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Logical tier descriptive

EPC Certificate

opda:EpcCertificate

EPC Certificate

Summary

Energy Performance Certificate — DESNZ-governed authority-retrieved artefact. [Substance Kind (informational); UFO Substance Kind / PROV-O Entity]. Class-promoted per S008 Q4 three-criterion test: authority-retrieved provenance (DESNZ register); distinct lifecycle (10-year validity; supersession on re-assessment); distinct PII regime per ODR-0018 (address + owner-identifiable). Concept tier →

Attributes

This entity declares no module-local datatype properties. EPC-specific facets (current-energy-rating, potential-energy-rating, certificate URL etc.) are bound to overlay profiles; current-energy-rating is also bound on the Property side via Property.currentEnergyRating.

Relationships

This entity declares no module-local object properties. The class-promotion IC requires that each EPCCertificate carries prov:wasGeneratedBy to its issuing activity (typically a DESNZ register-issuance Activity).

Identity key

Identity key = prov:wasGeneratedBy to the issuing activity. The Activity carries the (DESNZ-certificate-number, assessment-timestamp) tuple that disambiguates EPCCertificate instances.

Constraints

  • EPCCertificate MUST carry prov:wasGeneratedBy to its issuing activity per ODR-0008 §Q4a three-criterion test (Violation, EPCCertificateIdentityKeyShape)

Derived attributes

None.

ER diagram

%%{init: {"theme": "base", "themeVariables": {"primaryColor": "#E1BEE7", "primaryTextColor": "#4A148C", "primaryBorderColor": "#6A1B9A", "lineColor": "#37474F"}}}%% erDiagram accTitle: EPCCertificate — Entity-Relationship Diagram accDescr: EPCCertificate — concerns a Property and carries PROV-O wasGeneratedBy to issuing DESNZ register-issuance Activity. EPCCertificate }o--|| Property : "concerns" EPCCertificate }o--|| Activity : "prov:wasGeneratedBy"

Lifecycle state-transition diagram

EPC certificates follow DESNZ-governed lifecycle — issued with a 10-year validity, optionally superseded by a re-assessment within the validity window, expired at the 10-year boundary.

%%{init: {"theme": "base", "themeVariables": {"primaryColor": "#E1BEE7", "primaryTextColor": "#4A148C", "primaryBorderColor": "#6A1B9A", "lineColor": "#37474F"}}}%% stateDiagram-v2 accTitle: EPCCertificate — Lifecycle State-Transition Diagram accDescr: EPCCertificate lifecycle — Issued by DESNZ Activity, valid for 10 years, optionally Superseded on re-assessment, Expired at end of validity. [*] --> Issued : DESNZ Activity issues certificate Issued --> Superseded : re-assessment within validity window Issued --> Expired : 10-year validity reached Superseded --> Expired : 10-year validity (of successor) Expired --> [*]

Source ODR + ADR

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