Sonar

Welcome to SONAR

Following a full service review, launched at the Commercial Balancing Services Group, the BM Start-Up generic terms have been changed to reflect greater transparency, resulting in SONAR publishing additional information, including the BMU ids.

Together with the publication of BM Start Up instructions we are also publishing Advance Synchronisation instructions, to distinguish whether the instruction is BM Start Up or Advance Synchronisation, the details will include BPA information for BM Start Up and these fields will be blank if the instruction is an Advance Synchronisation (as cost is not incurred).

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Agree Time / Instruction Time Category Start Time / Earliest Sync Time End Time / Cancel Time Updated
Details 23/07/2026 08:04 Additional GT 23/07/2026 08:00 23/07/2026 23:00 23/07/2026 00:00:00 23/07/2026 08:04:00 COSO-1 23/07/2026 00:00:00 08:00 23/07/2026 00:00:00 23:00 350 60
Details 23/07/2026 17:35 Additional GT 23/07/2026 23:00 24/07/2026 22:00 23/07/2026 00:00:00 23/07/2026 17:35:00 HUMR-1 23/07/2026 00:00:00 23:00 24/07/2026 00:00:00 22:00 380 89
Details 23/07/2026 20:01 Additional GT 23/07/2026 21:00 25/07/2026 08:00 23/07/2026 00:00:00 24/07/2026 20:01:00 ROCK-1 23/07/2026 00:00:00 21:00 25/07/2026 00:00:00 08:00 390 59 24/07/2026 00:00:00 02:09
Details 24/07/2026 10:30 Additional GT 24/07/2026 10:30 25/07/2026 22:30 24/07/2026 00:00:00 24/07/2026 10:30:00 HUMR-1 24/07/2026 00:00:00 10:30 25/07/2026 00:00:00 22:30 380 89
Details 25/07/2026 19:20 Additional GT 25/07/2026 20:00 26/07/2026 01:00 25/07/2026 00:00:00 25/07/2026 19:20:00 HUMR-1 25/07/2026 00:00:00 20:00 26/07/2026 00:00:00 01:00 380 89
Details 25/07/2026 23:12 Additional GT 25/07/2026 23:10 26/07/2026 23:59 25/07/2026 00:00:00 25/07/2026 23:12:00 MRWD-1 25/07/2026 00:00:00 23:10 26/07/2026 00:00:00 23:59 260 89
Details 26/07/2026 16:25 Additional GT 26/07/2026 15:15 27/07/2026 22:30 26/07/2026 00:00:00 26/07/2026 16:25:00 HUMR-1 26/07/2026 00:00:00 15:15 27/07/2026 00:00:00 22:30 380 89
Details 27/07/2026 10:00 Additional GT 27/07/2026 10:00 27/07/2026 16:00 27/07/2026 00:00:00 27/07/2026 10:00:00 HUMR-1 27/07/2026 00:00:00 10:00 27/07/2026 00:00:00 16:00 370 80
Details 27/07/2026 10:00 Additional GT 27/07/2026 10:00 27/07/2026 22:30 27/07/2026 00:00:00 27/07/2026 10:00:00 HUMR-1 27/07/2026 00:00:00 10:00 27/07/2026 00:00:00 22:30 380 89
Details 27/07/2026 14:05 Additional GT 27/07/2026 23:00 28/07/2026 07:00 27/07/2026 00:00:00 27/07/2026 14:05:00 COSO-1 27/07/2026 00:00:00 23:00 28/07/2026 00:00:00 07:00 340 60
Details 27/07/2026 19:25 Active Power Reduction below Submitted SEL 27/07/2026 22:30 28/07/2026 17:47 27/07/2026 00:00:00 28/07/2026 19:25:00 MRWD-1 27/07/2026 00:00:00 22:30 28/07/2026 00:00:00 17:47 245 30 28/07/2026 00:00:00 10:03
Details 27/07/2026 22:30 Additional GT 27/07/2026 22:30 28/07/2026 06:30 27/07/2026 00:00:00 27/07/2026 22:30:00 HUMR-1 27/07/2026 00:00:00 22:30 28/07/2026 00:00:00 06:30 380 89
Details 27/07/2026 22:55 Additional GT 28/07/2026 06:30 28/07/2026 23:30 27/07/2026 00:00:00 27/07/2026 22:55:00 HUMR-1 28/07/2026 00:00:00 06:30 28/07/2026 00:00:00 23:30 380 89
Details 28/07/2026 11:07 Active Power Reduction below Submitted SEL 27/07/2026 23:07 28/07/2026 17:47 28/07/2026 00:00:00 28/07/2026 11:07:00 MRWD-1 27/07/2026 00:00:00 23:07 28/07/2026 00:00:00 17:47 260 89
Details 28/07/2026 11:13 Additional GT 28/07/2026 09:00 29/07/2026 09:00 28/07/2026 00:00:00 28/07/2026 11:13:00 HUMR-1 28/07/2026 00:00:00 09:00 29/07/2026 00:00:00 09:00 380 89
Details 28/07/2026 11:23 Additional GT 28/07/2026 09:00 29/07/2026 09:00 28/07/2026 00:00:00 28/07/2026 11:23:00 HUMR-1 28/07/2026 00:00:00 09:00 29/07/2026 00:00:00 09:00 380 89
Details 28/07/2026 15:30 Additional GT 28/07/2026 23:00 29/07/2026 07:00 28/07/2026 00:00:00 28/07/2026 15:30:00 COSO-1 28/07/2026 00:00:00 23:00 29/07/2026 00:00:00 07:00 340 60
Details 28/07/2026 15:50 Active Power Reduction below Submitted SEL 28/07/2026 00:01 29/07/2026 23:59 28/07/2026 00:00:00 28/07/2026 15:50:00 PEHE-1 28/07/2026 00:00:00 00:01 29/07/2026 00:00:00 23:59 507 30
Details 28/07/2026 15:50 Active Power Reduction below Submitted SEL 28/07/2026 00:01 29/07/2026 23:59 28/07/2026 00:00:00 28/07/2026 15:50:00 PEHE-1 28/07/2026 00:00:00 00:01 29/07/2026 00:00:00 23:59 253 30
Details 28/07/2026 19:38 Active Power Reduction below Submitted SEL 28/07/2026 22:03 29/07/2026 16:47 28/07/2026 00:00:00 28/07/2026 19:38:00 MRWD-1 28/07/2026 00:00:00 22:03 29/07/2026 00:00:00 16:47 245 30
Details 29/07/2026 00:49 Active Power Reduction below Submitted SEL 29/07/2026 01:59 29/07/2026 17:59 29/07/2026 00:00:00 29/07/2026 00:49:00 T_SPLN-1 29/07/2026 00:00:00 01:59 29/07/2026 00:00:00 17:59 165 55
Details 29/07/2026 00:40 Additional GT 29/07/2026 07:00 29/07/2026 22:00 29/07/2026 00:00:00 29/07/2026 00:40:00 HUMR-1 29/07/2026 00:00:00 07:00 29/07/2026 00:00:00 22:00 380 89
Details 29/07/2026 03:39 Additional GT 28/07/2026 03:30 29/07/2026 15:35 29/07/2026 00:00:00 29/07/2026 03:39:00 COSO-1 28/07/2026 00:00:00 03:30 29/07/2026 00:00:00 15:35 340 60
Details 29/07/2026 11:52 Additional GT 29/07/2026 11:00 31/07/2026 22:00 29/07/2026 00:00:00 29/07/2026 11:52:00 HUMR-1 29/07/2026 00:00:00 11:00 31/07/2026 00:00:00 22:00 380 89
Details 29/07/2026 16:52 Active Power Reduction below Submitted SEL 30/07/2026 00:00 30/07/2026 23:59 29/07/2026 00:00:00 29/07/2026 16:52:00 PEHE-1 30/07/2026 00:00:00 00:00 30/07/2026 00:00:00 23:59 507 30
Details 29/07/2026 18:07 Active Power Reduction below Submitted SEL 30/07/2026 00:00 30/07/2026 23:59 29/07/2026 00:00:00 29/07/2026 18:07:00 PEHE-1 30/07/2026 00:00:00 00:00 30/07/2026 00:00:00 23:59 253 30
Details 29/07/2026 20:24 Additional GT 29/07/2026 21:59 29/07/2026 22:24 29/07/2026 00:00:00 29/07/2026 20:24:00 MRWD-1 29/07/2026 00:00:00 21:59 29/07/2026 00:00:00 22:24 356 89
Details 29/07/2026 22:19 Active Power Reduction below Submitted SEL 29/07/2026 22:24 30/07/2026 07:00 29/07/2026 00:00:00 29/07/2026 22:19:00 MRWD-1 29/07/2026 00:00:00 22:24 30/07/2026 00:00:00 07:00 245 30
Details 30/07/2026 02:23 Additional GT 29/07/2026 22:00 30/07/2026 22:00 30/07/2026 00:00:00 30/07/2026 02:23:00 HUMR-1 29/07/2026 00:00:00 22:00 30/07/2026 00:00:00 22:00 420 89
Details 30/07/2026 02:43 Additional GT 30/07/2026 02:30 30/07/2026 16:27 30/07/2026 00:00:00 30/07/2026 02:43:00 SPLN-1 30/07/2026 00:00:00 02:30 30/07/2026 00:00:00 16:27 350 55
Details 30/07/2026 10:42 Additional GT 30/07/2026 10:00 30/07/2026 16:00 30/07/2026 00:00:00 30/07/2026 10:42:00 HUMR-1 30/07/2026 00:00:00 10:00 30/07/2026 00:00:00 16:00 275 80