wh ¾ Average low (1%) but wide range between -24% and +34% ¾ Largely due to move from a “WAR band” SOQ to EUC bands 1 & 2 ¾ Positives result from moving from High LF EUC bands to lower, default EUC bands - e. g. 42. 0% to 31. 3% ¾ Negatives result from a counter-positional move ¾ SP > 732, 000 k. Wh ¾ Average, across the entire bands – 25% increase ¾ All percentages based on a random sample 5

Bishop Stortford Mprn MPAQ SPAQ 1, 655, 014 Meter 480500 xx 195, 998 MDA 16 – 16 480487 xx 252, 930 MDA 16 – 16 480488 xx 111 G 4 – 6 480487 xx 252, 930 MDA 16 – 16 480489 xx 77, 348 U 6 R 5 – 212 480490 xx 76, 021 U 6 – 212 480489 xx 77, 348 U 6 R 5 – 212 480503 xx 269 8 C 125 – 800 480493 xx 121 G 4 – 6 480499 xx 87, 177 MDA 16 – 16 480498 xx 7, 653 G 4 – 6 480502 xx 434, 571 U 40 – 1412 480501 xx 311, 501 U 65 – 2296 480495 xx 1 U 6 R 5 – 212 480494 xx 21, 218 U 6 R 5 – 212 480496 xx 1 U 6 R 5 – 212 480497 xx 189, 651 MDA 25 – 25 6

Canada Life House SPAQ 1, 396, 057 Mprn MPAQ Meter 10279 xx 18, 042 U 6 - 212 10274 xx 15, 575 U 6 - 212 10275 xx 22, 138 U 16 – 565 10276 xx 16, 447 U 6 – 212 10283 xx 58, 430 U 40 – 1412 10278 xx 16, 063 U 6 – 212 10277 xx 18, 372 U 6 – 212 10282 xx 762, 990 7 M 125 – 7000 10284 xx 468, 000 11 M 125 - 11000 7

Proposed Phased Approach ¾ Immediately – no new configurations ¾ Phase 1: Within 3 months of implementation ¾ All aggregations with AQs up to 73, 200 k. Wh to be disaggregated ¾ Accounts for 11. 5 k supply points or 13% ¾ Phase 2: From 1 st April 2014 to 1 st July 2014 ¾ All aggregations with AQs above 73, 200 k. Wh & up to 732, 000 k. Wh to be disaggregated ¾ Accounts for 46 k supply points or 53% ¾ Phase 3: From 1 st April 2015 to 1 st July 2015 ¾ All aggregations with AQs above 732, 000 k. Wh to be disaggregated ¾ Accounts for remaining 29 k supply points or 36% 8