Storage Fleet Duty Mirror
Corrected edition · 25 September 2026. Source observation: 24 September 2026. Wording and source-date clarification; reported metrics unchanged.
GB public storage instruction records · observation date 2026-09-24
30 complete UTC days: 2026-08-25 to 2026-09-23 inclusive. The endpoint 2026-09-24 is excluded. Public records may later be revised; this card retains the dated snapshot.
Distributions cover only the high-confidence tier of identifiers selected by LFR storage classification v0.1 from the Elexon BM Unit register retrieved on 12 June 2026 at 12:16:53 UTC, with at least one recorded acceptance in this window. Both conditions are required: battery-related names AND declared import/export capacities differing by less than 20% of generation capacity. Pumped storage and interconnectors are excluded; the medium and low classification tiers are not included. This historical selection is not a current census or confirmation of physical battery identity. Identifiers without acceptance records are outside these distributions.
| Measure | p25 | Median | p95 | Valid n |
|---|---|---|---|---|
| Accepted BM actions / dayRecorded acceptances divided by 30 days; action granularity can change with market rules. | 36.5 | 54.7 | 100.5 | 560 excluded |
| Acceptance net-ramp reversals / dayChanges between successive nonzero acceptance ramp directions; not charging cycles or charge/discharge crossings. | 7.3 | 10.4 | 21.4 | 560 excluded |
| Instructed trajectory area / MW / dayMWh / MW / day; absolute-endpoint area approximation divided by positive frozen capacity and 30 days. Not metered delivery. | 0.56 | 1.35 | 3.13 | 560 excluded |
Percentiles use linear interpolation of the stored table values. Each displayed row has at least five valid identifiers. No individual points or maxima are shown; aggregation is not a guarantee against every inference about a public population.
Capacity is the larger of absolute declared demand capacity and declared generation capacity in that same 12 June 2026 Elexon register, rounded to one decimal MW in the retained table. It is not current usable capacity; registry changes since that retrieval do not update this denominator. Energy normalisation has its own positive-capacity subset. Missing values are excluded, not counted as zero. Successive daily windows overlap; these bands do not establish a trend or an explanation.
Can describe: the distribution of accepted actions, acceptance ramp-sign changes and instructed trajectory area in this public record window.
Cannot establish: the full service stack, physical output, internal stress, health, degradation, safety, profitability or financing suitability.
To examine further: contact LFR using the details below for the method summary and scope of retained evidence before making a comparison.