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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 29/11/2025 11:07 Additional GT 29/11/2025 11:00 30/11/2025 23:59 29/11/2025 00:00:00 29/11/2025 11:07:00 SHBA-1 29/11/2025 00:00:00 11:00 30/11/2025 00:00:00 23:59 280 59
Details 01/12/2025 04:05 Additional GT 01/12/2025 05:00 01/12/2025 23:59 01/12/2025 00:00:00 01/12/2025 04:05:00 SHBA-1 01/12/2025 00:00:00 05:00 01/12/2025 00:00:00 23:59 280 59
Details 02/12/2025 12:38 Active Power Reduction below Submitted SEL 02/12/2025 15:00 02/12/2025 23:59 02/12/2025 00:00:00 02/12/2025 12:38:00 PEHE-1 02/12/2025 00:00:00 15:00 02/12/2025 00:00:00 23:59 507 30
Details 02/12/2025 12:38 Active Power Reduction below Submitted SEL 02/12/2025 15:00 02/12/2025 23:59 02/12/2025 00:00:00 02/12/2025 12:38:00 PEHE-1 02/12/2025 00:00:00 15:00 02/12/2025 00:00:00 23:59 253 30
Details 02/12/2025 21:31 Active Power Reduction below Submitted SEL 03/12/2025 00:00 03/12/2025 23:59 02/12/2025 00:00:00 02/12/2025 21:31:00 PEHE-1 03/12/2025 00:00:00 00:00 03/12/2025 00:00:00 23:59 253 30
Details 02/12/2025 21:30 Active Power Reduction below Submitted SEL 03/12/2025 00:00 03/12/2025 23:59 02/12/2025 00:00:00 02/12/2025 21:30:00 PEHE-1 03/12/2025 00:00:00 00:00 03/12/2025 00:00:00 23:59 507 30
Details 03/12/2025 14:30 Additional GT 03/12/2025 23:00 04/12/2025 05:00 03/12/2025 00:00:00 03/12/2025 14:30:00 PEHE-1 03/12/2025 00:00:00 23:00 04/12/2025 00:00:00 05:00 400 120
Details 04/12/2025 19:19 Active Power Reduction below Submitted SEL 05/12/2025 00:00 05/12/2025 23:59 04/12/2025 00:00:00 04/12/2025 19:19:00 PEHE-1 05/12/2025 00:00:00 00:00 05/12/2025 00:00:00 23:59 253 30
Details 04/12/2025 19:19 Active Power Reduction below Submitted SEL 05/12/2025 00:00 05/12/2025 23:59 04/12/2025 00:00:00 04/12/2025 19:19:00 PEHE-1 05/12/2025 00:00:00 00:00 05/12/2025 00:00:00 23:59 507 30
Details 05/12/2025 17:34 Additional GT 05/12/2025 20:59 05/12/2025 22:30 05/12/2025 00:00:00 05/12/2025 17:34:00 ROCK-1 05/12/2025 00:00:00 20:59 05/12/2025 00:00:00 22:30 390 59 05/12/2025 00:00:00 22:37
Details 05/12/2025 17:41 Additional GT 05/12/2025 23:00 06/12/2025 23:00 05/12/2025 00:00:00 05/12/2025 17:41:00 HUMR-1 05/12/2025 00:00:00 23:00 06/12/2025 00:00:00 23:00 400 89
Details 05/12/2025 17:41 Additional GT 05/12/2025 23:00 06/12/2025 23:00 05/12/2025 00:00:00 05/12/2025 17:41:00 HUMR-1 05/12/2025 00:00:00 23:00 06/12/2025 00:00:00 23:00 365 89

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