Supply records and accepted balancing actions in GB
Corrected edition · 25 September 2026. Source observation: 24 September 2026. Wording and source-date clarification; reported metrics unchanged.
BOALF window · [2026-08-25, 2026-09-24) (30 complete UTC days; last included date 2026-09-23)
GB · 2026-09-24 PUBLIC OBSERVATION system-level · zero named units
What this page is: a compact view of four relations already present in the registered daily claim set.
Supply, accepted actions and instructed energy remain different measures; the page does not turn them into one quantity.
Recorded supply
Transmission-level FUELHH supply shares, including interconnector imports and net pumping; solar and embedded generation are not included. The denominator is total recorded FUELHH supply, not BOALF actions.
FUELHH source-window label: 30d. Exact dates are not carried by this reading; it does not inherit the BOALF dates above.
Gas
23.8%
Wind
37.1%
Nuclear
16.6%
Interconnect
6.8%
Accepted-action records
Two measures for the same historical group selected by LFR storage classification v0.1 from the Elexon register retrieved on 12 June 2026 at 12:16:53 UTC. Both battery-related naming and declared import/export capacity symmetry are required for this high-confidence tier. This is not confirmation of physical battery identity or a current asset census.
Accepted-action count
29.1%
Instructed-trajectory energy
2.9%
Share of all accepted actions; share of all instructed-trajectory MWh. Different denominators and units: not additive, subtractable or interchangeable. Trajectory MWh is not settlement-metered delivery. This group is not a census of every GB battery asset.
Accepted-action count distribution
Accepted actions were distributed across the observed BM-unit population as follows.
Concentration-equivalent count (1/HHI)
186
BM-unit identifiers with accepted actions
538
The concentration-equivalent count is 1/HHI over identifier-level accepted-action shares, not a count of an identified subset. It does not establish ownership diversity, operational resilience or physical redundancy.
Public visibility boundary
Visible in this projection
Transmission-level supply categories.
Accepted-action count and instructed-trajectory energy under named public procedures.
Distribution across BM-unit identifiers in the accepted-action record.
Not established here
Individual asset delivery, BMS or SCADA state.
A complete identity census of GB battery assets.
Dispatch causality, condition, reliability, credit or future outcome.
Trace and lawful extension
The eight headline metrics reproduce the values in the dated source record. LFR retains the population, calculation, source window and limits for each headline metric. Dates and provenance identifiers are separate from these metrics. The method summary is available via the contact below.
This card copies registered claim values from the dated snapshot, whose aggregate-value audit records PASS under its declared procedures. That result does not certify every sentence or execution on other nights. The card is at whole-system level with zero named units. Headings are framing; numbers are observations. Freshness is declared per channel. It expresses no assurance and no opinion. It is not asset condition assessment, not dispatch causality, not underwriting or credit advice, and it offers no view of any future outcome. Whether these procedures are sufficient for any purpose is solely the reader's determination.