Modification To Balancing And Settlement Code: Generator Planned Outage Information Sharing.pdf

The proposal, initially put forth by Dynegy UK Limited, sought to provide all BSC signatories with generator planned outage information.

Background:

- Operating Code 2 (OC2) of the Grid Code requires generators to submit planned outage and output usable data to National Grid Company plc (NGC).
- This data is crucial for NGC's operational planning, including matching generation output with demand and managing system constraints.
- While NGC provides generating plant demand margins to generators, the information is not publicly accessible, creating an asymmetry in market knowledge.

Proposal and Recommendations:

- Modification Proposal P22 suggested publishing Output Usable and Generator Planned Outage data on the Balancing Mechanism Reporting Service (BMRS).
- The Modification Group explored aggregation options for data publication: non-aggregated by genset, by NGC zones, by BMRS zones, or a national level.
- They developed an Alternative Modification, focusing on addressing the generator-non-generator asymmetry by publishing Output Usable data at both NGC zone and national levels.
- The Authority agreed with the Panel's recommendation to reject the original proposal and approve the alternative modification.

Decision and Direction:

- The Authority's decision is based on balancing market transparency and ensuring NGC adheres to its licence conditions.
- They direct NGC to modify the BSC as per the Alternative Modification Proposal P22, specifically regarding Output Usable data publication at both NGC zone and national levels.