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Modification: P363

Simplifying the registration of new configurations of BM Units

Proposer: Green Frog Power

Current Phase: Assessment Procedure

Lead Analyst: Cal Lynn

Category: BM Units

Implementation Date: TBC


The non-standard Balancing Mechanism (BM) Unit application process is time-consuming for each site, requiring a lead time of 60 working days (WD) as opposed to the 30WD required for a standard BM Unit.

Improvements in design, cost efficiency and commercial opportunities for renewable and smaller scale generator technologies has led ELEXON to progress an increasing number of non-standard BM Unit applications. ELEXON believes the number will continue to increase after conducting a review of Metering Dispensations and non-standard BM Units, reporting its findings and recommendations to the Panel at its March 2017 Meeting (Panel 264/08 Review of Metering Dispensations and Non-Standard BM Units – Final Report).

At the Panel meeting (264/08), two recommendations were made to update the BSC to introduce new standard BM Unit configurations which reflect commonly used non-standard BM Unit configurations and to introduce a generic non-standard BM Unit process. Of the four non-confidential consultation responses we received to the review of Metering Dispensations and non-standard BM Units, three agreed with these recommendations and one made no comment.

This Modification seeks to simplify the registration of new configurations of BM Units, by amending BSC Section K.


P363 was raised on 7 December 2017. The Initial Written Assessment (IWA) will be presented to the BSC Panel on 14 December 2017.
The first workgroup is being planned for week beginning 5 February 2018 – we would welcome Workgroup members.


P363 - Proposal Form  [683.8 Kb]
Document Date: 7 December 2017