{"generated_at":"2026-10-25T07:43:35.306Z","methodology":"https://solaranalytica.com/methodology","trust":{"product":{"productKey":"ssen-network-headroom","title":"SSEN network headroom","pillar":"Grid and delivery","route":"/ssen-headroom","description":"Frozen March 2026 SSEN network estimates with unknown observation period, separate MW/MVA and source constraints.","coverage":"SEPD/SHEPD licence areas; 998 infrastructure records, 28 retained fields; no feeder/postcode coverage or connection offer; observation period unknown","cadence":"By edition; no automatic collector","sourceLabel":"SSEN, Generation Availability and Network Capacity","sourceUrl":"https://data-api.ssen.co.uk/dataset/generation-availability-and-network-capacity","lifecycleClass":"edition","freshnessBasis":"source_check","parentProductKey":null,"operationalStatus":"delayed","currentVersion":"ssen-headroom-march-2026-20261024-v1","latestObservationDate":null,"latestReleaseDate":"2026-10-24","latestRetrievedAt":"2026-10-24T03:30:20.663+00:00","expectedNextAt":null,"sourceCheckedAt":"2026-10-24T03:30:20.663+00:00","sourceReleaseDate":null,"observationPeriodEnd":null,"lastMaterialReleaseAt":"2026-10-24T03:30:20.663+00:00","knownLimit":"Observation period unknown. March edition and 11 March resource modification are not demand measurement dates. Generation MW includes storage; demand MVA excludes battery demand. 99 GSP headrooms N/A, not zero. Source RAG/constraints and hierarchy retained; no pooled capacity or connection offer. Exact factors, source publication/revisions and historic glossary equivalence unknown.","dataConfidence":"Medium"},"freshness":{"methodVersion":"freshness-dependency-spine-v1","productKey":"ssen-network-headroom","freshness":{"basis":"source_check","basisLabel":"Source check","status":"complete","resolvedField":"sourceCheckedAt","resolvedValue":"2026-10-24T03:30:20.663+00:00","acceptedAlternatives":["sourceCheckedAt","latestRetrievedAt"],"expectedNextAt":null,"reason":"sourceCheckedAt satisfies the source_check date basis."},"dependencies":{"impact":"none","total":0,"current":0,"caution":0,"hold":0,"causes":[]},"boundary":"Freshness records which declared date satisfies the product's registered basis. Dependency causes describe upstream operational state. Neither establishes source correctness or a changed decision outcome."},"quality":{"declarationVersion":"quality-contract-v1","overallStatus":"context_only","comparabilityClass":"C","fitnessForUse":"Suitable for the named scope when used with the published vintage, confidence and known limit. It is not a substitute for project-specific diligence.","dimensions":[{"key":"institutional_environment","state":"documented","note":"SSEN, Generation Availability and Network Capacity is named as source; Solar Analytica owns the published transformation and limits.","label":"Institutional environment"},{"key":"relevance","state":"documented","note":"SEPD/SHEPD licence areas; 998 infrastructure records, 28 retained fields; no feeder/postcode coverage or connection offer; observation period unknown","label":"Relevance"},{"key":"accuracy_reliability","state":"documented","note":"Observation period unknown. March edition and 11 March resource modification are not demand measurement dates. Generation MW includes storage; demand MVA excludes battery demand. 99 GSP headrooms N/A, not zero. Source RAG/constraints and hierarchy retained; no pooled capacity or connection offer. Exact factors, source publication/revisions and historic glossary equivalence unknown.","label":"Accuracy and reliability"},{"key":"timeliness","state":"documented","note":"By edition; no automatic collector. No fixed publisher date is recorded; review is event-driven.","label":"Timeliness"},{"key":"accessibility","state":"documented","note":"Public landing page at /ssen-headroom; JSON trust metadata and catalogue metadata are open.","label":"Accessibility"},{"key":"interpretability","state":"documented","note":"Source, version, observation period, retrieval time, confidence and limitations are retained as separate fields.","label":"Interpretability"},{"key":"coherence","state":"documented","note":"Current edition ssen-headroom-march-2026-20261024-v1 is the newest release in the ledger (released 2026-10-24).","label":"Coherence"}]},"verification":{"receiptVersion":"trust-register-v1","checkKey":"publication-contract-completeness","checkType":"contract","status":"pass","observedResult":"All mandatory publication-contract fields are present.","checkedBy":"Solar Analytica automated contract check","boundary":"This receipt proves metadata completeness only. Independent source validation requires a separate recorded receipt."},"releaseReceipts":[],"nextCheck":{"status":"event_driven","value":"By edition; no automatic collector; no fixed publisher date."}},"product":{"productKey":"ssen-network-headroom","title":"SSEN network headroom","pillar":"Grid and delivery","route":"/ssen-headroom","description":"Frozen March 2026 SSEN network estimates with unknown observation period, separate MW/MVA and source constraints.","coverage":"SEPD/SHEPD licence areas; 998 infrastructure records, 28 retained fields; no feeder/postcode coverage or connection offer; observation period unknown","cadence":"By edition; no automatic collector","sourceLabel":"SSEN, Generation Availability and Network Capacity","sourceUrl":"https://data-api.ssen.co.uk/dataset/generation-availability-and-network-capacity","lifecycleClass":"edition","freshnessBasis":"source_check","parentProductKey":null,"operationalStatus":"delayed","currentVersion":"ssen-headroom-march-2026-20261024-v1","latestObservationDate":null,"latestReleaseDate":"2026-10-24","latestRetrievedAt":"2026-10-24T03:30:20.663+00:00","expectedNextAt":null,"sourceCheckedAt":"2026-10-24T03:30:20.663+00:00","sourceReleaseDate":null,"observationPeriodEnd":null,"lastMaterialReleaseAt":"2026-10-24T03:30:20.663+00:00","knownLimit":"Observation period unknown. March edition and 11 March resource modification are not demand measurement dates. Generation MW includes storage; demand MVA excludes battery demand. 99 GSP headrooms N/A, not zero. Source RAG/constraints and hierarchy retained; no pooled capacity or connection offer. Exact factors, source publication/revisions and historic glossary equivalence unknown.","dataConfidence":"Medium"},"releases":[{"id":"3704c07a-925f-4fd2-b2bb-96d663436c9f","productKey":"ssen-network-headroom","releaseVersion":"ssen-headroom-march-2026-20261024-v1","releaseDate":"2026-10-24","releaseStatus":"snapshot","releaseKind":"edition","rowCount":998,"changeCount":null,"changeSummary":"Initial frozen March 2026 SSEN infrastructure projection: 998 AssetID records and 28 fields. Unknown observation period; no historical comparison or connection offer.","metrics":{"BSP_records":80,"GSP_records":99,"N_A_to_zero":false,"attribution":"Source: Scottish and Southern Electricity Networks (SSEN), Generation Availability and Network Capacity, Headroom Dashboard Data - March 2026. CC BY 4.0.","demand_unit":"MVA","licence_url":"https://creativecommons.org/licenses/by/4.0/","SEPD_records":545,"SHEPD_records":453,"edition_label":"March 2026","modifications":"Solar Analytica selected 28 infrastructure fields, retained decimal values as strings and labelled missing headroom. No SSEN endorsement implied.","Primary_records":819,"demand_positive":502,"generation_unit":"MW","projected_fields":28,"raw_zero_retained":true,"observation_period":null,"collector_scheduled":false,"generation_positive":113,"capacity_aggregation":false,"demand_excludes_bess":true,"demand_reported_zero":397,"record_revision_dates":null,"infrastructure_records":998,"observation_period_end":null,"source_response_sha256":"75f04c20a9d8fc24eec7b7eb1f89f2534bd7dcb55964a10fd0f6fb488799a2dd","GSP_headroom_unavailable":99,"generation_reported_zero":786,"observation_period_start":null,"generation_includes_storage":true,"source_resource_modified_at":"2026-03-11T12:12:32.113749","different_direction_RAG_records":570,"historical_glossary_equivalence":null,"source_original_publication_date":null},"previousReleaseId":null,"pipelineRunId":null,"sourceCheckedAt":"2026-10-24T03:30:20.663+00:00","sourceReleaseDate":null,"observationPeriodEnd":null,"dataSource":"SSEN, Generation Availability and Network Capacity","dataVersion":"ssen-headroom-march-2026-20261024-v1","dataConfidence":"Medium","evidenceUrl":"https://data-api.ssen.co.uk/dataset/generation-availability-and-network-capacity","retrievedAt":"2026-10-24T03:30:20.663+00:00","createdAt":"2026-10-24T04:40:32.889209+00:00"}],"dependencies":[],"dependencyCauses":[],"receiptLineage":{"status":"matched","currentVersion":"ssen-headroom-march-2026-20261024-v1","resolution":"direct_exact_version","productReceiptCount":1,"matchedReceipt":{"receiptProductKey":"ssen-network-headroom","releaseVersion":"ssen-headroom-march-2026-20261024-v1","releaseDate":"2026-10-24","releaseStatus":"snapshot","releaseKind":"edition","pipelineRunId":null,"sourceCheckedAt":"2026-10-24T03:30:20.663+00:00","sourceReleaseDate":null,"observationPeriodEnd":null,"dataSource":"SSEN, Generation Availability and Network Capacity","dataVersion":"ssen-headroom-march-2026-20261024-v1","dataConfidence":"Medium","evidenceUrl":"https://data-api.ssen.co.uk/dataset/generation-availability-and-network-capacity","retrievedAt":"2026-10-24T03:30:20.663+00:00"},"matchedReceipts":[{"receiptProductKey":"ssen-network-headroom","releaseVersion":"ssen-headroom-march-2026-20261024-v1","releaseDate":"2026-10-24","releaseStatus":"snapshot","releaseKind":"edition","pipelineRunId":null,"sourceCheckedAt":"2026-10-24T03:30:20.663+00:00","sourceReleaseDate":null,"observationPeriodEnd":null,"dataSource":"SSEN, Generation Availability and Network Capacity","dataVersion":"ssen-headroom-march-2026-20261024-v1","dataConfidence":"Medium","evidenceUrl":"https://data-api.ssen.co.uk/dataset/generation-availability-and-network-capacity","retrievedAt":"2026-10-24T03:30:20.663+00:00"}],"latestProductReceipt":{"receiptProductKey":"ssen-network-headroom","releaseVersion":"ssen-headroom-march-2026-20261024-v1","releaseDate":"2026-10-24","releaseStatus":"snapshot","releaseKind":"edition","pipelineRunId":null,"sourceCheckedAt":"2026-10-24T03:30:20.663+00:00","sourceReleaseDate":null,"observationPeriodEnd":null,"dataSource":"SSEN, Generation Availability and Network Capacity","dataVersion":"ssen-headroom-march-2026-20261024-v1","dataConfidence":"Medium","evidenceUrl":"https://data-api.ssen.co.uk/dataset/generation-availability-and-network-capacity","retrievedAt":"2026-10-24T03:30:20.663+00:00"}},"live":true}