Method before interpretation
Every public record is a trace of a specific physical or institutional process. It is real, but only within the observational capability of the process that produced it.
Preserve before interpreting
Archive the source payload before analytical transformation, together with its URL, retrieval time, requested window, response status, file hash and source licence.
Register observational capability
For every channel, record what physical or institutional relation it projects, its temporal grain, publication lag, revision behaviour, identity key, and known blind spots.
Freeze definitions
Specify windows, unit mappings, normalisation, thresholds, and derived fields before reading the result.
Derive within the lens boundary
Calculate cadence, volume, diversity, gaps, declarations, metered presence, and cross-lens alignment without upgrading them into internal-condition claims.
Run cross-lens and maturity audits
Test whether another lens supports, limits or changes the reading; whether identity bridges are strong enough; and whether each source is mature for the stated evidence date.
Publish observation and non-claim together
Every public result carries its date, scope, method version, source basis, unresolved gaps, and what cannot be inferred.
Core source lenses
| Lens | What it can represent | Primary limitation |
|---|---|---|
| BOALF | Accepted BM action timing, direction, level, and visible cadence. | Not all physical operation or contracted services are visible in BM acceptances. |
| B1610 | Settlement-period metered volume and physical presence. | Lagged and temporally coarse; not an internal response curve. |
| MEL / MIL | Declared maximum export and import limits. | A declaration is not a direct measurement of physical condition or availability cause. |
| PN / FPN | Declared physical intention. | Requires precise identity and temporal alignment before delivery comparison. |
| EAC / service records | Potential contracted-service scope outside visible BM actions. | Contract award does not establish dispatch or delivery. |
| REMIT | Public disclosure of qualifying unavailability events. | No matched event does not prove full availability; cause and maintenance detail remain limited. |
| REPD / registries | Project identity, status, capacity, and geography context. | Periodic updates, naming differences, and project-to-BMU mapping can create lag or ambiguity. |
Source links, licences, and attribution are maintained on the Data Sources page.
From method to review
Public source records → source-capability register → time and identity alignment → recomputable observation → unresolved public residual → targeted owner-evidence request.
The method does not turn an unresolved residual into a verdict. It turns it into a bounded question and, where authorised, a specific evidence request. That is the whole path from this page to the paid review: Portfolio Status Sheet, Duty Trajectory Profile, Targeted Evidence Request Pack.
See how an evidence request is built Bring a question the record cannot answer